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- Overrunning/Back-stopping/Indexing Clutch
- PB8 Model
- 7/8" Bore
- Left Hand Rotation
applications
- Indexing drives
- Print processing equipment
features
- Morse Mechanical Clutches offer the most complete and versatile selection of backstop, overriding, and index cluthes in the industry
- PB series clutch features precision formed cams providing high torque capacities with excellent wear life. These models are suitable for general duty applications.
- A bonze seal maintains race concentricity. They a asymmetrical by design, so must be ordered according to rotation requirements.
caution
- Do not run Worm Gear units over 200 °F.
| Lubrication | Grease |
| Torque Capacity | 450 ft-lbs |
| No. of Mounting Holes | 0 |
| Outside Dia. | 3.250 in |
| Overrunning Speed Outer Race | 650 rpm |
| Overrunning Speed Inner Race | 1600 rpm |
| Direction of Rotation | Left Hand |
| Thread Diameter | N/A |
| Model No. | PB8 |
| Type | General Purpose |
| Snap Ring Required | RS175 |
| Design | Sleeve Bearing Supported |
| Keyway | Keyway on Inside Diameter |
| Keyway Length | 1.063 in |
| Overall Width | 3.563 in |
| Groove Dia. | 1.696/1.686 |
| Key Size | 1/4 x 1/8 |
| Length to Groove | 1.315/1.32 |
| Key for Bore Size | 3/16 x 3/32 |
| Backstopping Clutch | Yes |
| Overrunning Clutch | Yes |
| Groove Width | 0.056/0.076 |
| Hub Dia. | 1.625 in |
| Major Dia | 1.688 in |
| Mounting Diameter | 1.75 in |
| Length to Snap Ring Groove | 1.75 in |
| Overall Diameter | 3.25 in |
| Model | PB-8A |
| Series | PB |
| Indexing Clutch | Yes |
| Outer Race [Max] | 650 rpm |
| Bore Size | 0.875 in |
| Mounting Length | 1.438 in |
| Configuration | LH |
| Weight | 3.75 LB |
| EAN or UPC | 662288408109 |
