Ball Bearing Sprag Clutch Units are Great for Medium to Low Torque Needs
Our most popular sprag clutch product line.
Great for medium to low torque requirements and are a perfect combination of radial 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 |
Related Resources, Guides & Articles
- Find detailed sprag clutch information in our Sprag Clutch Catalog
- Need more help finding the right clutch for your needs? Go back to our sprag clutch overview page
- Installation Guide
- How does a sprag clutch work?
Why Buy From GMN Bearing USA?
The success of our business comes from three main pillars of excellence:
- Rapid Response: 99% of inquiries are responded to within one business day and most orders ship out the same day (from Houston, Texas).
- Expert-Level Support: Our onsite mechanical engineers and technical support specialists provide answers to your most difficult questions.
- Quality 360°: Our internal quality control process is one of the highest in the industry. We make sure GMN is synonymous with quality.
Need help finding the right product for your application? Contact us today.