The Muncie SH8B-U6812-A1PX or SH8BU6812A1PX is an 8-bolt, air-shift-only power take-off from the Muncie SH8 Series, built for high-torque truck applications. The integral air shift design keeps the air cylinder enclosed within the housing, eliminating exposed external hardware. At speed ratio 05 or 07, the unit delivers 76 HP and 400 ft-lb intermittent torque (280 ft-lb continuous) at 1,000 RPM. Seventeen input gear sets cover most popular transmission configurations, and 12 output shaft options accommodate the widest range of pump types. The 8-bolt cast iron housing mounts directly to standard transmission PTO openings. Call us to confirm proper fit for your application.
Features
8-bolt cast iron housing for direct transmission mounting
Integral air shift design with no exposed air cylinder
Rated up to 76 HP / 400 ft-lb intermittent torque (280 ft-lb continuous) at 1,000 RPM
17 input gear sets cover most popular transmission makes
12 output shaft options fit most common pump types
5 available speed ratios for application flexibility
Tech Specs
- Housing: 8-bolt cast iron
- Shift Type: Air shift (integral, no exposed air cylinder)
- Speed Ratios Available: 5
- Input Gear Sets: 17
- Output Shaft Options: 12
- Intermittent HP (ratio 05/07): 76 HP at 1,000 RPM
- Intermittent Torque (ratio 05/07): 400 ft-lb (542 Nm)
- Continuous Torque (ratio 05/07): 280 ft-lb (379 Nm)
- Intermittent HP (ratio 09): 71 HP at 1,000 RPM
- Intermittent Torque (ratio 09): 375 ft-lb (508 Nm)
- Continuous Torque (ratio 09): 263 ft-lb (356 Nm)
- Intermittent HP (ratio 12/13): 62 HP at 1,000 RPM
- Intermittent Torque (ratio 12/13): 325 ft-lb (441 Nm)
- Continuous Torque (ratio 12/13): 228 ft-lb (309 Nm)
Additional Information
| PTO TORQUE & HORSEPOWER RATINGS | ||||||
|---|---|---|---|---|---|---|
|
Speed Ratio
|
Intermittent HP@1000 RPM
|
Intermittent Torque lbs.ft.
|
Continuous Torque lbs.ft.
|
Intermittent (kw)@1000 RPM
|
Intermittent Torque (NM)
|
Continuous Torque (NM)
|
| 05 | 76 | 400 | 280 | (57) | (542) | (379) |
| 07 | 76 | 400 | 280 | (57) | (542) | (379) |
| 09 | 71 | 375 | 263 | (53) | (508) | (356) |
| 12 | 62 | 325 | 228 | (46) | (441) | (309) |
| 13 | 62 | 325 | 228 | (46) | (441) | (309) |
