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- Overrunning/Back-stopping/Indexing Clutch
- PB12 Model
- 1 3/8" 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
- Shaft must extend through bushing for proper installation
| Direction of Rotation | Left Hand |
| Torque Capacity | 1350 ft-lbs |
| Thread Diameter | N/A |
| Snap Ring Required | RST250 |
| Overrunning Speed Inner Race | 1200 rpm |
| Design | Sleeve Bearing Supported |
| Model No. | PB12 |
| Outside Dia. | 4.438 in |
| Lubrication | Grease |
| Overrunning Speed Outer Race | 300 rpm |
| Type | General Purpose |
| No. of Mounting Holes | 0 |
| Mounting Diameter | 2.5 in |
| Hub Dia. | 2.375 in |
| Overrunning Clutch | Yes |
| Overall Width | 3.875 in |
| Indexing Clutch | Yes |
| Keyway Length | 1.125 in |
| Inner Race Width | 2.063 in |
| Model | PB-12A |
| Inner Race [Max] | 1200 rpm |
| Length to Snap Ring Groove | 2.063 in |
| Backstopping Clutch | Yes |
| Overall Diameter | 4.438 in |
| Mounting Length | 1.438 in |
| Outer Race [Max] | 300 rpm |
| Bore Size | 1.375 in |
| Key for Bore Size | 5/16 x 5/32 |
| Keyway | Keyway on Inside Diameter |
| Configuration | LH |
| Key Size | 3/8 x 3/16 |
| Series | PB |
| Groove Dia. | 2.391/2.379 |
| Outer Width | 3.313 in |
| Groove Width | 0.120/0.130 |
| Major Dia | 1.875 in |
| Length to Groove | 1.311/1.321 |
| Weight | 8.5 LB |
| EAN or UPC | 662288408185 |
