NF35 One-Way Clutch - 35x100x53mm - Freewheel Roller Type - BackstopNF35 One Way Clutch 35mm x 100mm x 53mm For Overrunning, Indexing, Backstopping The NF35 is a robust one way clutch designed to allow rotation in only one direction ideal for protecting machines from reverse motion. Its commonly used in conveyor systems, mining equipment, printing presses, and hydraulic units where gravity or mechanical load must not cause backspin during power loss. Type: One way clutch (non bearing supported) Rotation Control: For