hydraulik - Jahns-Regulatoren

H Y D R A U L I K
Planetary Gearboxes
JPL and JPW
April 2009
Jahns-Regulatoren GmbH
D 63069 Offenbach Sprendlinger Landstraße 150 Telefon +49 (0)69 848477-0
D 63009 Offenbach Postfach 10 09 52 Telefax +49 (0)69 84847725
http://www.jahns-hydraulik.de info@jahns-hydraulik.de

Index
H Y D R A U L I K
General information ..............................................................................................................................B. 3
Construction options ........................................................................................................................B. 4-5
Ordering code ..................................................................................................................................B. 12-13
Symbols and units of measurement ........................................................................................... B. 17
1. Technical defi nitions ......................................................................................................................B. 6
1.1 Service factor ..........................................................................................................................B. 6
1.2 Reduction ratio ......................................................................................................................B. 6
1.3 Correction factor kf ..............................................................................................................B. 6
1.4 Torque arm length ................................................................................................................B. 6
1.5 Shrink disk torque .................................................................................................................B. 6
1.6 Speed ........................................................................................................................................B. 6
1.7 Lifetime .....................................................................................................................................B. 6
Indicative values of the duration required for different applications.................B. 7
1.8 Power ........................................................................................................................................B. 7
Thermal factors ......................................................................................................................B. 7
1.9 Torque .......................................................................................................................................B. 8
1.10 Effi ciency ..................................................................................................................................B. 8
2. Gearbox selection method ..........................................................................................................B. 8
2.1 Selection ..................................................................................................................................B. 8
Duration required by the FEM classes ...........................................................................B. 9
2.2 Verifi cations ............................................................................................................................B. 9
3. Motor selection method ............................................................................................................ B. 10
3.1 Hydraulic drives .................................................................................................................. B. 10
Average effi ciencies of hydraulic motors .................................................................. B. 10
3.2 Electric drives ...................................................................................................................... B. 10
4. Negative brakes ............................................................................................................................. B. 11
4.1 Negative brakes .................................................................................................................. B. 11
4.2 Brake selection .................................................................................................................... B. 11
5. Assembly positions ...................................................................................................................... B. 11
6. Ordering code ...........................................................................................................................B. 12-13
7. Mounting instruction .................................................................................................................. B. 14
7.1 Installation ............................................................................................................................ B. 14
Tightening torques and clamping forces .................................................................. B. 14
7.2 Lubrication ........................................................................................................................... B. 15
7.3 Paint ........................................................................................................................................ B. 15
7.4 Installation of fl ange motors ......................................................................................... B. 15
7.5 Installation of motors with connection couplings ................................................ B. 15
7.6 Weights .................................................................................................................................. B. 15
8. Storage ................................................................................................................................................. B. 15
9. Lubrifi cation ...................................................................................................................................... B. 16
9.1 Type of lubricant ................................................................................................................ B. 16
9.2 Choice of oil ......................................................................................................................... B. 16
9.3 Oil changes .......................................................................................................................... B. 16
9.4 Oil quantity .......................................................................................................................... B. 16
Viscosity ................................................................................................................................. B. 16
Recommended lubricants .............................................................................................. B. 16
9.5 Temperature ........................................................................................................................ B. 16
Symbols and units of measurement ........................................................................................... B. 17
Page B. 2
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General information
The new range of JPL planetary gearboxes, completed by the JPW line, enables
Jahns to satisfy the needs of the modern market: more demanding and selective,
dynamic, in constant evolution, requiring organization, simplicity, fl exibility, and
technology. These are market qualities that our company is able to guarantee
because the planetary line was designed around them by Jahns engineers; the
life force of our company.
The planetary gearbox presented in this catalogue, from 450 Nm to 1.205.000 Nm
ISO torque and offer a wide range of reduction ratios from 3,5 to over 15000.
Our gearboxes have been designed for the most selective applications; the large
overloads in mobile applications as well as the long duration and reliability in
industrial applications.
In this catalogue we have increased the amount of support options, to satisfy the
most extreme requirements.
