Gold Member Since 2014
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Changzhou Suma Precision Machinery Co., Ltd.

Backstop, Sprag Clutch, One Way Clutch manufacturer / supplier in China, offering Complete Freewheel Clutch with Sprags Used as Backstop, Asnu20 Roller Type Freewheel Overrunning Clutch, 200 Series Backstop One Way Clutch and so on.

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Supplier Homepage Product cam clutch (backstop clutch) Complete Freewheel Clutch with Sprags Used as Backstop

Complete Freewheel Clutch with Sprags Used as Backstop

FOB Price: US $100 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $100/ Piece
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Port: Shanghai, China
Production Capacity: 10000PCS/Year
Payment Terms: T/T, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: FA
  • Type: Sprag
  • Bore Size: 0.984-3.150inch
  • Maximum Torque: 340-3690(Lb-FT)
  • OEM: Accept
  • Trademark: SUMA or OEM
  • Specification: P6
  • HS Code: 84836000
  • Model: Fa
  • Max Speed: 90-250rpm
  • Weight: 2.-18.8lbs
  • Application: Low Speed Freewheeling Operations
  • Precision: P6
  • Transport Package: Single Box
  • Origin: Changzhou
Product Description
Complete Freewheel Clutch with Sprags Used as Backstop
Complete Freewheels FA with torque arm are sprag freewheels with sleeve bearings. They are grease-lubricated and require no maintenance. The freewheels FA are used as:
Indexing Freewheels
for applications with low speed freewheeling operation when used as a backstop or with a low to medium total number of actuations when used as an indexing freewheel.
In addition the standard type, two other types are available for extended service life and indexing accuracy. Maximum torques up to 3 690 lb-ft. Bores up to 3.15 inch.
Application example
Two Complete Freewheels FA 57 in the roller feed of a sheet metal processing machine. The indexing freewheel arranged on the left is driven via a bell crank with an adjustable lift. This enables an infinite setting of the feed. The backstop arranged on the right prevents the indexing rollers from running backwards while the indexing freewheel carries out its back stroke. Often, an additional small brake is provided in order to prevent the accelerated sheet metal strip from advancing.
Freewheel SizeTypeMaximum torque MM
Max.speed innerring freewheel
Bore d max. inch 
FA  37SF3402500.9841.3782.9920.4723.5431.3780.4532.2
FA  57SF9301701.6501.9693.9370.6304.9211.7720.5715.5
FA  82SF23601302.3602.3625.5120.7096.2992.3620.82712.2
FA 107SF3690903.1503.1506.6930.7877.0872.5590.88618.8

When used as a backstop, the back driving torque is supported by the torque arm. The torque arm must not be clamped into position. It must have 0.002 to 0.008 inch play in the axial and radial directions. When used as an indexing freewheel, the torque arm serves as the indexing lever arm. The torque arm is not heat treated enabling the customer alter the torque arm to suit his application. The recommended tolerance of the shaft is
+ 0 / - 0.001 inch.

Complete Freewheel Clutch with Sprags Used as Backstop

Complete Freewheel Clutch with Sprags Used as BackstopComplete Freewheel Clutch with Sprags Used as BackstopComplete Freewheel Clutch with Sprags Used as Backstop
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