RF 100 VARIABLE HELIX SoLId CARBIdE End MILLS - Guhring, Inc.

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∡ χ ≠ ∡ γ 

RF 100 VARIABLE HELIX 

Solid Carbide End Mills 

• Material-specific geometries 

• Roughing and finishing end mills 

• Inch and metric sizes

At Guhring, our mission is to provide customers with the means to take cost out of machining 

production components by improving machine process times and product quality. 

Guhring, Inc. is a subsidiary of Guehring oHG, headquartered in Albstadt, Germany. Globally, 

Guehring employs over 4,500 people. The Brookfield, WI manufacturing plant and corporate 

headquarters employs more than 250 people. Additional resources include our warehouse in 

Huntington Beach, CA, and a manufacturing facility in Detroit, MI. 

In order to better serve our customers’ needs, Guhring offers a full range of special tool design/ 

manufacturing capabilities in our USA manufacturing plants. Our engineers can take blueprint 

part concepts and design specialized tools in high speed steel, carbide and even PCD which 

combine multiple manufacturing operations and reduce production costs. Guhring has the 

capability to manufacture special drill, reamer, end mill and countersink tools; solid or coolant fed. 

Guhring also offers a full reconditioning service that can recondition special and standard 

drill points, end mills and reamers to their original specifications. In addition, Guhring’s 

reconditioning service can provide tool modifications such as end mill corner radius and 

chamfers quickly and accurately. 

Our coatings division offers superior PVD coatings for cutting tools and wear parts. Guhring 

offers traditional TiN, TiCN and TiAlN coatings, as well as high performance proprietary coatings 

such as FIREX ® , MolyGlide ® , Super-A TM , nano-FIREX ® and new nano-A TM coating. With coating 

chambers in both Wisconsin and Michigan, Guhring can provide quick turnaround and competitive 

pricing on all types of parts, even beyond cutting tools. 

2

RF 100 Variable Helix End Mill QUICK-FINDER - End Mill selection guide 

Slot-Milling 

Roughing 

Finishing 

Material 

Workpiece 

Conditions 

1 x d 

0.3 - 0.8 x d 

< 0.1 x d 

Good machining 

RF 100 A 


conditions 

(e.g. # 3077) page 21 

(e.g. # 3077) page 21 

RF 100 S/F 

Wrought Aluminum Alloys 

< 3% Si. 

Poor machining 

conditions 


(e.g. # 3077) page 21 


(e.g. # 3077) page 21 

(e.g. # 3115) page 23 


RF 100 F 


Aluminium 

> 3% - 12% Si 

Steel & Alloys < 30 HRC 

conditions 


(e.g. # 3078) page 13 

RF 100 VA/NF 

(e.g. # 3078) page 13 



(e.g.. # 3115) page 23 

Cast Iron < 200 HB 30 

conditions 

(e.g. # 3081) page 17 

(e.g. # 3081) page 17 


RF 100 U 


Steel & Alloys 

30-38 HRC 

Cast Iron > 200 HB 30 

Hardened Steel 

< 54 HRC 

conditions 


conditions 

(e.g. # 3113) page 7 

RF 100 U/HF 

(e.g. # 3082) page 11 

(e.g. # 3114) page 8 


(e.g. # 3082) page 11 


(e.g.. # 3115) page 23 


RF 100 VA 


Stainless Steels 

conditions 


(e.g. # 3080) page 15 


(e.g. # 3080) page 15 



(e.g. # 3631) page 23 

conditions 

(e.g. # 3081) page 17 

(e.g. # 3081) page 17 


RF 100 Ti 


Titanium & Nickel Alloys 

conditions 


(e.g. # 3876) page 19 


(e.g. # 3876) page 19 



(e.g.. # 3115) page 23 

conditions 

(e.g. # 3082) page 11 

(e.g. # 3082) page 11 

Poor machining conditions = low horsepower, small machine taper, long reach, 

non-stable setup, or difficult chip removal 

3

Guhring No. Index 

Index 

Guhring no. Description Surface 

Finish 

3077 RF 100 A standard length variable helix end mills for aluminum Bright 21 

3078 RF 100 F standard length variable helix end mills for materials < 30 HRC FIREX ® 13 

3079 RF 100 U standard length variable helix end mills, corner radius, for materials < 54 HRC FIREX ® 9 

3080 RF 100 VA standard length variable helix end mills for stainless steels nano-A TM 15 

3081 RF 100 VA/NF standard length variable helix roughing-finishing end mills for stainless steels nano-A TM 17 

3082 RF 100 U/HF standard length variable helix roughing-finishing end mills, for materials < 54 HRC FIREX ® 11 

3099 RF 100 U stub length variable helix end mills for materials < 54 HRC FIREX ® 7 

3100 RF 100 U standard length variable helix end mills for materials < 54 HRC FIREX ® 8 

3113 RF 100 U stub length variable helix end mills for materials < 54 HRC FIREX ® 7 

3114 RF 100 U standard length variable helix end mills for materials < 54 HRC FIREX ® 8 

3115 RF 100 SF standard length 6-flute variable helix end mills for materials < 54 HRC FIREX ® 23 

3202 RF 100 A standard length variable helix end mills for aluminum, metric Bright 21 

3366 RF 100 F standard length variable helix end mills, coolant through, for materials < 30 HRC, metric FIREX ® 13 

3627 RF 100 U long length variable helix end mills for materials < 54 HRC, metric FIREX ® 9 

3629 RF 100 F standard length variable helix end mills for materials < 30 HRC, metric FIREX ® 13 

3631 RF 100 SF standard length 6-flute variable helix end mills for materials < 54 HRC, metric FIREX ® 23 

3731 RF 100 U stub length variable helix end mills for materials < 54 HRC, metric FIREX ® 7 

3732 RF 100 U standard length variable helix end mills for materials < 54 HRC, metric FIREX ® 8 

3736 RF 100 U standard length variable helix end mills for materials < 54 HRC, metric FIREX ® 8 

3876 RF 100 Ti standard length variable helix end mills, corner radius, for titanium alloys Super-A TM 19 

Page 

RF-LINE 

Standard 

Tooth 

profile 

Shank style 

Helix 

angle 

Tool illustration Tool material Surface finish Diameter range Series Page 

RF 100 U variable helix end mills for materials < 54 HRC 

center cutting 

fract. N HA 35°/38° 

Solid 

carbide 

3/16 - 1” 3113 7 

fract. N HB 35°/38° 

Solid 

carbide 

3/8 - 1” 3099 7 

metric N HB 35°/38° 

Solid 

carbide 

6.00 - 20.00 3731 7 

fract. N HA 35°/38° 

Solid 

carbide 

3/16 - 1” 3114 8 

fract. N HB 35°/38° 

Solid 

carbide 

3/8 - 1” 3100 8 

metric N HA 35°/38° 

Solid 

carbide 

4.00 - 25.00 3736 8 

metric N HB 35°/38° 

Solid 

carbide 

4.00 - 25.00 3732 8 

fract. N HA/HB 35°/38° 

r 

Solid 

carbide 

1/4 - 1” 3079 9 

metric N HA 35°/38° 

Solid 

carbide 

10.00 - 25.00 3627 9 

bright Super-A FIREX ® nano-A l stocked in USA m stocked internationally 

4


Standard 

Tooth 

profile 

Shank style 

Helix 

angle 

Tool illustration Tool material Surface finish Diameter range Series Page 

RF 100 U/HF variable helix roughing-finishing end mills for materials < 54 HRC 

fine truncated profile, center cutting 

fract. HF HA/HB 30°/32° 

Solid 

carbide 

1/4 - 1” 3082 11 

Index 

RF 100 F variable helix end mills for materials < 30 HRC 


fract. NH HA/HB 40°/42° 

Solid 

carbide 

3/16 - 1” 3078 13 

metric NH HA 40°/42° 

Solid 

carbide 

4.00 - 20.00 3629 13 

metric NH HB 40°/42° 

RF 100 VA variable helix end mills for stainless steel 



Solid 

carbide 

Solid 

carbide 

6.00 - 20.00 3366 13 

3/16 - 1” 3080 15 

RF 100 VA/NF variable helix roughing finishing end mills for stainless steel 

coarse truncated profile, center cutting 

fract. NF HA/HB 36°/38° 

RF 100 Ti variable helix end mills for titanium and nickel alloys 

corner radius, center cutting 

r 


Solid 

carbide 

Solid 

carbide 

1/4 - 1” 3081 17 

1/4 - 1” 3876 19 

RF 100 A variable helix end mills for aluminum and cast aluminum < 22 HRC 


fract. W HA/HB 40°/42° 

Solid 

carbide 

3/16 - 1” 3077 21 

metric W HA 40°/42° 

RF 100 SF 6-flute variable end mills for materials < 54 HRC 


Solid 

carbide 

4.00 - 20.00 3202 21 

fract. NH HA 

44°/45° 

46° 

Solid 

carbide 

5/16 - 1” 3115 23 

metric NH HA 

44°/45° 

46° 

Solid 

carbide 

8.00 - 25.00 3631 23 

general purpose alloyed/unalloyed steels high tensile steels stainless steels cast materials Ti and Ni alloys Al and Al-alloys 

5


Variable helix end mills RF 100 U for materials < 54 HRC 


Guhring has developed the RF 100 end mill with variable 

helix angle primarily to prevent chattering and the so-called 

corkscrew effect (as found when withdrawing tools having 

a large helix angle). 