We introduced: foot mounted supports, shaft mounted outputs to complete the
existing female splined output, keyed and cylindrical female, cylindrical male
shafts, splined and hexagonal male shafts, and the integral shaft pinion which
made us leaders in the small slewing drive market.
The output accessories, coupling fl anges, splined or hexagonal bushes, splined
bars, complete the output supports and enable easier adapting.
The range of input accessories has also been enriched with supports, bevel
gears, and new concept brakes. Our products work been successfully on mobile
machines in transport and lifting markets, building, building yards, agricultural,
and marine market sectors, as well as concrete pumps, crane trucks, cranes and
aerial platforms.
The planetary gearboxes are widely used in the following sectors: sheet metal
working, iron and steel, plastic material, water purifi cation, chemical, energy,
mineral and many other sectors.
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Page B. 3
H Y D R A U L I K

Construction options
Motors
1 - Electric motor
2 - Orbital motor
3 - Axial piston motor
4 - Radial piston motor
5 - Motor orbital "MGL"
6 - Orbital motor "MGLR"
7 - Orbital motor "MLG"
8 - Orbital motor "MLR"
Inputs
9 - Motor fl ange adapter
10 - Input shaft
11 - Direct electric motor adapter
12 - Direct orbital motor adapter
13 - Negative brake "F1../F2.."
14 - Negative brake "F5../F6.."
15 - Standard input
16 - Adaptor "MR"
17 - Adaptor "MD"
Reduction stages
18 - Direct mount bevel gear
19 - Input bevel gear
20 - Single stage reduction
21 - Double stage reduction
22 - Triple stage reduction
23 - Four stage reduction
24 - Five stage reduction
Output shaft and supports
25 - Output support "N"
26 - Output support "P"
27 - Output support "T"
28 - Output support "TR"
29 - Output support "TL"
30 - Output support "H"
31 - Output support "F"
32 - Output support "NQ"
33 - Cylindrical output shaft
34 - Splined output shaft
35 - Hexagonal output shaft
Reduction stages
36 - Pinion "P"
37 - Flange "FL"
38 - Cylindrical bushing"BS"
39 - Hexagonal bushing "ES"
40 - Splined bar "BF"
41 - Shrink disk "GA"
42 - End plate "EP"
43 - Oil expanxion tank
H Y D R A U L I K
Page B. 4
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Page B. 5
H Y D R A U L I K

1. Technical defi nitions
1.1 Service factor
fS = service factor:
takes into account the gravity of the application; it depends on the:
working conditions and type,
type of operation,
start-up frequency.
fs • T2 < Tcont
Service factor
Type of load fs
Uniform U Moderate M Heavy H
Number of start- ups per hour 50 50 50
Hydraulic motors 1,0 1,0 1,2 1,0 1,2 1,4 1,2 1,4 1,6
Electric motors 1,1 1,2 1,4 1,2 1,4 1,6 1,4 1,6 1,8
1.2 Reduction ratio
ie = effective reduction ratio:
ratio between the input and output velocity of the gearbox;
ie = n1/n2 .
1.3 Correction factor kf
kf = output support lifetime correction factor:
used to obtain the theoretic duration of the support for values of n2 h different from those found in the
catalogue. For all gearboxes the external load curves are calculated for:
- n2 h = 100.000 for the output supports
- n1 h = 1.500.000 for the input supports
1.4 Torque arm length
Lmin= minimum advised torque arm length for shaft mounted applications.
1.5 Shrink disk torque
1.6 Speed
Mtmax= maximum torque transmittable by the shrink disk when supplied by Jahns.
Transmittable torque by the gearbox and the shrink disk must always be checked for compatibility.
n1 = input velocity
is the input velocity of the gearbox.
n2max = maximum output velocity
maximum output velocity of the gearbox for continuous operation; values of velocity near the maximum
can be achieved in compatibility with the work cycle; for further information please contact thetechnical
services.
1.7 Lifetime
n2 • h = output duration index:
product of the output velocity and the duration in hours.It represents a number proportional to the
stress applied to the element which limits the life of the gearbox. To correlate the velocity and the
duration, the torque Tcont is expressed as a function of the product n2 • h.
