The Muncie SH8S-U6812-A1BX or SH8SU6812A1BX is an integral air shift power takeoff built around an 8-bolt cast iron housing. The air shift mechanism is fully enclosed with no exposed air cylinder, reducing vulnerability to road debris and contamination. Five speed ratios cover a broad range of output requirements, and 12 output shaft options let this unit pair directly with most common pump configurations. Compatibility spans 17 input gear sets, making it practical across the most widely used heavy-duty transmissions. Torque ratings vary by speed ratio: at ratios 05 and 07 the unit is rated 400 lb-ft intermittent and 280 lb-ft continuous; ratio 09 is rated 375 lb-ft intermittent and 263 lb-ft continuous; ratios 12 and 13 are rated 325 lb-ft intermittent and 228 lb-ft continuous. Call us to confirm the correct ratio and output configuration for your application.
Features
Integral air shift design with no exposed air cylinder
8-bolt cast iron housing for strength and ease of mounting
5 speed ratios available to match output requirements
12 output shaft options compatible with most popular pump types
17 input gear sets covering the most widely used heavy-duty transmissions
Torque capacity up to 400 lb-ft intermittent (542 Nm) depending on ratio selected
Tech Specs
- Speed Ratio 05: 76 HP intermittent @ 1000 RPM, 400 lb-ft intermittent torque, 280 lb-ft continuous torque (57 kW / 542 Nm / 379 Nm)
- Speed Ratio 07: 76 HP intermittent @ 1000 RPM, 400 lb-ft intermittent torque, 280 lb-ft continuous torque (57 kW / 542 Nm / 379 Nm)
- Speed Ratio 09: 71 HP intermittent @ 1000 RPM, 375 lb-ft intermittent torque, 263 lb-ft continuous torque (53 kW / 508 Nm / 356 Nm)
- Speed Ratio 12: 62 HP intermittent @ 1000 RPM, 325 lb-ft intermittent torque, 228 lb-ft continuous torque (46 kW / 441 Nm / 309 Nm)
- Speed Ratio 13: 62 HP intermittent @ 1000 RPM, 325 lb-ft intermittent torque, 228 lb-ft continuous torque (46 kW / 441 Nm / 309 Nm)
- Housing: 8-bolt cast iron
- Shift type: Integral air shift, no exposed air cylinder
- Input gear sets: 17
- Output shaft options: 12
- Speed ratios available: 5
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)
|