The RF 100 U is a universal design for a wide range of materials 

and applications. This design is an excellent choice for job 

shops and manufacturers who mill a variety of materials. 

The variable helix angle also offers the following additional 

advantages: 

• up to 60% higher in feed rates 

• longer tool life 

• increased drilling depths 

• vibration-free machining 

• suitable for roughing and finishing 

• increased surface finish quality 

• reduced cutter wandering 

Micro edge 

protection 

for longer 

tool life 

Ff in [N] Ff in [N] 

400 

300 

200 

38° 

100 

0 

35° 

400 RF 100 

300 

200 


0 

standard 4-flute 

0 0,5 1,0 1,5 2,0 

Linear milling section [mm] 

35° 

38° 

A cutting force comparison between a conventional type N and a RF 100 

variable helix end mill clearly shows the RF 100 end mill’s quieter and more 

stable machining characteristics. 

Material 

Application ranges 

H 

 

Hardness 



< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

< 54 HRC 






RF 100 SF 

optimal suitability limited suitability hard machining 

H 


6 

When ordering: EDP no. = Series + Order no., example: 3867 12.700


RF 100 U (universal) variable helix end mills for materials < 54 HRC 

Stub length 

Series 3113 3099 

Standard Guhring std. 

Tool material Solid carbide 

Surface finish 

Application 

Type N N 

d 2 

shank tolerance h6 h6 

Helix angle 35°/38° 35°/38° 

d 1 

tolerance h10 h10 

Techn. data page 25 25 

Series 3731 

Standard DIN 6527 K 



Application 

Type 

N 

d 2 

shank tolerance 

h6 

Helix angle 35°/38° 

d 1 

tolerance 

h10 

Techn. data page 25 

d2 

d1 

d2 

d1 


l 2 

l 2 

l 1 

l 1 

d1 d2 l1 l2 no. Order 

Availability 

fract. fract. fract. fract. flutes no. 

3/16 3/16 2 3/8 4 4.760 l 

1/4 1/4 2 1/2 4 6.350 l 

5/16 5/16 2 1/2 4 7.940 l 

3/8 3/8 2 5/8 4 9.520 l m 

1/2 1/2 2 1/2 5/8 4 12.700 l m 

5/8 5/8 3 3/4 4 15.870 l m 

3/4 3/4 3 1 4 19.050 l m 

1 1 3 1 4 25.400 l m 


Availability 

mm mm mm mm flutes no. 

6.000 6.000 54.00 10.00 4 6.000 m 

8.000 8.000 58.00 12.00 4 8.000 m 

10.000 10.000 66.00 14.00 4 10.000 m 

12.000 12.000 73.00 16.00 4 12.000 m 

14.000 14.000 75.00 18.00 4 14.000 m 

16.000 16.000 82.00 22.00 4 16.000 m 

18.000 18.000 84.00 24.00 4 18.000 m 

20.000 20.000 92.00 26.00 4 20.000 m 

All RF 100 end mills feature a corner chamfer for cutting edge protection. 

Please see the Technical Section of this brochure for details on the chamfer. 


When ordering: EDP no. = Series + Order no., example: 3867 12.700 

7



Standard length 

Series 3114 3100 




Application 

Type N N 

d 2 


Helix angle 35°/38° 35°/38° 

d 1 



Series 3736 3732 

Standard DIN 6527 L 



Application 

Type N N 

d 2 


Helix angle 35°/38° 35°/38° 

d 1 




d2 

d1 

d2 

d1 

l 2 

l 2 

l 1 

l 1 


Availability 


3/16 3/16 2 5/8 4 4.760 l 

1/4 1/4 2 1/2 3/4 4 6.350 l 

5/16 5/16 2 1/2 13/16 4 7.940 l 

3/8 3/8 2 1/2 1 4 9.520 l m 

7/16 7/16 2 3/4 1 4 11.110 l 

1/2 1/2 3 1 4 12.700 l m 

5/8 5/8 3 1/2 1 1/4 4 15.870 l m 

3/4 3/4 4 1 1/2 4 19.050 l m 

1 1 4 1 1/2 4 25.400 l m 


Availability 


4.000 6.000 57.00 11.00 4 4.000 l m 

5.000 6.000 57.00 13.00 4 5.000 l m 

6.000 6.000 57.00 13.00 4 6.000 l m 

8.000 8.000 63.00 19.00 4 8.000 l m 

10.000 10.000 72.00 22.00 4 10.000 l m 

12.000 12.000 83.00 26.00 4 12.000 l m 

14.000 14.000 83.00 26.00 4 14.000 l m 

16.000 16.000 92.00 32.00 4 16.000 l m 

18.000 18.000 92.00 32.00 4 18.000 m m 

20.000 20.000 104.00 38.00 4 20.000 l m 

25.000 25.000 121.00 45.00 4 25.000 l m 




8 




Standard length with corner radius 

Series 3079 




Application 

Type 

N 

d 2 


h6 


d 1 

tolerance 

h10 


Long length 

Series 3627 




Application 

Type 

N 

d 2 


h6 


d 1 

tolerance 

h10 


All tools come with 

NAS-Style corner radius 


Diameter 1/2“ to 1“ with flatted shank 

r 

d2 

d1 

d2 

d1 

l 2 

l 2 

l 1 

l 1 

d1=d2 l1 l2 r no. Order 

Availability 


1/4 2 1/2 3/4 0.015 4 6.352 l 

1/4 2 1/2 3/4 0.031 4 6.354 l 

5/16 2 1/2 13/16 0.031 4 7.944 l 

3/8 2 1/2 1 0.031 4 9.524 l 

7/16 2 3/4 1 1/4 0.031 4 11.114 l 

1/2 3 1/2 1 1/4 0.031 4 12.704 l 

1/2 3 1/2 1 1/4 0.040 4 12.705 l 

1/2 3 1/2 1 1/4 0.062 4 12.706 l 

1/2 3 1/2 1 1/4 0.090 4 12.707 l 

5/8 3 1/2 1 1/4 0.031 4 15.874 l 

5/8 3 1/2 1 1/4 0.062 4 15.876 l 

3/4 4 1 1/2 0.062 4 19.056 l 

3/4 4 1 1/2 0.090 4 19.057 l 

3/4 4 1 1/2 0.125 4 19.059 l 

1 4 1 1/2 0.062 4 25.406 l 

1 4 1 1/2 0.090 4 25.407 l 

1 4 1 1/2 0.125 4 25.409 l 


Availability 


10.000 10.000 100.00 40.00 4 10.000 m 

12.000 12.000 150.00 45.00 4 12.000 m 

14.000 14.000 150.00 45.00 4 14.000 m 

16.000 16.000 150.00 65.00 4 16.000 m 

18.000 18.000 150.00 65.00 4 18.000 m 

20.000 20.000 150.00 65.00 4 20.000 m 

25.000 25.000 150.00 75.00 4 25.000 m 





9


RF 100 U/HF variable helix roughing / 

finishing end mills for materials < 54 HRC 

Based on our standard RF 100 end mills, we have developed 

a new series of variable-helix end mills with a completely 

new designed roughing profile. 

The result is a drastic increase in tool life compared to conventional 

knuckle-type geometries and an improvement 

in surface finish-quality of the workpiece, so that in many 

applications finishing operations are unnecessary. 