With the speed n2 and the torque Tcont required, the duration in hours can be calculated;or alternatively, if
the speed and the duration in hours required are known then the Tcont that the gearbox can transmit
can be calculated:
H Y D R A U L I K
Page B. 6
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Example:
duration necessary in hours = 20.000
output speed of the gearbox = 25 rpm
20.000 [h] 25 [n2] = 500.000 [n2 • h]
therefore a gearbox with a torque of 500.000 n2 • h corresponding to the torque required by the application
will be selected. The same procedure is applied to diagrams of external loads, whilst knowing the application
point of the load and its entity.
n1 • h = input duration index:
is the product of the input speed and the duration expressed in hours.
It is used to calculate the duration of the bearings of the input supports.
If you know velocity n1, the loads applied and the application point,
the duration in hours can be obtained.
Indicative values of the durations required for different applications
Application Hours of life required
Agricultural machines 300-3.000
Machines which operate intermittently or forbrief periods (building machinerie) 3.000-8.000
Machines which operate intermittently or forbrief periods with a high operative reliability (hoists) 8.000-12.000
Machines which operate for 8 hours per day, but not fully utilised (various industrial machines, rotating crusher) 10.000-25.000
Machines which operate for 8 hours per day, fully utilised (various industrial machines, conveyor belts) 20.000-30.000
Machines operating continually (rolling mills, textile machines) 40.000-50.000
1.8 Power
Pt = thermal power:
maximum mechanical power that the gearbox can transmit while operating continuously, with plash
lubrication, without exceeding the thermal limit (oil temperature not greater than 90°C). Greater powers
can be transmitted by using an appropriate cooling system. The value refers to a continual operation
with mechanical effi ciency of 0,97 for each reduction stage, input velocity of 1500 rpm, ambient
temperature of 20°C, altitude 0 / 500 m, application to the cover.
For different conditions, the thermal power value must be multiplied by the thermal factors shown
in the following table. For limited operating periods, followed by rest periods that are suffi ciently long to
guarantee an adequate cooling of the gearbox, the thermal power loses its signifi cance and can be
disregarded.
Room temperature
Thermal factors
working time
100% 80% 60% 40% 20%
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10°C 1,2 1,3 1,4 1,6 1,8
20°C 1,0 1,1 1,3 1,4 1,6
30°C 0,8 1,0 1,1 1,3 1,4
40°C 0,7 0,8 1,0 1,1 1,3
50°C 0,5 0,7 0,8 1,0 1,1
altitude input speed
400 800 1000 1500 2000
0 1,2 1,1 1,1 1,0 0,7
500 1,2 1,1 1,1 1,0 0,7
1.000 1,1 1,0 1,0 0,9 0,6
1.500 1,1 1,0 1,0 0,9 0,6
2.000 1,1 1,0 1,0 0,9 0,6
Page B. 7
H Y D R A U L I K

1.9 Torque
Tiso = limit torque
Transmittable torque of the gearbox, with continuous operation, calculated in accordance to ISO DP6336 for
gears and safety factor of 1. This torque corresponds to a life duration equal to 50.106 cycles of the most stressed
element (theoretically considered unlimited by the ISO DP6336; horizontal curve in the Wöhler fatigue diagram).
This torque does not represent a duration, but it is useful for a quick selection of the maximum size of the
gearbox.
Tcont = continuous torque
Transmittable torque of the gearbox, with continuous operation, that guarantees a duration of ‘h’ hours, with a
gearbox output rotation velocity of ‘n2’ RPM. Tcont is expressed as a function of the product n2 h.
Teq = equivalent torque
Teq represents the value of a constant torque which determines the same duration in hours of the torque
induced by the work cycle. Known as T21 … T2n the torque transmitted by the gearbox at the output velocity n2i
for a time duration in hours of hi, the equivalent torque is:
where
Timp = impulsive torque
value of the static torque or an istantaneous peak load that the gearbox can withstand.
