ASNU40 One Way Clutch Bearing 40x90x33mm Backstop Freewheel Unit for Conveyor and Industrial Drives, External Bearing Support Required for Overrunning Indexing and Backstopping

ASNU40 One Way Clutch 40mm x 90mm x 33mm
✔️ Sprag Backstop Freewheel for Direction Control

This ASNU40 one way clutch is made for systems that need rotation in only one direction while blocking reverse motion. It’s commonly used in conveyors, mining equipment, textile machines, printing lines, and lifting systems where load rollback must be prevented during power loss. Pack size includes 1 clutch.

✅ Pack size: 1 clutch
✅ Clutch type: one way sprag clutch backstop
✅ Operation modes: overrunning, indexing, backstopping
✅ External bearing support required
✅ Inner diameter: 40 mm
✅ Outer diameter: 90 mm
✅ Width: 33 mm
✅ Rated torque: 430 TKN
✅ Resistance torque: 38 TR
✅ Used in conveyors, hydraulic systems, and industrial drives

Dimensions in mm

d D L D2 b t s e f
40 90 33 78 12 4.1 2.5 1.8 1

💡 What is the role of a backstop one way clutch in conveyor and lifting systems?
A backstop clutch is designed to stop reverse rotation while allowing smooth forward drive.

• Prevents load rollback when power is lost or stopped

• Allows free rotation in the driven direction with low drag

• Supports safe operation in vertical or inclined transport systems

This one way clutch helps keep motion controlled and loads secure for dependable performance in heavy duty mechanical setups.