Surface finish quailty 

of 2-3 µm, requires no 

additional finishing 

operation in many cases 



• increased surface finish quality (Ra = 2-3 µm) 

• small easy removable chips 

• less cutting pressure 

• vastly reduced horsepower consumption 


400 

300 

200 


0 

38° 

400 

300 

200 


0 


35° 

RF 100 

0 0,5 1,0 1,5 2,0 


30° 

32° 

Material 


H 

Hardness 

< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

< 54 HRC 

 





Micro edge 

protection 

for longer 

tool life 






H 


10 



RF 100 U/HF (universal) variable helix end mills with roughing-finishing profile 

Standard length, fine truncated profile 

Series 3082 

Standard 

Guhring std. 

Tool material 

Solid carbide 


Application 

Type 

HF (new) 

d 2 


h6 


d 1 

tolerance 

h10 


NEW: Fine truncated profile 


1/2“ Ø and up with flatted shank 

NF HF 

d2 

d1 

l 2 

l 1 


Availability 


1/4 1/4 2 1/2 3/4 4 6.350 l 

5/16 5/16 2 1/2 13/16 4 7.940 l 

3/8 3/8 2 1/2 1 4 9.520 l 

1/2 1/2 3 1/2 1 1/4 4 12.700 l 

5/8 5/8 3 1/2 1 1/4 4 15.870 l 

3/4 3/4 4 1 1/2 4 19.050 l 

1 1 4 1 1/2 4 25.400 l 





11


RF 100 F variable helix end mills for freecutting 

materials < 30 HRC 

We have developed the RF 100 end mill with variable spiral 

angle primarily to prevent chattering and the so-called 


a large spiral angle) 

Milling cutters with internal coolant delivery offer a considerably 

longer tool life and higher feed rates compared 

to conventional tools. Guhring has designed the milling 

cutter’s radial coolant exit at an angle of 64º, offering considerable 

protection to the sensitive cutting edge corner. 

This coolant exit design also helps to prevent any built-up 

edge. 


Therefore, Guhring‘s RF 100 F variable helix end mills offer 

the following advantages: 






Micro edge 

protection 

for longer 

tool life 

Standard 

milling 

IC 

milling 

25 50 75 100 125 

Tool life in m 

Milling cutters with internal cooling achieve a 2/3 longer tool life in comparison 

with conventional milling cutters. 

40° 

42° 

Material 


H 

Hardness 

< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

< 54 HRC 




Optimal chip evacuation thanks 

to 64º radial coolant exit. 

 







H 


12 



RF 100 F variable helix end mills for free-cutting materials < 30 HRC 


Series 3078 




Application 

Type 

NH 

d 2 


h6 


d 1 

tolerance 

h10 


Series 3629 3366 




Application 

Type NH NH 

d 2 


Helix angle 40°/42° 40°/42° 

d 1 



d2 

d1 

d2 

d1 



l 2 

l 2 

l 1 

l 1 


Availability 


3/16 3/16 2 5/8 4 4.760 l 

1/4 1/4 2 1/2 3/4 4 6.350 l 

5/16 5/16 2 1/2 13/16 4 7.940 l 

3/8 3/8 2 1/2 1 4 9.520 l 

1/2 1/2 3 1/2 1 1/4 4 12.700 l 

5/8 5/8 3 1/2 1 1/4 4 15.870 l 

3/4 3/4 4 1 1/2 4 19.050 l 


Availability 


4.000 6.000 57.00 11.00 4 4.000 m 

5.000 6.000 57.00 13.00 4 5.000 m 

6.000 6.000 57.00 13.00 4 6.000 m m 

8.000 8.000 63.00 19.00 4 8.000 m m 

10.000 10.000 72.00 22.00 4 10.000 m m 

12.000 12.000 83.00 26.00 4 12.000 m m 

16.000 16.000 92.00 32.00 4 16.000 m m 

20.000 20.000 104.00 38.00 4 20.000 m m 





13


RF 100 VA variable helix end mills 

for stainless steels 

Milling stainless steel presents some unique challenges. 

Guhring developed the RF 100 VA style variable helix end 

mill to have greater tool life and performance in stainless 

steels. 

RF 100 VA style end mills feature Guhring‘s newest highperformance 

coating, nano-A TM . This micro-layer coating 

has the superior heat and wear resistance that is needed 

when milling stainless steels. 


This end mill design also allows these benefits: 

• up to 60% higher feed rates 


• increased drilling depths 




• reduced cutter wandering 

400 


Micro edge 

protection 

for longer 

tool life 


300 

200 


0 

400 

300 

200 


RF 100 

0 

0 0,5 1,0 1,5 2,0 


A cutting force comparion between a conventiona type N and a RF 100 

variable helix end mill clearly shows the RF 100 end mill’s quieter and 

more stable machining characteristics 


36° 

38° 

Material 

H 

Hardness 

< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

< 54 HRC 


 









H 


14 



RF 100 VA variable helix end mills for stainless steels 


Series 3080 

Standard 


Tool material 

Solid carbide 


Application 

Type 

N 

d 2 


h6 


d 1 

tolerance 

h10 


d2 

d1 



l 2 

l 1 


Availability 


3/16 3/16 2 5/8 4 4.760 l 

1/4 1/4 2 1/2 3/4 4 6.350 l 

5/16 5/16 2 1/2 13/16 4 7.940 l 

3/8 3/8 2 1/2 1 4 9.520 l 

1/2 1/2 3 1/2 1 1/4 4 12.700 l 

5/8 5/8 3 1/2 1 1/4 4 15.870 l 

3/4 3/4 4 1 1/2 4 19.050 l 

1 1 4 1 1/2 4 25.400 l 





15


RF 100 VA/NF variable helix roughing / 

finishing end mills for stainless steels 


Based on our standard RF 100 end mills, we have developed 

a new series of variable-helix end mills with a completely 

new designed roughing profile for stainless steel. 

The result is a drastic increase in tool life compared to conventional 

knuckle-type geometries and an improvement in 

surface finish-quality of the workpiece, so that in many applications 

finishing operations are unnecessary. 

RF 100 VA style end mills feature Guhring‘s newest highperformance 

coating, nano-A TM . This micro-layer coating 

has the superior heat and wear resistance that is needed 

when milling stainless steels. 

This end mill design also allows these benefits: 




• small easy removable chips 

• less cutting preasure 

• vastly reduced horsepower consumption 

Surface finish quailty 

of 2-3 µm, requires no 

additional finishing 

operation in many cases 


400 

300 

200 

38° 


0 


35° 

400 RF 100 

300 

200 


0 

0 0,5 1,0 1,5 2,0 

Linear Linear milling milling section section [mm] [mm] 

36° 

38° 

Material 


H 

Hardness 

< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

< 54 HRC 



Micro edge 

protection 

for longer 

tool life 

 








H 


16 



RF 100 VA/NF variable helix end mills with roughing / finishing profile for stainless steel 

Standard length, coarse truncated profile 

Series 3081 

Standard 


Tool material 

Solid carbide 


Application 

Type 

NF (new) 

d 2 


h6 

Helix angle 36°/ 38° 

d 1 

tolerance 

h10 


NEW: Coarse truncated profile 


1/2“ Ø and up with flatted shank 

NF 

d2 

d1 

l 2 

l 1 


Availability 


1/4 1/4 2 1/2 3/4 4 6.350 l 

5/16 5/16 2 1/2 13/16 4 7.940 l 

3/8 3/8 2 1/2 1 4 9.520 l 

1/2 1/2 3 1/2 1 1/4 4 12.700 l 

5/8 5/8 3 1/2 1 1/4 4 15.870 l 

3/4 3/4 4 1 1/2 4 19.050 l 

1 1 4 1 1/2 5 25.400 l 





17


RF 100 Ti variable helix end mills 

for titanium and nickel alloys 

We have developed the RF 100 end mill with variable spiral 

angle primarily to prevent chattering and the so-called 


a large spiral angle) 

The RF 100 Ti is especially designed for titanium and other 

aerospace alloys, and has a totally new corner radius design 

for increased tool life and highest metal removal rates. 

The special features of Guhring’s milling cutters with 

corner radius are: 

• outside diameter and the radius is ground in one pass 

• radius point geometry with constant helix-radius 

correction 


High wear protection thanks to radius geometry with constant rake angle 

and continuous spiral. 