1.10 Effi ciency
ηm = mechanical effi ciency:
ratio between the output power and input power; normally it is considered to be equal to 0,97 – 0,98 per
reduction stage that makes up the gearbox; it depends upon various factors, of which velocity, torque, ratio,
working position and lubrication.
2. Gearbox selection method
2.1 Selection
Once established the selection criteria, which can be defi ned using an ISO or AGMA safety factor, based upon the
class according to the F.E.M. standard or by expressing a minimum life duration, the equivalent output torque Teq is
determined as well as the required duration and the reduction ratio. Using these criteria the gearbox is selected.
- safety factor ISO/AGMA:
the gearbox must garantee the requested theoretical lifetime;
- F.E.M. class:
the gearbox must garanteee that the requested theoretical lifetime correspond to that indicated by the F.E.M.
class as a function of the max and Teq;
- life duration:
the gearbox must have a life duration greater than that required as a function of Teq.
For example, table... on page F.2 / F.9 shows the continuous torques as a function of gearbox size and the reduction
ratio. Please note that when an electric motor is used, the start up torque can be 2.5 times greater than its nominal
value.
H Y D R A U L I K
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For the correct value please refer to the electric motor supplier’s catalogue (classes CEI 2–3/IEC34-1). The start
up torque must not exceed the gearboxes maximum torque. The number of start-up per hour and the hours of
operation per day must be carefully considered. If the output velocity is constantly less than 1 rpm, there may be
problems with the lubrication of the output stage, which could reduce the calculated theoretical life. In this case it
is advised that you contact the Jahns personnel for a proper selection.
class
Jahns waives all responsability of improper use of the selection criteria mentioned above, in particular for all
applications subject to special rules and regulations (for example when personal safety is involved) and places this
responsability on the application constructor. It is recommended that the constructor contact Jahns technical
department for all such technical support.
2.2 Verifi cations
Gearbox output support:
For each gearbox the dynamic radial loads according to ISO 281 for a duration of L10 corresponding to n2 h =
100.000 are shown in the diagrams.
For different durations, applicable radial loads can be obtained by multiplying the values in the diagrams by the
correction factor kf.
With regards to eventual axial loads, one must ensure that they do not exceed the maximum allowed values.
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duration with
Teq

Output torque:
the output torque must never exceed Tmax. In the event that brakess are mounted on the gearbox or the motor,
one must ensure that the braking torque does not exceed the maximum torque of the gearbox, itself multiplied
by 1,1; with regards to the real braking torque, it is also necessary to consider the Effi ciency of the gearbox; see
part 8.
Input velocity:
must not exceed the maximum gearbox input speed.
Thermal power:
in the event that the installed power is greater than the thermal power of the gearbox, it is necessary to provide a
cooling circuit or to select a larger gearbox. The power to dissipate is:
where P2 is the power transmitted by the gearbox. In the event that thermal power is not exceeded, but the
application is particularly onerous, it may be necessary to install an oil circulation and fi ltering system.
3. Motor selection method
3.1 Hydraulic drives
Knowing the hydraulic circuit pressure, from which the Dp of the motor can be obtained, the torque T1, the velocity
n1 required at the input of the gearbox, the hydraulic motor capacity must be greater or equal to:
where ηm is the mechanical effi ciency of the motor. The necessary supply fl ow rate is:
where ηv is the volumetric effi ciency of the motor. Please use the following table as a guide for hydraulic motor
selections.
Hydraulic motors
Use light medium heavy
Pressure [bar]

4. Negative brakes
4.1 Negative brakes
The gearboxes can be supplied with a hydraulic negative brake:
- The brakes from model F01 to model F26 are for the direct mounting of orbit motors with SAE A fl anges.
- The brakes from model F501 to model F 612 reach greater braking torques and are mounted with a ST entrance
for the mounting of fl anges and connecting couplings for a vast range of commercially available motors.
- The brake models F813 to F830 achieve braking torques up to 3.050 Nm and come with the same direct input
assembly as the JPL 310/510.
