The Muncie SH8 Series Power Take-Off, part number SH8S-U6812-A3CX or SH8SU6812A3CX, is an air-shift-only PTO built for high-torque applications. It features an 8-bolt cast iron housing that simplifies mounting and delivers structural strength. The integral air shift design eliminates any exposed air cylinder, keeping the unit compact and reducing potential failure points. Five speed ratios give installation flexibility, and 17 input gear sets make it compatible with most popular transmissions. Twelve output shaft options cover most common hydraulic pump configurations. Torque ratings vary by speed ratio, reaching up to 400 ft-lb intermittent and 280 ft-lb continuous at the top speed ratios. Pro Gear and Transmission can help you confirm the right configuration for your truck.
Features
Integral air shift design - no exposed air cylinder
8-bolt cast iron housing for strength and straightforward mounting
17 input gear sets to fit most popular transmissions
12 output shaft options to match most common hydraulic pump types
5 available speed ratios with intermittent torque ratings from 325 to 400 ft-lb depending on ratio selected
Series positioned between the Muncie TG and 82 Series for medium-duty high-torque applications
Tech Specs
- Housing: 8-bolt cast iron
- Shift Type: Air shift only (integral, no exposed air cylinder)
- Input Gear Sets: 17 (fits most popular transmissions)
- Output Shaft Options: 12
- Speed Ratios Available: 5
- Speed Ratio 05 - Intermittent: 76 HP / 400 ft-lb (542 Nm) | Continuous: 280 ft-lb (379 Nm)
- Speed Ratio 07 - Intermittent: 76 HP / 400 ft-lb (542 Nm) | Continuous: 280 ft-lb (379 Nm)
- Speed Ratio 09 - Intermittent: 71 HP / 375 ft-lb (508 Nm) | Continuous: 263 ft-lb (356 Nm)
- Speed Ratio 12 - Intermittent: 62 HP / 325 ft-lb (441 Nm) | Continuous: 228 ft-lb (309 Nm)
- Speed Ratio 13 - Intermittent: 62 HP / 325 ft-lb (441 Nm) | Continuous: 228 ft-lb (309 Nm)
- All HP ratings at 1000 RPM
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) |