Seamless radius area provides high form and contour accuracy. 


35° 

38° 

Material 

H 

Hardness 

< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

< 54 HRC 






 





H 


18 



RF 100 Ti variable helix end mills for titanium and nickel alloys 

Standard length with corner radius 

Series 3876 

Standard 


Tool material 

Solid carbide 


Application 

Type 

N 

d 2 


h6 


d 1 

tolerance 

h10 


All tools come with 

NAS-style corner radius 



r 

d2 

d1 

l 2 

l 1 

d1=d2 l1 l2 r no. Order 

Availability 

fract. fract. fract. fract. 

flutes no. 

1/4 2 1/2 3/4 0.015 4 6.352 l 

1/4 2 1/2 3/4 0.031 4 6.354 l 

5/16 2 1/2 13/16 0.031 4 7.944 l 

3/8 2 1/2 1 0.031 4 9,524 l 

7/16 2 3/4 1 1/4 0.031 4 11.114 l 

1/2 3 1/2 1 1/4 0.031 4 12.704 l 

1/2 3 1/2 1 1/4 0.040 4 12.705 l 

1/2 3 1/2 1 1/4 0.062 4 12.706 l 

1/2 3 1/2 1 1/4 0.090 4 12.707 l 

5/8 3 1/2 1 1/4 0.031 4 15.874 l 

5/8 3 1/2 1 1/4 0.062 4 15.876 l 

3/4 4 1 1/2 0.062 4 19.056 l 

3/4 4 1 1/2 0.090 4 19.057 l 

3/4 4 1 1/2 0.125 4 19.059 l 

1 4 1 1/2 0.062 4 25.406 l 

1 4 1 1/2 0.090 4 25.407 l 

1 4 1 1/2 0.125 4 25.409 l 





19


Guhring variable helix end mills RF 100 A 

for aluminum and cast aluminum 

The RF 100 A style variable helix end mill is designed specifically 

for milling aluminum and aluminum alloys. Higher 

helix and cutting edge rake angles are well-suited for 

aluminum milling applications, and provide optimum tool 

life and performance. 

Guhring‘s RF 100 A variable helix end mills offer the 

following advantages: 







Type W 

Micro edge 

protection 

for longer 

tool life 

10 µm 10 µm 

Peak-to-valley height Ra = 0.81 μm 

RF 100 end mill 

Rt = 5.8 μm 

35° 

Peak-to-valley height Ra = 0.26 μm 

Rt = 1.8 μm 

38° 

Surface finish quality comparison between a conventional end mill type 

N and a RF 100 end mill clearly shows the RF 100 end mill’s quieter and 

more stable machining characteristics. 


40° 

42° 

Material 

Hardness 

< 30 HRC 

30-38 HRC 

< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

H 

< 54 HRC 




 







H 


20 



RF 100 A variable helix end mills for aluminum and cast aluminum < 22 HRC 


Series 3077 




Application 

Type 

W 

d 2 


h6 


d 1 

tolerance 

h10 


Series 3202 




Application 

Type 

W 

d 2 


h6 


d 1 

tolerance 

h10 


d2 

d1 

d2 

d1 



l 2 

l 2 

l 1 

l 1 


Availability 


3/16 3/16 2 5/8 4 4.760 l 

1/4 1/4 2 1/2 3/4 4 6.350 l 

5/16 5/16 2 1/2 13/16 4 7.940 l 

3/8 3/8 2 1/2 1 4 9.520 l 

1/2 1/2 3 1/2 1 1/4 4 12.700 l 

5/8 5/8 3 1/2 1 1/4 4 15.870 l 

3/4 3/4 4 1 1/2 4 19.050 l 


Availability 


4.000 6.000 57.00 11.00 4 4.000 m 

5.000 6.000 57.00 13.00 4 5.000 m 

6.000 6.000 57.00 13.00 4 6.000 m 

8.000 8.000 63.00 19.00 4 8.000 m 

10.000 10.000 72.00 22.00 4 10.000 m 

12.000 12.000 83.00 26.00 4 12.000 m 

16.000 16.000 92.00 32.00 4 16.000 m 

20.000 20.000 104.00 38.00 4 20.000 m 





21


RF 100 SF ”Super Finish“: 

the versatile variable helix end mill 


optimized web thinning 

and flute profile 

44° 

45° 

46° 

20 

18 

Standweg L f 

[m] 

16 

14 

12 

10 

8 

Micro edge 

protection 

for longer 

tool life 

6 

4 

2 

0 

Based on our 4-fluted RF 100 U end mill, RF 100 SF 

possesses a larger, more rigid core paired with 6 cutting 

edges. As well as fine finishing, the application range also 

includes semi-roughing operations, i.e. feed widths (ae) up 

to 0.3 x d. 

Thanks to its special geometry, RF 100 SF 

offers the following advantages: 

• high form accuracy 

• vibration-free 

• optimized flute profile 

• high feed rates possible 

• optimal surface finish quality 

• improved tool life 

Gühring RF 100 

Tool life Lf [m] 

20 

18 

16 

14 

12 

10 

8 

6 

4 

2 

0 

Guhring RF 100 

Tool-Ø: 20 mm 

Coating: FIREX 

Cutting depth: 30 mm 

Feed: DOC = 30 mm/ae = 4mm 

Feed rate: 7,800 mm/tooth 

Tool life: 15 m 

Competition 

Tool life comparison: 

In finishing operations in 42CrMo4RF, RF 100 SF achieves a 7-fold tool life 

increase in comparison with conventional end mills. 

Material 

Hardness 

< 30 HRC 

30-38 HRC 

Werkzeug-Ø: 20 mm 

Beschichtung: FIRE 

Schnitttiefe: 30 mm 

Zustellung: a p 

= 30 mm/a e 

= 4 mm 

Vorschub: 7.800 mm/Z 

Standweg: 15 m 


< 25 HRC 

> 25 HRC 

< Si 3% 

Si 3%-12% 

< 30 HRC 

30-38 HRC 

Tool-Ø: 20 mm 

Coating: TiAlN 

Cutting depth: 10 mm 

Feed: DOC = 30 mm/ae = 4mm 

Feed rate: 2,250 mm/tooth 

Tool life: 15 m 

< 200 HB 30 

> 200 HB 30 

< 32 HRC 

32-50 HRC 

H 

< 54 HRC 







 




H 


22 



RF 100 SF 6-flute variable helix end mills for materials < 54 HRC 


Series 3115 




Application 

Type 

NH 

d 2 


h6 

Helix angle 44°/45°/46° 

d 1 

tolerance 

h10 


Series 3631 




Application 

Type 

NH 

d 2 


h6 

Helix angle 44°/45°/46° 

d 1 

tolerance 

h10 


d2 

d1 

d2 

d1 


l 2 

l 2 

l 1 

l 1 


Availability 


5/16 5/16 2 1/2 13/16 6 7.940 l 

3/8 3/8 2 1/2 1 6 9.520 l 

1/2 1/2 3 1 6 12.700 l 

5/8 5/8 3 1/2 1 1/4 6 15.870 l 

3/4 3/4 4 1 1/2 6 19.050 l 

1 1 4 1 1/2 6 25.400 l 


Availability 


8.000 8.000 63.00 19.00 6 8.000 m 

10.000 10.000 72.00 22.00 6 10.000 m 

12.000 12.000 83.00 26.00 6 12.000 m 

16.000 16.000 92.00 32.00 6 16.000 m 

20.000 20.000 104.00 38.00 6 20.000 m 

25.000 25.000 121.00 45.00 6 25.000 m 





23

Technical section

RF 100 U End Mill Feeds and Speeds 

and Hardened Steel - Series 3079, 3099, 

3100, 3113, 3114, 3627, 3731, 3732, 3736 

Values based on FIREX ® coated end mill 

Adjustment for Axial DOC (Depth of Cut): 

2 x Cutter Dia. IPT 50% Ramp cut reduce IPT by 30% 

Drilling reduce IPT 50% 

Type of Cut 

Calculations based on the following. 

Radial Width of Cut 

(WOC) 

Axial Depth of Cut 

(DOC) 

Slot 1 x Cutter Dia. .5 to 1.0 x Cutter Dia. 

Rough .3 to .8 x Cutter Dia. .5 to 1.0 x Cutter Dia. 

Finish .1 to .2 x Cutter Dia. .5 to 1.0 x Cutter Dia. 