- The MD brake is mounted directly into a connecting fl ange for the MLG - MLR motors on the JPL 110/JPL 240
gearbox.
Braking is generated by springs, which compress fi xed alternating tempered steel discs against bronze mobile
discs; this thrust is transformed by friction into a braking torque. Brake releasing is achieved by the injection of
hydraulic pressure into the brake; the pressure acts upon a piston, which compresses the springs, thus enabling the
disc to rotate freely.
The brakes are therefore static and closed when hydraulic pressure is zero and they open when the hydraulic
pressure reaches the opening values for release. The brakes are not lubrifi cated by the oil from the gearbox. It is
necessary to carry out the fi lling (approximately 0,1 l) with mineral oil of a viscosity ISO VG32; or as an alternative it
is possible to use hydraulic oils.
4.2 Brake selection
The following parameters must be taken into consideration:
- Braking torques are calculated with the pilot pressure = 0 bar; in the case of counter-pressures in the hydraulic
circuit, the effective torque values are reduced as follows:
Eff. Torque = Static Torque x (Opening pressure – Counter-pressure) / Opening pressure
- The brake torque must be greater or equal to that of the motor:
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Tf T 1
- The brake torque multiplied by the reduction ratio and divided by the output of the gearbox, must be greater or
equal to output torque:
Tf • ie / ηm T 2
- The brake torque multiplied by the reduction ratio and divided by the gearbox effi ciency must not exceed 90% of
the impulse output torque of the gearbox.:
Tf • ie / ηm 0,9 T 2imp
5. Assemblypositions
In order to provide a complete defi nition of the constructive form of the gearbox, the assembly position must be
defi ned.
Based upon the position it is also possible to identify the oil fi lling, level and drain plugs. See page G.236 - G.238.
Page B. 11
H Y D R A U L I K

6. Ordering code
JPW 21 3 P
H Y D R A U L I K
Output version
Gearbox frame size
Execution
JPL = Linear JPW = Angular
Number of stages
1 - 2 - 3 - 4 - 5 - 6
S 78
Page B. 12
Output shaft
S = Male spline
C = Cylindrical
K = Extented cylindrical
E = Hexagonal shaft
Q = Hollow female shaft
FS = Female spline
BF = Female cylindrical
Reduction ratio
Please write the ratio as shown on the selection tables
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ST BB B3 0 BS
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Output accessories
Right angle positioning
Mounting position
Motor adapter confi guration
Direct inputs
Electric motor
Orbit motor
Axial-piston motor
Radial-piston motor
Page B. 13
P = Pinion
FL = Flange
BS = Parallel bushing
EP = End plate
ES = Hexagonal bushing
GA = Shrink disc
VE = Oil expansion tank
BF = Splined bar
BR = Torque arm
PH = Foot support
The example shows the ordering code for a riht angle planetary gearbox, Frame 210 with 3 reductions stages, a foot mounted
output support and a mal splined shaft, and 78.7 reductio ratio, with a "ST" input and "SAE B", 16/32 15 teeth motor adapter
fl ange, horizontal mounting position and standad rigth angle positioning, and a paralell bushing output accessory.
H Y D R A U L I K

7. Mounting instruction
7.1. Installation
Gearbox with fl ange and male shaft::
The connecting surface should be fl at unpainted, machine tooled and at 90 degrees to the rotation axis. The
following table shows the required spigots with their representative tolerances.
Sizes up to JPL 6510: the spigots will have an H8 tolerance.
