Our GMN Ball Bearing Sprag Clutch units are the most popular and are great for medium to low torque requirements. They are a perfect combination of radial ball bearings and a sprag clutch.
The Sprag Clutch dimensions match our radial ball bearing sizes, even the double sealed clutches (2RS), which make them a great “plug-and-play” option for many applications.
Specs for the Ball Bearing Sprag Clutch
- Compact design can fit into tight spaces
- Integrated ball bearing
- Races: 52100 bearing steel, hardened & ground
- Inner ring options: Press fit (FK) or Keyway (FKN)
- Outer ring options: Press fit (FK and FKN) Keyway (FKNN)
- Springs are GMN FE 400 Z Tension Spring
- Oil or grease lubrication is available.
- Sealed Clutches: Delivered with grease lubrication that will last the lifespan of the clutch.
- Open Clutches: Delivered with oil preservative for rust protection.
Product Table Key
- FK: Press Fit at Inner & Outer Ring
- FKN: Keyway on Inner Ring, Press Fit on Outer Ring
- FKNN: Keyway on Inner and Outer Ring
- RS: Single Seal, Grease Lubricated
- 2RS: Double Seal, Grease Lubricated
| Slug | Series | Part No | Shaft Diameter d [mm] | Outer Diameter D [mm] | Width b [mm] | Torque M [Nm] |
|---|---|---|---|---|---|---|
| sc-fk-6203-freewheel-clutch-unit | FK | 6203 | 17 | 40 | 12 | 53 |
| sc-fkn-6203-freewheel-clutch-unit | FKN | 6203 | 17 | 40 | 12 | 53 |
| sc-fknn-6203-freewheel-clutch-unit | FKNN | 6203 | 17 | 40 | 12 | 53 |
| sc-fk-6204-freewheel-clutch-unit | FK | 6204 | 20 | 47 | 14 | 60 |
| sc-fkn-6204-freewheel-clutch-unit | FKN | 6204 | 20 | 47 | 14 | 60 |
| sc-fknn-6204-freewheel-clutch-unit | FKNN | 6204 | 20 | 47 | 14 | 60 |
| sc-fk-6205-freewheel-clutch-unit | FK | 6205 | 25 | 52 | 15 | 104 |
| sc-fkn-6205-freewheel-clutch-unit | FKN | 6205 | 25 | 52 | 15 | 104 |
| sc-fknn-6205-freewheel-clutch-unit | FKNN | 6205 | 25 | 52 | 15 | 104 |
| sc-fk-6206-freewheel-clutch-unit | FK | 6206 | 30 | 62 | 16 | 148 |
| sc-fkn-6206-freewheel-clutch-unit | FKN | 6206 | 30 | 62 | 16 | 148 |
| sc-fknn-6206-freewheel-clutch-unit | FKNN | 6206 | 30 | 62 | 16 | 148 |
| sc-fk-6207-freewheel-clutch-unit | FK | 6207 | 35 | 72 | 17 | 265 |
| sc-fkn-6207-freewheel-clutch-unit | FKN | 6207 | 35 | 72 | 17 | 265 |
| sc-fk-6208-freewheel-clutch-unit | FK | 6208 | 40 | 80 | 18 | 267 |
| sc-fkn-6208-freewheel-clutch-unit | FKN | 6208 | 40 | 80 | 18 | 267 |
| sc-fknn-6208-freewheel-clutch-unit | FKNN | 6208 | 40 | 80 | 18 | 267 |
| sc-fk-6203-rs-freewheel-clutch-unit | FK | 6203 RS | 17 | 40 | 12 | 53 |
| sc-fkn-6203-rs-freewheel-clutch-unit | FKN | 6203 RS | 17 | 40 | 12 | 53 |
| sc-fknn-6203-rs-freewheel-clutch-unit | FKNN | 6203 RS | 17 | 40 | 12 | 53 |
| sc-fk-6204-2rs-freewheel-clutch-unit | FK | 6204 2RS | 20 | 47 | 14 | 60 |
| sc-fkn-6204-2rs-freewheel-clutch-unit | FKN | 6204 2RS | 20 | 47 | 14 | 60 |
| sc-fknn-6204-2rs-freewheel-clutch-unit | FKNN | 6204 2RS | 20 | 47 | 14 | 60 |
| sc-fk-6205-2rs-freewheel-clutch-unit | FK | 6205 2RS | 25 | 52 | 15 | 104 |
| sc-fkn-6205-2rs-freewheel-clutch-unit | FKN | 6205 2RS | 25 | 52 | 15 | 104 |
| sc-fknn-6205-2rs-freewheel-clutch-unit | FKNN | 6205 2RS | 25 | 52 | 15 | 104 |
| sc-fk-6206-2rs-freewheel-clutch-unit | FK | 6206 2RS | 30 | 62 | 16 | 148 |
| sc-fkn-6206-2rs-freewheel-clutch-unit | FKN | 6206 2RS | 30 | 62 | 16 | 148 |
| sc-fknn-6206-2rs-freewheel-clutch-unit | FKNN | 6206 2RS | 30 | 62 | 16 | 148 |
| sc-fk-6207-2rs-freewheel-clutch-unit | FK | 6207 2RS | 35 | 72 | 17 | 265 |
| sc-fkn-6207-2rs-freewheel-clutch-unit | FKN | 6207 2RS | 35 | 72 | 17 | 265 |
| sc-fk-6208-2rs-freewheel-clutch-unit | FK | 6208 2RS | 40 | 80 | 18 | 267 |
| sc-fkn-6208-2rs-freewheel-clutch-unit | FKN | 6208 2RS | 40 | 80 | 18 | 267 |
| sc-fknn-6208-2rs-freewheel-clutch-unit | FKNN | 6208 2RS | 40 | 80 | 18 | 267 |
| sc-fk-6304-freewheel-clutch-unit | FK | 6304 2RS | 20 | 52 | 15 | 104 |
| sc-fknn-6304-freewheel-clutch-unit | FKNN | 6304 2RS | 20 | 52 | 15 | 104 |