Material 

Color 

Code 

Hardness 

Type of 

Cut 

Speed 

Feed (inches per tooth) by tool diameter 

SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 

Free Machining & Low Carbon Steels 

1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140, 1141, 

11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 

Less Than 

28 HRc 

Slot 425 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 475 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 600 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Medium & High Carbon Steel, Alloy Steel 

& easy-to-machine Tool Steel 

1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 

8620, 9262, 9840, 52100, O1, O2, O6, S2, W1 to W310 

Less than 

38 HRc 

Slot 375 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 450 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 550 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Tool Steels & Die Steels 

O7, M1, M2, M3, M4, M7, T1, T2, T4, T5, T8, T15, A2, A3, A6, 

A7, H10, H11, H12, H13, H19, H21, L3, L6, L7, P2, P20, S1, 

S5, S7, 52100, A 128, D2, D3, D4, D5, D7 

Less than 

38 HRc 

Slot 350 .0006 .0012 .0019 .0024 .0028 .0033 .0051 

Rough 425 .0008 .0015 .0024 .0030 .0035 .0041 .0064 

Finish 500 .0009 .0018 .0029 .0036 .0042 .0050 .0077 

Hardened Steels 

Carbon and Alloy Steels, Tool & Die Steels 

40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Slot 150 .0004 .0010 .0014 .0019 .0023 .0027 .0039 

Rough 175 .0005 .0013 .0018 .0024 .0029 .0034 .0049 

Finish 200 .0006 .0015 .0021 .0029 .0035 .0041 .0059 

Slot 

Rough 

Finish 

Stainless Steel 

Easy to Machine - 416, 410, 430, 302, 303 

Less than 

28 HRc 

Slot 180 .0006 .0011 .0015 .0020 .0024 .0030 .0040 

Rough 250 .0008 .0014 .0019 .0025 .0030 .0038 .0050 

Finish 450 .0009 .0017 .0023 .0030 .0036 .0045 .0060 


Moderately Difficult - 304, 316, Invar, Kovar 

Less than 

28 HRc 

Slot 180 .0006 .0012 .0015 .0020 .0024 .0030 .0040 

Rough 200 .0008 .0015 .0019 .0025 .0030 .0038 .0050 

Finish 400 .0009 .0018 .0023 .0030 .0036 .0045 .0060 


Difficult to Machine - 316L, 17-4 PH, 15-5 PH, 13-8 PH 

Less than 

38 HRc 

Slot 150 .0005 .0009 .0013 .0018 .0022 .0028 .0038 

Rough 180 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 350 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

High-Temperature Alloys 

Nimonic, Inconel, Monel, Hastelloy 

Less than 

38 HRc 

Slot 75 .0002 .0005 .0010 .0012 .0015 .0016 .0022 

Rough 100 .0003 .0006 .0013 .0015 .0019 .0020 .0028 

Finish 130 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

Titanium Alloys 

6AI-4V, 5AI-2.5 Sn, 6AI-2Sn-4Zr-6Mo, 3Ai-8V-6Cr4Mo-4Zr, 

10V-2Fe-3Ai, 13V-11Cr-3Ai 

Less than 

38 HRc 

Slot 150 .0002 .0005 .0010 .0012 .0015 .0016 .0022 

Rough 200 .0003 .0006 .0013 .0015 .0019 .0020 .0028 

Finish 350 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

Cast Iron - Gray CG 

ASTM A48, CLASS 20, 25, 30, 35, SAE J431C, GRADES 

G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 

Cast Iron - Ductile & Malleable CGI 

60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 600 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 675 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 800 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 500 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 575 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 650 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

TECHNICAL 

SECTION 

Aluminum 

Alloys - 2024, 6061, 7075, Wrought 

Less than 

150 HB30 

Slot 

Rough 

Finish 

Aluminum 

High Silicon - A380, A390, Castings 

Less than 

180 HB30 

Slot 

Rough 

Finish 

Magnesium Alloys 

Less than 

180 HB30 

Slot 

Rough 

Finish 

Non-ferrous 

Copper Alloys, Brass, Bronze 

Less than 

120 HB30 

Slot 

Rough 

Finish 

These feeds and speeds are recommendations for initial setup. In actual use, depending on the machining environment and 

workpiece material, significantly higher speeds and feeds may be achievable. Tools with bold feed column no. are preferred choice. 


25

RF 100 U-HF - End Mill Feeds and Speeds 

- Series 3082 





Type of Cut 



(WOC) 


(DOC) 



Semi-Finish .1 to .2 x Cutter Dia. .5 to 2.0 x Cutter Dia. 

Material 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Color 

Code 

Hardness Type of Cut 

Less Than 

28 HRc 

Less than 

38 HRc 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 

Slot 380 .0005 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 420 .0007 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 540 .0008 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 330 .0005 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 400 .0007 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 500 .0008 .0015 .0027 .0035 .0042 .0049 .0074 

TECHNICAL 

SECTION 

















10V-2Fe-3Ai, 13V-11Cr-3Ai 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Aluminum 


Aluminum 



Non-ferrous 


Less than 

38 HRc 

40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Less than 

28 HRc 

Less than 

28 HRc 

Less than 

38 HRc 

Less than 

38 HRc 

Less than 

38 HRc 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 310 .0005 .0011 .0017 .0022 .0025 .0030 .0046 

Rough 380 .0007 .0014 .0021 .0027 .0032 .0037 .0057 

Semi-Finish 450 .0008 .0016 .0026 .0032 .0038 .0045 .0069 

Slot 130 .0004 .0009 .0013 .0017 .0021 .0024 .0035 

Rough 150 .0005 .0011 .0016 .0021 .0026 .0030 .0044 

Semi-Finish 180 .0005 .0014 .0019 .0026 .0031 .0036 .0053 

Slot 

Rough 

Semi-Finish 

Slot 160 .0005 .0010 .0014 .0018 .0022 .0027 .0036 

Rough 225 .0007 .0012 .0017 .0023 .0027 .0034 .0045 

Semi-Finish 400 .0008 .0015 .0020 .0027 .0032 .0041 .0054 

Slot 160 .0005 .0011 .0014 .0018 .0022 .0027 .0036 

Rough 180 .0007 .0014 .0017 .0023 .0027 .0034 .0045 

Semi-Finish 360 .0008 .0016 .0020 .0027 .0032 .0041 .0054 

Slot 135 .0005 .0008 .0012 .0016 .0020 .0025 .0034 

Rough 160 .0007 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 320 .0008 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 65 .0002 .0005 .0009 .0011 .0014 .0014 .0020 

Rough 90 .0002 .0006 .0011 .0014 .0017 .0018 .0025 

Semi-Finish 115 .0003 .0007 .0014 .0016 .0020 .0022 .0030 

Slot 135 .0002 .0005 .0009 .0011 .0014 .0014 .0020 

Rough 180 .0002 .0006 .0011 .0014 .0017 .0018 .0025 

Semi-Finish 315 .0003 .0007 .0014 .0016 .0020 .0022 .0030 

Slot 540 .0005 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 600 .0007 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 720 .0008 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 450 .0005 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 500 .0007 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 585 .0008 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 

Less than 

Rough 

150 HB30 

Semi-Finish 

Slot 

Less than 

Rough 

180 HB30 

Semi-Finish 

Slot 

Less than 

Rough 

180 HB30 

Semi-Finish 

Slot 

Less than 

Rough 

120 HB30 

Semi-Finish 




26

RF 100 F End Mill Feeds and Speeds 

Series 3078, 3366, 3629 





Type of Cut 



(WOC) 


(DOC) 




Material 

Color 

Code 

Hardness 

Type of 

Cut 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Less Than 

28 HRc 

Less than 

38 HRc 

Slot 425 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 475 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 600 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 375 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 450 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 550 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

















10V-2Fe-3Ai, 13V-11Cr-3Ai 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Aluminum 


Aluminum 



Non-ferrous 


Less than 

38 HRc 

40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Less than 

28 HRc 

Less than 

28 HRc 

Less than 

38 HRc 

Less than 

38 HRc 

Less than 

38 HRc 

Less than 

32 HRc 

Less than 

32 HRc 

Less than 

150 HB30 

Less than 

180 HB30 

Less than 

180 HB30 

Less than 

120 HB30 



Slot 350 .0006 .0012 .0019 .0024 .0028 .0033 .0051 

Rough 425 .0008 .0015 .0024 .0030 .0035 .0041 .0064 

Finish 500 .0009 .0018 .0029 .0036 .0042 .0050 .0077 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 