H Y D R A U L I K
Diameter mm 80-120 120-180 180-250
Tolerance mm 0
+0,054
Diameter mm 500-630 630-800 800-1.000
Tolerance mm +0,076
+0,186
Tightening torques and clamping forces
Class 8.8 Class 10.9 Class 12.9
Torque [Nm] Force [N] Torque [Nm] Force [N] Torque [Nm] Force [N]
M10 50 27.000 70 39.000 85 46.000
M12 85 39.500 120 57.000 145 67.000
M14 136 54.500 195 78.000 230 92.000
M16 213 75.000 310 105.000 360 127.000
M18 300 93.500 420 130.000 495 153.000
M20 430 120.000 600 165.000 700 195.000
M22 580 148.000 810 210.000 965 245.000
M24 730 170.000 1.000 240.000 1.200 285.000
M27 1.080 225.000 1.500 315.000 1.800 370.000
M30 1.470 270.000 2.050 385.000 2.450 455.000
M33 2.000 335.000 2.750 460.000 3.300 550.000
M36 2.550 390.000 3.500 535.000 4.500 645.000
Page B. 14
0
+0,063
+0,080
+0,205
0
+0,072
Diameter mm 250-315 315-400 400-500
Tolerance mm 0
+0,081
Sizes from JPL 1520 version H to JPL 6020:
These gearboxes are provided with two spigot diameters. It is suffi cient to create a single spigot on the structure
when the radial loads on the output shaft are not present or when they are less than 50% of the maximum load
permitted.
0
+0,089
Size JPL 11000 and greater: the spigots will have an F8 tolerance.
Gearboxes with female splined shaft:
The female version gearboxes are not suitable for supporting output radial loads; it is therefore extremely
important to properly align between the gearbox and the driven shaft. It is also necessary to check that the driven
shaft does not undergo bending during the work phases.
Foot mounted:
The support surfaces must be level, and in axis with the machine being driven, to obtain this it is extremely
important that the levelling and alignment operation is carried out carefully. An improper setting of the support
base or an incorrect alignment can adversely affect the life of the gearbox.
Shaft mounted gearbox with shrink disc:
It is necessary to carry out an anchorage of the torque arm that is not constrained to the axis of the gearbox. The
anchorage must also be suitable shock proof. In the dimensional tables of each gearbox one can fi nd the minimum
torque arm lengths needed to carry out the application correctly.
0
+0,097
+0,086
+0,226
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7.2 Lubrication
The gearboxes are supplied without oil.
Before use, the gearbox must be fi lled with oil up to the level indicated using one of the lubricating oils advised.
The choice and the quantity of oil will be referred to the installer/user based upon the type of application.
7.3 Paint
The supplied gearboxes are not painted. A few parts are treated with a base layer of water soluble epoxy ester red
oxide. It is the responsibility of the customer to carry out the surface treatment using a paint that is compatible
with the base layer. O-rings must be protected during the painting.
7.4 Installation of fl ange motors
The installation of the motors to the coupling fl ange supplied by Jahns is a particularly simple operation, but it
must be carried out following the following important suggestions:
-Lubricate the coupling with a light fi lm of grease or anti-seizure lubricant;
-Ensure that the motor rests freely on the gearbox fi xing fl ange without forcing on either the shaft or the spigot;
-Tighten screws.
For further information refer to the maintenance and operation manual.
7.5 Installation of motors with connection couplings
When a connection coupling between motor and gearbox is used, one must verify that the alignment between
the motor and the gearbox is compatible with the type of coupling. Couplings are widely used in industrial
applications for the various functions that they can perform such as:
- limit the input torque,
- dampen vibrations coming from the motor,
- compensate small misalignments.
For the application of couplings, reference must be made to the component’s supplier operating manual.
7.6 Weights
For the gearboxes aproximative weights see page G.241.
8. Storage
The gearboxes must not be stored in the open or in direct contact with the ground. For long time periods they just
be stored full of oil, with the external worked parts covered with grease and the coupling surfaces protected with
anti-oxidant agents and operated under vacuum (a complete rotation of the output shaft is suffi cient) at least once
every two months.
For further information regarding storage, please refer to the maintenance and operating manual.
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Page B. 15
H Y D R A U L I K

9 . Lubrication
9.1 Type of lubricant
The gearbox lubrication is carried out by an oil bath; before the start-up of the gearbox it is necessary to fi ll it with
oil, whilst ensuring visually using the level plug that the correct level is reached; this operation requires particular
attention and the level must be re-checked after a few minutes of operation to ensure it has been carried out
correctly. The quantities of oil shown in the catalogue are purely indicative and vary in function of the reduction
ratio and the type of gearbox input.
