Product Details:
Press fit outer race needle roller clutches, commonly known as one-way bearings or one-way needle roller bearings, are thin-walled outer races, retainers, spring plates, and needle rollers made from alloy sheet metal, forming bearings for unidirectional movement. They can be used as converters, check valves, and overrunning clutches and are widely applied in transmission components that require one-way action, such as fitness equipment, currency counters, washing machines, fishing gear, toy cars, and more.
Pressed outer ring needle roller clutch (one-way bearing) can be used as a converter, check valve, and overrunning clutch. HF (needle roller clutch): consists of a pressed outer ring and a plastic retainer; the retainer can have a plastic spring leaf or be fitted with stainless steel spring leaf to guide the needle roller. The inclined groove on the outer ring and the needle serve as a locking mechanism. HFL (clutch and bearing assembly): the bearing is mounted on both sides of the needle roller clutch and bears radial loads; the needle and plastic retainer assembly serves as the supporting bearing.
Key Features:
One-way motion, reverse lock.
High conversion frequency and precision.
Structure is as shown in the following table:
Metric Dimensions | British Standard Sizes | Structural Description |
| HF,FC | RC,HFZ | Stainless steel spring strip |
| HFL,FCB | RCB,HFLZ | Stainless steel spring washers with support bearings on both sides |
| HF.R,HFL.R | Stainless steel spring washer, outer rim with knurling | |
| HF.KF,HFL.KF | Plastic Spring Sheet | |
| HF.KFR,HF.KFR | Plastic spring washer, outer ring with knurling | |
| EWC,1WC | External Hexagon |
Outer ring
Material: Typically ST14 low carbon steel
Processing: Stamped or stretched into shape using a press brake or hydraulic press
Heat Treatment: Carbon Nitriding, High Frequency Quenching
Rack
Material: Added Nylon PA66
Machining: Injection molding
Heat Treatment: None
Roller pin
Material: GCr15 bearing steel
Machining: Processed by lathe machining
Heat Treatment: Quenching HRc60-64
Spring Clip
Material: Resin or Stainless Steel