Slot 180 .0006 .0011 .0015 .0020 .0024 .0030 .0040 

Rough 250 .0008 .0014 .0019 .0025 .0030 .0038 .0050 

Finish 450 .0009 .0017 .0023 .0030 .0036 .0045 .0060 

Slot 180 .0006 .0012 .0015 .0020 .0024 .0030 .0040 

Rough 200 .0008 .0015 .0019 .0025 .0030 .0038 .0050 

Finish 400 .0009 .0018 .0023 .0030 .0036 .0045 .0060 

Slot 150 .0005 .0009 .0013 .0018 .0022 .0028 .0038 

Rough 180 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 350 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 75 .0002 .0005 .0010 .0012 .0015 .0016 .0022 


Finish 130 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

Slot 150 .0002 .0005 .0010 .0012 .0015 .0016 .0022 

Rough 200 .0003 .0006 .0013 .0015 .0019 .0020 .0028 

Finish 350 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

Slot 600 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 675 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 800 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 500 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 575 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 650 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 

TECHNICAL 

SECTION 


27

RF 100 VA End Mill Feeds and Speeds 

Series 3080 





Type of Cut 



(WOC) 


(DOC) 




Material 

Color 

Code 

Hardness 

Type of 

Cut 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 

Less Than 

28 HRc 

Slot 425 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 475 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 600 .0009 .0017 .0030 .0039 .0047 .0054 .0083 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Less than 

38 HRc 

Slot 375 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 450 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 550 .0009 .0017 .0030 .0039 .0047 .0054 .0083 





Less than 

38 HRc 

Slot 350 .0006 .0012 .0019 .0024 .0028 .0033 .0051 

Rough 425 .0008 .0015 .0024 .0030 .0035 .0041 .0064 

Finish 500 .0009 .0018 .0029 .0036 .0042 .0050 .0077 



40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 



Less than 

28 HRc 

Slot 180 .0006 .0011 .0015 .0020 .0024 .0030 .0040 

Rough 250 .0008 .0014 .0019 .0025 .0030 .0038 .0050 

Finish 450 .0009 .0017 .0023 .0030 .0036 .0045 .0060 



Less than 

28 HRc 

Slot 180 .0006 .0012 .0015 .0020 .0024 .0030 .0040 

Rough 200 .0008 .0015 .0019 .0025 .0030 .0038 .0050 

Finish 400 .0009 .0018 .0023 .0030 .0036 .0045 .0060 



Less than 

38 HRc 

Slot 150 .0005 .0009 .0013 .0018 .0022 .0028 .0038 

Rough 180 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 350 .0009 .0017 .0030 .0039 .0047 .0054 .0083 



Less than 

38 HRc 

Slot 75 .0002 .0005 .0010 .0012 .0015 .0016 .0022 


Finish 130 .0003 .0008 .0015 .0018 .0023 .0024 .0033 



10V-2Fe-3Ai, 13V-11Cr-3Ai 

Less than 

38 HRc 

Slot 150 .0002 .0005 .0010 .0012 .0015 .0016 .0022 

Rough 200 .0003 .0006 .0013 .0015 .0019 .0020 .0028 

Finish 350 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

TECHNICAL 

SECTION 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 

Aluminum 


Less than 

150 HB30 

Slot 

Rough 

Finish 

Aluminum 


Less than 

180 HB30 

Slot 

Rough 

Finish 


Less than 

180 HB30 

Slot 

Rough 

Finish 

Non-ferrous 


Less than 

120 HB30 

Slot 

Rough 

Finish 




28

RS 100 VA-NF - End Mill Feeds and Speeds 

- Series 3081 





Type of Cut 



(WOC) 


(DOC) 



Semi-Finish .1 to .2 x Cutter Dia. .5 to 2.0 x Cutter Dia. 

Material 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Color 

Code 

Hardness Type of Cut 

Less Than 

28 HRc 

Less than 

38 HRc 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 

Slot 380 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 420 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 540 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 330 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 400 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 500 .0015 .0027 .0035 .0042 .0049 .0074 

















10V-2Fe-3Ai, 13V-11Cr-3Ai 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Aluminum 


Aluminum 



Non-ferrous 


Less than 

38 HRc 

40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Less than 

28 HRc 

Less than 

28 HRc 

Less than 

38 HRc 

Less than 

38 HRc 

Less than 

38 HRc 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 315 .0011 .0017 .0022 .0025 .0030 .0046 

Rough 380 .0014 .0021 .0027 .0032 .0037 .0057 

Semi-Finish 450 .0016 .0026 .0032 .0038 .0045 .0069 

Slot 

Rough 

Semi-Finish 

Slot 

Rough 

Semi-Finish 

Slot 160 .0010 .0014 .0018 .0022 .0027 .0036 

Rough 225 .0012 .0017 .0023 .0027 .0034 .0045 

Semi-Finish 400 .0015 .0020 .0027 .0032 .0041 .0054 

Slot 160 .0011 .0014 .0018 .0022 .0027 .0036 

Rough 180 .0014 .0017 .0023 .0027 .0034 .0045 

Semi-Finish 360 .0016 .0020 .0027 .0032 .0041 .0054 

Slot 135 .0008 .0012 .0016 .0020 .0025 .0034 

Rough 160 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 320 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 65 .0005 .0009 .0011 .0014 .0014 .0020 

Rough 90 .0006 .0011 .0014 .0017 .0018 .0025 

Semi-Finish 115 .0007 .0014 .0016 .0020 .0022 .0030 

Slot 135 .0005 .0009 .0011 .0014 .0014 .0020 

Rough 180 .0006 .0011 .0014 .0017 .0018 .0025 

Semi-Finish 315 .0007 .0014 .0016 .0020 .0022 .0030 

Slot 540 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 600 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 720 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 450 .0010 .0018 .0023 .0028 .0032 .0050 

Rough 520 .0012 .0023 .0029 .0035 .0041 .0062 

Semi-Finish 585 .0015 .0027 .0035 .0042 .0049 .0074 

Slot 

Less than 

Rough 1600 .0012 .0021 .0026 .0031 .0035 .0053 

150 HB30 

Semi-Finish 2200 .0014 .0025 .0031 .0037 .0043 .0064 

Slot 

Less than 

Rough 750 .0011 .0018 .0021 .0025 .0032 .0046 

180 HB30 

Semi-Finish 900 .0013 .0021 .0025 .0030 .0038 .0055 

Slot 

Less than 

Rough 800 .0009 .0019 .0022 .0028 .0034 .0050 

180 HB30 

Semi-Finish 1000 .0011 .0023 .0027 .0034 .0041 .0060 

Slot 

Less than 

Rough 270 .0011 .0018 .0021 .0025 .0032 .0046 

120 HB30 

Semi-Finish 360 .0013 .0021 .0025 .0030 .0038 .0055 

TECHNICAL 

SECTION 




29

RF 100 Ti End Mill Feeds and Speeds 

and Hardened Steel - Series 3876 





Type of Cut 



(WOC) 


(DOC) 




Material 

Color 

Code 

Hardness 

Type of 

Cut 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 

Less Than 

28 HRc 

Slot 425 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 475 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 600 .0009 .0017 .0030 .0039 .0047 .0054 .0083 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Less than 

38 HRc 

Slot 375 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 450 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 550 .0009 .0017 .0030 .0039 .0047 .0054 .0083 





Less than 

38 HRc 

Slot 350 .0006 .0012 .0019 .0024 .0028 .0033 .0051 

Rough 425 .0008 .0015 .0024 .0030 .0035 .0041 .0064 

Finish 500 .0009 .0018 .0029 .0036 .0042 .0050 .0077 



40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Slot 150 .0004 .0010 .0014 .0019 .0023 .0027 .0039 