9.2 Choice of oil
Any type of oil for mechanical transmissions can be use with EP additives that satisfy the VG68 and VG220 viscosity
classes according to one following standards ISO 3448/SAE 80 - 90W/ SAE J 306-81; in particular cases, oils with
different viscosities can be used, in this event please contact the technical services of Jahns. The oil viscosity must
be chosen as a function of the ambient and working temperature of the gearbox. For gearboxes that have to
operate at high ambient temperatures or where there are strong thermal fl uctuations, the use of synthetic based
oils is recommended.
In gearboxes with vertical assembly and continuous operation, the oil can undergo excessive overheating; in this
event an external expansion tank is necessary (this can be supplied by Jahns) to enable the oil to expand due to
thermal dilation.
9.3 Oil changes
The oil change must be carried out after the fi rst 150 hours of work, and then after the following 2000 or 4000
hours of operation, depending on how the gearbox is used and at least once a year. To facilitate the emptying of
the gearbox, we advise that the oil change is carried out while the gearbox is warm, the internal parts must be
washed with suitable liquid before the introduction of new oil. Different oils must not be mixed together; this is
particularly true of mineral and synthetic oils. After the gearbox has been operated, the lubricant level must be
checked periodically and topping off arried out when necessary.
9.4 Oil quantity
The oil quantities required for proper lubrifi cation can be found in page G.239.
SAE
J-306-81
H Y D R A U L I K
VG
ISO
3448
SAE 80W 68
85WSAE90W 150
SAE 220
Viscosity
Operating temperature
Ambient temperature
-20° -10° 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100°
Recommended lubricants
producer mineral oil synthetik oil producer mineral oil synthetik oil
AGIP Blasia Blasia S FINA Giran
ARAL Degol BG Degol GS IP Mellana Telesia Oil
BP Energol GR XP Enersyn HTX KLUBER Kluberoil GEM 1 Klubersynt GH6
CASTROL Alpha SP Alpha SN MOBIL Mobilgear SHC
CHEVRON NL Gear OPTIMOL Ultra
DEA Falcon CLP Q8 Goya El Greco
ELF Reductelf SP Elf Syntherma P SHELL Omala EP Tivela Oil
ESSO Spartan Ep Glycolube TOTAL Carter EP
9.5 Temperature
The advised operating temperature of standard gearboxes should be between -15 deg.C. and + 40 deg. C.
Page B. 16
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Symbol Unit Description
Fr 2 N Output shaft radial loads
Fa 2 N Outpur shaft axial loads
Fr 1 N Input shaft radial loads
Fa 1 N Input shaft axial loads
fs - Service factor
ie - Effective reduction ratio
kf - Output support life correction factor
L min mm Torque arm length
Mt max Nm Shrink disk torque
n 1 rpm Input speed
n 1 • h rpm h Input duration index
n 2 max rpm Maximum output speed
n 2 rpm Output speed
n 2 • h rpm h Output duration inex
h h Hours
hi - Percentage of time
p bar Pressure
P 1 kW Input power
P 2 kW Output power
P d kW Dissipated power
Pt kW Thermal power
Q l/min Oil fl ow
Tf Nm Static braking torque
T1 Nm Input torque
T2 Nm Output torque
Teq Nm Equivalent torque
TISO Nm ISO limit torque
T cont Nm Continuous torque
Tmax Nm Maximum torque
Timp Nm Impulse torque
TM Nm Maximum load torque
V cm³ Displacement
X mm reaction distance
ηm - Mechanical effi ciency
ηv - Volumetric effi ciency
ηt - Total yield
Tb Nm Static breaking torque
pb bar Total release pressure
p max bar Maximum pressure
n1 max rpm Maximimum speed
www.jahns-hydraulik.de
Symbols and units of measurement
Page B. 17
Symbol Description
Output support
Input
Input support
Tightening torque
Oil quantity
Weight
Oil fi lling
Oil level
Oil draining
Hydraulic motors
Electric motors
Recommend srews
H Y D R A U L I K

Components for hydraulics and chemical engineering
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