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

Backstop, Overrunning Clutch, One Way Clutch manufacturer / supplier in China, offering Fxrv Integrated Freewheels with Sprag Lift-off X and Torque Limiting, Nfs200 One Way Indexing Clutch Roller Type, Complete Freewheel/Overrunning Clutch with Shaft Coupling (FR...300CA) and so on.

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Supplier Homepage Product cam clutch (backstop clutch) Fxrv Integrated Freewheels with Sprag Lift-off X and Torque Limiting

Fxrv Integrated Freewheels with Sprag Lift-off X and Torque Limiting

FOB Price: US $900 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $900/ Piece
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Production Capacity: 10000PCS/Month
Transport Package: Single Box or as Your Requirements
Payment Terms: L/C, T/T, D/P, Paypal, Money Gram, Western Union

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Basic Info
  • Model NO.: FXRV 100 - 50
  • Certification: ISO9001: 2000
  • Model: Fxrv 100 - 50
  • Outer Diameter: 311mm
  • Width: 70mm
  • Precision: P6
  • Port: Shanghai;Ningbo
  • Trademark: SUMA or OEM
  • Origin: Changzhou, Jiangsu, China
  • Type: Motorcycle Transmissions
  • Material: Gcr15
  • Inner Diameter: 45-80mm
  • Weight: 65kg
  • Sprag Lift-off at Inner Ring Speed: 400r/Min
  • OEM: Accept
  • Delivery: 10-15days
  • Specification: P6
  • HS Code: 84836000
Product Description
Integrated Freewheels FXRV and FXRT
for bolting to the face
with sprag lift-off X and torque limiting
Integrated Freewheels FXRV and FXRT are sprag freewheels without bearing support and with sprag lift-off X. They consist of the Integrated Freewheels FXM with additional torque limiter. The sprag lift-off X ensures a wear-free freewheeling operation when the inner ring rotates at high speed. The freewheels FXRV and FXRT are used as:
for continuous conveyor installations with multiple drives in which each drive is equipped with
its own backstop. In such continuous conveyor installations with multiple drives it is important
to consider the problem of the unequal distribution of backdriving torque to the individual
drives and backstops. As soon as the installation comes to a standstill, the entire backdriving torque is applied primarily to a single backstop, due to differences in the play and elasticity of
the drives involved. In installations equipped with backstops without torque limiters, the individual gearboxes and the corresponding backstops must be designed to accommodate
the entire backdriving torque of the conveyor installation in order to ensure safety.
The problem of the unequal distribution of backdriving torque is solved by using backstops
FXRV and FXRT with torque limiting. The torque limiter which is built into the backstop slips
temporarily when the specified torque is exceeded until the other backstops engage in succession. In this way, the entire backdriving torque of the conveyor installation is distributed
to the individual gearboxes and backstops. Furthermore, dynamic peak torques which occur during the locking process are reduced, thereby protecting the gearboxes against damaging
peak torques. For this reason the use of backstops FXRV and FXRT with torque limiting
in continuous conveyor installations with multiple drives enables the application of gearboxes
with smaller dimensions.
? Protection of gearboxes from overload by unequal load distribution in multiple drives
? Protection of gearboxes from dynamic peak torques during the locking process
? Smaller gearboxes can be used without negatively effecting the safety
? Protection of the backstops, as dynamic peak torques are reduced by temporarly slipping

Freewheel SizeTypeSlipping torque
Sprag lift-off at inner ring speed min-1Max. speed
Inner ring  freewheels min-1
mmmmBore d
mm       mm
mmmmmax. mmA
min. mmU***
max. mm
FXRV  85 - 40MX1 4004306 00045506065

653301436295M 1237296012728011030816521543657
FXRV 100 - 50MX2 3004004 50045505560707580*3501506311M 1239317013430012532818024038665
FXRV 120 - 50MX3 4003204 000606570758095954001506360M 1636317013434014537320026038686
FXRV 140 - 50MX4 5003203 0006590100110

1104301606386M 16363170134375165403220280506102
FXRV 170 - 63MX9 0002502 700708590100120
1305001756460M 16434080156425196473250340386163
FXRV 200 - 63MX12 5002402 100130

1555551756516M 16494080156495226528275390386205
FXRV 240 - 63LX21 2002203 000

1857101958630M 205050901706302906703554554512347
FXRV 260 - 63LX30 0002102 500

2057502058670M 2050501051836703107103755004012411
FXRV 290 - 70LX42 5002002 500

2308502188755M 2452501051907303358004055604812562
FXRV 310 - 96LX53 0001952 100

24090026010800M 2463631202407753558504356006912792
FXRV 360 - 100LX75 0001801 800

28097526710870M 3063631252438504009254856707112942
FXRV 410 - 100LX100 0001701 500

3001 06026710950M 3063631252439504501 00053575071121053

The Integrated Freewheels FXRV are supplied with a set slipping torque MR of the torque limiter. The static backdriving torque ML of the installation (also in the case of an overload)
must under no circumstances achieve the sum of the slipping torques MR of the provided
Integrated Freewheels. The slipping torques MR specified in the table are maximum values;
lower values can be set.
The Integrated Freewheels FXRV are without bearing support, therefore it must be ensured
that the run out (T.I.R.) between the pilot diameter R and the shaft diameter d does not
exceed the value 0,25 mm. Dimension C applies for the Integrated Freewheel. The centering depth of the customer attachment part must be at least C + 0,2 mm. The tolerance of the pilot diameter R of the attachment part must be ISO H7.
The tolerance of the shaft must be ISO h6 or j6.
Example for ordering
Freewheel size FXRV 170 - 63 MX, type with sprag lift-off X, 90 mm bore and slipping torque
9 000 Nm:
? FXRV 170 - 63 MX, d = 90 mm, MR = 9 000 Nm
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