Rough 175 .0005 .0013 .0018 .0024 .0029 .0034 .0049 

Finish 200 .0006 .0015 .0021 .0029 .0035 .0041 .0059 

Slot 

Rough 

Finish 



Less than 

28 HRc 

Slot 

Rough 

Finish 



Less than 

28 HRc 

Slot 

Rough 

Finish 



Less than 

38 HRc 

Slot 

Rough 

Finish 



Less than 

38 HRc 

Slot 75 .0002 .0005 .0010 .0012 .0015 .0016 .0022 


Finish 130 .0003 .0008 .0015 .0018 .0023 .0024 .0033 



10V-2Fe-3Ai, 13V-11Cr-3Ai 

Less than 

38 HRc 

Slot 150 .0002 .0005 .0010 .0012 .0015 .0016 .0022 

Rough 200 .0003 .0006 .0013 .0015 .0019 .0020 .0028 

Finish 350 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

TECHNICAL 

SECTION 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 600 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 675 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 800 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 500 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 575 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 650 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Aluminum 


Less than 

150 HB30 

Slot 

Rough 

Finish 

Aluminum 


Less than 

180 HB30 

Slot 

Rough 

Finish 


Less than 

180 HB30 

Slot 

Rough 

Finish 

Non-ferrous 


Less than 

120 HB30 

Slot 

Rough 

Finish 




30

RF 100 A End Mill Feeds and Speeds 

Series 3077, 3202 





Type of Cut 



(WOC) 


(DOC) 




Material 

Color 

Code 

Hardness 

Type of 

Cut 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 

Less Than 

28 HRc 

Slot 425 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 475 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 600 .0009 .0017 .0030 .0039 .0047 .0054 .0083 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Less than 

38 HRc 

Slot 

Rough 

Finish 





Less than 

38 HRc 

Slot 

Rough 

Finish 



40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Slot 

Rough 

Finish 

Slot 

Rough 

Finish 



Less than 

28 HRc 

Slot 

Rough 

Finish 



Less than 

28 HRc 

Slot 

Rough 

Finish 



Less than 

38 HRc 

Slot 

Rough 

Finish 



Less than 

38 HRc 

Slot 

Rough 

Finish 



10V-2Fe-3Ai, 13V-11Cr-3Ai 

Less than 

38 HRc 

Slot 

Rough 

Finish 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 600 .0006 .0011 .0020 .0026 .0031 .0036 .0055 

Rough 675 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 800 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 

Rough 

Finish 

TECHNICAL 

SECTION 

Aluminum 


Less than 

150 HB30 

Slot 1800 .0005 .0013 .0023 .0028 .0035 .0039 .0059 

Rough 1800 .0005 .0013 .0023 .0028 .0035 .0039 .0059 

Finish 2500 .0006 .0016 .0028 .0034 .0042 .0047 .0071 

Aluminum 


Less than 

180 HB30 

Slot 850 .0006 .0012 .0020 .0023 .0028 .0035 .0051 

Rough 850 .0006 .0012 .0020 .0023 .0028 .0035 .0051 

Finish 1000 .0007 .0015 .0024 .0028 .0034 .0043 .0061 


Less than 

180 HB30 

Slot 900 .0005 .0010 .0021 .0025 .0031 .0038 .0055 

Rough 900 .0005 .0010 .0021 .0025 .0031 .0038 .0055 

Finish 1100 .0006 .0012 .0025 .0030 .0037 .0046 .0066 

Non-ferrous 


Less than 

120 HB30 

Slot 300 .0006 .0012 .0020 .0023 .0028 .0035 .0051 

Rough 300 .0006 .0012 .0020 .0023 .0028 .0035 .0051 

Finish 400 .0007 .0015 .0024 .0028 .0034 .0043 .0061 




31

RF 100 SF End Mill Feeds and Speeds 

and Hardened Steel - Series 3115, 3631 





Type of Cut 



(WOC) 


(DOC) 

Slot 


Finish < .1 Cutter Dia. .5 to 2.0 x Cutter Dia. 

Material 

Color 

Code 

Hardness 

Type of 

Cut 

Speed 


SFM 1/8” 1/4” 3/8” 1/2” 5/8” 3/4” 1.0” 



11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 

Less Than 

28 HRc 

Slot 

Rough 475 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 600 .0009 .0017 .0030 .0039 .0047 .0054 .0083 



1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 

1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 

4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 


Less than 

38 HRc 

Slot 

Rough 450 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 550 .0009 .0017 .0030 .0039 .0047 .0054 .0083 





Less than 

38 HRc 

Slot 

Rough 425 .0008 .0015 .0024 .0030 .0035 .0041 .0064 

Finish 500 .0009 .0018 .0029 .0036 .0042 .0050 .0077 



40 HRc to 

54 HRc 

54 HRc to 

60 HRc 

Slot 

Rough 175 .0005 .0013 .0018 .0024 .0029 .0034 .0049 

Finish 200 .0006 .0015 .0021 .0029 .0035 .0041 .0059 

Slot 

Rough 

Finish 



Less than 

28 HRc 

Slot 

Rough 250 .0008 .0014 .0019 .0025 .0030 .0038 .0050 

Finish 450 .0009 .0017 .0023 .0030 .0036 .0045 .0060 



Less than 

28 HRc 

Slot 

Rough 200 .0008 .0015 .0019 .0025 .0030 .0038 .0050 

Finish 400 .0009 .0018 .0023 .0030 .0036 .0045 .0060 



Less than 

38 HRc 

Slot 

Rough 180 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 350 .0009 .0017 .0030 .0039 .0047 .0054 .0083 



Less than 

38 HRc 

Slot 


Finish 130 .0003 .0008 .0015 .0018 .0023 .0024 .0033 



10V-2Fe-3Ai, 13V-11Cr-3Ai 

Less than 

38 HRc 

Slot 

Rough 200 .0003 .0006 .0013 .0015 .0019 .0020 .0028 

Finish 350 .0003 .0008 .0015 .0018 .0023 .0024 .0033 

TECHNICAL 

SECTION 



G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 


60-40-18, 65-45-12, D4018, D4512, D5506, 32510, 35108, 

M3210, M4504, M5503, 250, 300, 350, 400, 450 

Less than 

32 HRc 

Less than 

32 HRc 

Slot 

Rough 675 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 800 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Slot 

Rough 575 .0008 .0014 .0025 .0033 .0039 .0045 .0069 

Finish 650 .0009 .0017 .0030 .0039 .0047 .0054 .0083 

Aluminum 


Less than 

150 HB30 

Slot 

Rough 

Finish 

Aluminum 


Less than 

180 HB30 

Slot 

Rough 

Finish 1500 .0009 .0018 .0030 .0035 .0042 .0053 .0077 


Less than 

180 HB30 

Slot 

Rough 

Finish 1500 .0008 .0020 .0035 .0042 .0053 .0059 .0089 

Non-ferrous 


Less than 

120 HB30 

Slot 

Rough 

Finish 1500 .0008 .0020 .0035 .0042 .0053 .0059 .0089 




32

RF 100 style end mills - corner chamfer data 

Chamfer Width 

45˚ Chamfer 

Guhring grinds a small corner chamfer on all carbide end mills. The chamfer greatly increases 

end mill corner strength and tool life. Dead sharp corners on machined parts can lead to crack 

propagation and are rarely called out by part designers. 

The chamfer width on RF 100 style end mills is detailed in the charts below: 

RF 100 U - Series 3113, 3114 

RF 100 A - Series 3077 

RF 100 F - Series 3078 

RF 100 U/HF - Series 3082 

RF 100 VA/NF - Series 3081 

RF 100 U - Series 3736, 3731, 3627 

RF 100 A - Series 3202 

RF 100 F - Series 3366, 3629 

Diameter 

Chamfer Width 

Diameter 

Chamfer Width 

Diameter 

Chamfer Width 

3/16 0.004” 

1/4 0.012” 

4.00MM 

0.05MM 

1/4 0.006” 

5/16 0.012” 

5.00MM 

0.10MM 

5/16 0.006” 

3/8 0.012” 

6.00MM 

0.15MM 

3/8 0.008” 

1/2 0.020” 

8.00MM 

0.15MM 

7/16 0.008” 

5/8 0.020” 

10.00MM 

0.20MM 

1/2 0.010” 

3/4 0.020” 

12.00MM 

0.20MM 

5/8 0.014” 

1 0.031” 

14.00MM 

0.25MM 

3/4 0.018” 

16.00MM 

0.35MM 

1 0.030” 

18.00MM 

0.40MM 

20.00MM 

0.45MM 

25.00MM 

0.60MM 

RF 100 S/F - Series 3631 

RF 100 S/F - Series 3115 

RF 100 VA - Series 3080 

Diameter 

8.00MM 

10.00MM 

Chamfer Width 

0.10MM 

0.10MM 

Diameter Chamfer Width 

5/16 0.004” 

