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Table of Contents◗TENSION CONTROL CLUTCHESWeb ProductsSTC 600 AND 940 CLUTCHESSuperior tension control through a broad torque range.Diagram 1: Plumbing the 600/940with no valvesDiagram 2: Plumbing the 600/940with three valvesThe STC 600 and 940 Clutchesallow superior torque controlfor your web with Nexen’s lineof patented tension control<strong>clutches</strong>. Three different sizedpiston sets can be actuated singly,or in any combination for alarge number of torque-to-airpressure ranges.This unique design gives youprecise torque control withoutthe problems associated withoperating at low air pressures.Ventilated rotor keepsthe clutch and brake coolThe ventilated rotor creates anairflow path that draws coolerambient air into the center ofthe rotor. The flow path directsair past the interface anddissipates heat radially awayfrom the unit. This keeps theunit running cooler and longerfor better performance.Different piston sizesgive you the widest rangeNexen’s <strong>clutches</strong> actuate usinga piston / diaphragm combinationin three different sizes.There are no o-rings to stick,no seals to drag. There’snothing to hinder precisecontrol of torque at loweroperating pressures.By engaging and disengagingvarious combinations of small,medium and large piston sets,you’ll have a broad range oftorque vs. Air pressurecombinations. This gives youprecise control over a widerange of torques and airpressures and lets you run awider variety of materials onthe same machine.Features and benefits• Fine torque control forprecise tension control ofweb processes - 500:1tension control range• Field and dynamicprogramming of pressure/torque characteristics forflexible operations• Diaphragm operation — noseals to drag or o-rings tostick for great low pressureperformance• Different size piston sets• Through-shaft mounting• Compact size• No rotary air unionsrequired — eliminates"gun drilling" shaftsVariable torque rangesthrough the use of valvesUse air valves to engage combinationsof pistons as shownin Diagram 2. Read the torquevalue for each piston setdirectly from the Torque vs. AirPressure graph on the nextpage and add them.Example: STC 600Large piston set at 40 p.s.i. hasa rated torque of 95 in-lb.Medium piston set at 40 p.s.i.has a rated torque of 67 in-lb.Small piston set at 40 p.s.i. hasa rated torque of 41 in-lb.Total torque at 40 p.s.i.:Large + Medium =95 + 67 = 162 in-lb.Small only = 41 in-lb.The total torque range of theclutch will equal the sum of thetorques of the individual sets from0 to maximum air pressure.76
Table of ContentsWeb ProductsTENSION CONTROL CLUTCHES ◗STC 600 AND 940 CLUTCHESTorque vs. Air PressureThermal Horsepower vs. RPMSTC 600STC 940◗ SPECIFICATIONSMODEL PRODUCT NUMBER MAX. RPM TEE FITTING ELBOWS TUBING BORE DIAMETER SHIPPING WEIGHTSTC 600 927200 3600 5 3 60 Inch [1524 MM] 1.125* Inch [29 MM] 20.0 Lbs. [9 Kg]STC 940 927211 2400 5 3 60 Inch [1524 MM] 1.938* Inch [49 MM] 54.2 Lbs. [25 Kg]*With standard square keyways.. Consult factory for other bore size requirements◗ DIMENSIONSPRODUCT HUB KEY SET +.OO1MODEL NUMBER AJ1. AJ2 AK ±.OO1 BB BF CP CR CS CW1 CW2 LENGTH (SQ.) KL P P1 PA SCREW U -.O0OSTC 600 927200 4.000 3.800 3.500 1.50 .25-20 1.28 6.78 0.20 1.84 2.12 6.71 0.250 2.00 6.00 4.75 2.25 .312-18 1.125[102] [97] [89] [38] [6] [33] [172] [5] [47] [54] [170] [6] [51] [153] [121] [57] [8] [29]STC 940 927211 5.625 6.140 4.873 1.75 .375-16 1.75 9.04 0.37 2.37 3.18 8.97 0.500 3.00 9.40 6.62 2.94 .500-13 1.938[143] [156] [124] [44] [10] [44] [230] [9] [60] [81] [228] [13] [76] [239] [168] [75] [13] [49]77
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Table of ContentsPRODUCTCAT ALOG10-
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Table of Contents◗PRODUCT NUMBER
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Table of Contents◗FAMILY OF PRODU
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Table of Contents“Air Champ” ®
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Table of Contents◗APPLICATION GUI
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Table of ContentsEclipse SERVOMOTOR
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Table of ContentsEclipse SERVOMOTOR
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Table of ContentsEclipse LINEAR MOT
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Table of ContentsEclipse NEMA AC MO
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Table of ContentsEclipse METRIC AC
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Table of Contents◗ BW MODEL BRAKE
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Table of Contents◗CALIPER BRAKES
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Table of Contents◗CALIPER BRAKESS
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Table of Contents◗DRUM BRAKES“A
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Table of ContentsDRUM BRAKES “Air
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Table of ContentsDRUM BRAKES “Air
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Table of Contents◗HEAVY DUTY BRAK
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Table of Contents◗METRIC BRAKES
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Table of Contents◗BRAKESWeb Produ
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Table of Contents◗TENSION CONTROL
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Table of Contents◗CLUTCH/BRAKES
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Table of Contents◗CLUTCH/BRAKESFM
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Table of Contents◗CLUTCH/BRAKESA
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Table of ContentsCLUTCH/BRAKES “A
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Table of Contents◗WEB GUIDING CON
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Table of Contents◗WEB AUXILLARY C
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Table of Contents◗CONTROLS“Air
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Table of Contents◗REPAIR KITS“A
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Table of Contents◗FUNCTION EXAMPL
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friction clutches - Arten Freios e Embreagens Industriais

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