3/8 0.004” 

Diameter Chamfer Width 

3/16 0.006” 

1/4 0.010” 

TECHNICAL 

SECTION 

12.00MM 

0.10MM 

1/2 0.006” 

5/16 0.010” 

16.00MM 

0.15MM 

5/8 0.006” 

3/8 0.012” 

20.00MM 

0.15MM 

3/4 0.006” 

1/2 0.016” 

25.00MM 

0.20MM 

1 0.012” 

5/8 0.020” 

3/4 0.024” 

1 0.035” 

33

Formulae 

Milling Formulas - INCH Values 

Symbol Description Formula 

SFM 

Surface Feet / Minute 

SFM = 

__________ RPM × D 

3.82 

RPM 

Revolutions / Minute 

RPM = 

SFM __________ × 3.82 

D 

IPT 

Feed / Tooth 

IPM 

IPT = _______ 

z x RPM 

IPM 

Inches / Minute 

IPM = IPT × RPM × z 

D (eff) 

Effective Diameter 

D(eff) = 2 × R 2 - (R - D 1 

) 2 

D eff 

TECHNICAL 

SECTION 

Tolerances to DIN ISO 286 

Tolerances: Position and Grade 

Shafts 

from 1 

up to 3 

over 3 

up to 6 

over 6 

up to 10 

Nominal diameter range in µm/tolerances in µm 

over 10 

up to 18 

over 18 

up to 30 

over 30 

up to 50 

over 50 

up to 80 

over 80 

up to 120 

over 120 

up to 180 

over 180 

up to 250 

h 6 0 0 0 0 0 0 0 0 0 0 

-6 -8 -9 -11 -13 -16 -19 -22 -25 -29 

h 7 0 0 0 0 0 0 0 0 0 0 

-10 -12 -15 -18 -21 -25 -30 -35 -40 -46 

h 8 0 0 0 0 0 0 0 0 0 0 

-14 -18 -22 -27 -33 -39 -46 -54 -63 -72 

h 9 0 0 0 0 0 0 0 0 0 0 

-25 -30 -36 -43 -52 -62 -74 -87 -100 -115 

h 10 0 0 0 0 0 0 0 0 0 0 

-40 -48 -58 -70 -84 -100 -120 -140 -160 -185 

e 8* -14 -20 -25 -32 -40 -50 -60 -72 -85 -100 

-28 -38 -47 -59 -73 -89 -106 -126 -148 -172 

*Milling cutters to tolerance e8 produce key slots to tolerance P9 with one cut. 

34

Reconditioning 

We can restore used standard and special carbide and PCD drills, step drills, reamers, and end 

mills to their original factory quality, condition and performance. We also recoat in the same 

facility that we recondition, allowing for quicker turn-around and excellent quality control. 

Your investment in high-performance cutting tools is 

worth preserving. Extending a tool’s life through quality 

reconditioning can greatly increase both productivity and 

profitability. 

Utilizing the same high-precision CNC grinding machines 

that are used in Guhring’s manufacturing plants, our 

Reconditioning Division is well-equipped to restore standard 

and special carbide and PCD tooling to its original factory 

quality, condition and performance. 

recoated within 2 - 3 weeks. 

Durable plastic shipping totes 

are available for high-volume 

reconditioning customers. 

Guhring’s Reconditioning 

Division is staffed with its 

own customer service team, 

allowing for extraordinary and 

personalized service. Combined with our in-house coating 

chambers, our two U.S. locations – Brookfield, WI and 

New Hudson, MI – we are in a unique position to provide 

unmatched quality and service. Complimentary pickup and 

delivery is available to customers in southern WI, northern IL, 

and parts of MI and OH. 

This end mill arrived with heavy chipping on the flute end (left). 

Guhring Reconditioning restored a correct cutting edge (right). 

The result: Greatly extended tool life and significant cost savings. 

High precision remanufacturing delivers longer reground tool 

life and often more regrinds per tool, resulting in significant 

cost savings in terms of both tooling and machining expenses. 

Guhring is able to provide factory reconditioning for our 

own drills, step drills, end mills, reamers and taps – and we 

can provide the same high-quality service for competitors’ 

tooling as well. 

Brookfield, WI 

New Hudson, MI 

With more than 50 years’ combined 

experience in reconditioning, 

Guhring welcomes the 

additional challenge 

of high-performance 

tools, and we are 

able to perform 

alterations such 

as corner radii and 

shank alterations. 

Round shank tools 

from 3 to 32 mm in diameter 

are normally able to be reground and 

• High-precision CNC grinding machines 

• Personalized customer service 

• Reconditioning and coating at one facility 

• Two U.S. locations; quick turnaround

STANDARD & SPECIAL PRODUCT RANGE 

• HSS, HSCO & PM Standards • 

GU 500 DZ Universal Drills 

GT 500 DZ High Performance Drills 

GT 100 Parabolic Flute Deep Hole Drills 

Coolant-Through GT 100 IC Parabolic Flute 

Deep Hole Drills 

GT 80 Parabolic Flute Deep Hole Drills 

Coolant-Through GT 80 IC Parabolic Flute 

Deep Hole Drills 

GT 50 Parabolic Flute Deep Hole Drills 

General Purpose Drills 

Heavy Duty Drills 

Heavy Duty Split Point Drills 

Low Helix Drills 

High Helix Drills 

Micro-Precision Drills 

NC Spot Drills 

Drill-Countersinks 

High Performance HSS-E Taps 

High Performance PM HSS-E Taps 

• HSS & HSCO Specials • 

Drills 

Step Drills 

Step Drill Reamers 

Step Core Drills 

Step Core Drill Reamers 

Reamers 

Step Reamers 

Subland Drills 

Subland Drill Reamers 

Subland Core Drills 

Taps 

DISTRIBUTED BY: 

New! 

New! 

New! 

• Carbide Standards • 

RT 100 U/F High Penetration Drills 

RT 100 X High Penetration Drills 

RT 100 R High Penetration Drills 

RT 100 T Deep Hole Drills 

Coolant-Through RT 100 U/F/C 

High Penetration Drills 

Coolant-Through RT 150 GG 

Straight-Flute High Penetration Drills 

Coolant-Through HT/ RT 800 WP 

Interchangeable Insert Drills 

GS 200 U/G Three-Flute 

High Precision Drills 

GT 100 Parabolic Flute Deep Hole Drills 

Exclusive Line ® Small-Diameter Drills 

EB 100 Small-Diameter Single-Flute 

Gun Drills 

General Purpose Drills 

NC Spot Drills 

PRO-Line Universal End Mills 

TECH-Line High Performance End Mills 

• Carbide Specials • 

Drills 

RT High Performance Drills 

G Drills 

Gun Drills 

Three- & Four-Flute Drills 

Step Drills 

Step Drill Reamers 

Step Core Drills 

Step Core Drill Reamers 

Reamers 

Step Reamers 

Subland Drills 

Subland Drill Reamers 

Subland Core Drills 

Taps 

End Mills 

New! 

• PCD Specials • 

• Coating Services • 

Titanium Nitride (TiN) 

Titanium Carbonitride (TiCN) 

Titanium Aluminum Nitride (TiAlN) 

FIREX ® Special Multilayer Hard Coating 

Super A (AlTiN) 

MolyGlide ® Lubricating Soft Coating 

Nitride/Steam Oxide 

nano-FIREX ® micro thin film gradient 

structure 

• Reconditioning Service • 

• GM 300 Modular HSK • 

Toolholding System 

Hydraulic/Shrink/Collet Chucks 

Adapters 

Collets 

• GE 100 Modular • 

Tooling System 

Guhring, Inc. 

P.O. Box 643, Brookfield, WI 53008-0643 

Shipping Address 

1445 Commerce Avenue 

Brookfield, WI 53045 

Tel (262) 784-6730 (800) 776-6170 

Fax (262) 784-9096 

West Coast Distribution Center 

17902 Georgetown Lane 

Huntington Beach, CA 92647 

Guhring Corporation 

20 Steckle Place, Unit #14 

Kitchener, ON N2E 2C3 

Tel (519) 748-9664 (800) 463-5555 

Fax (519) 748-2954 

www.guhring.com 

01-9935 09/09

RF 100 VARIABLE HELIX SoLId CARBIdE End MILLS - Guhring, Inc.

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