The Muncie SH Series power take-off, part number SH8S-U6812-F1BX or SH8SU6812F1BX, is an air-shift-only PTO built for high-torque applications. The integral air shift design keeps the air cylinder internal, eliminating exposed components and simplifying the installation. The 8-bolt cast iron housing mounts securely and handles demanding duty cycles. With 17 input gear sets available across the series, this unit fits most popular heavy-duty transmissions, and 12 output shaft options accommodate the most common pump configurations. Five speed ratios cover a wide range of drive requirements. Torque ratings vary by speed ratio; see the ratings table below for intermittent and continuous values at 1,000 RPM. Confirm the specific configuration fits your transmission and pump before ordering, or call Pro Gear and Transmission for assistance.
Features
Integral air shift design - no exposed air cylinder
8-bolt cast iron housing for secure, high-strength mounting
5 speed ratios: intermittent torque ratings from 325 to 400 lb-ft depending on ratio
17 input gear sets across the series to fit most popular transmissions
12 output shaft options to match most common pump types
Air-shift-only operation designed for high-torque duty cycles
Tech Specs
- Housing: 8-bolt cast iron
- Shift Type: Air shift only (integral, no exposed air cylinder)
- Speed Ratios Available: 5
- Input Gear Sets (series): 17
- Output Shaft Options: 12
- Ratio 05 - Intermittent: 76 HP / 400 lb-ft (542 Nm) @ 1,000 RPM; Continuous: 280 lb-ft (379 Nm)
- Ratio 07 - Intermittent: 76 HP / 400 lb-ft (542 Nm) @ 1,000 RPM; Continuous: 280 lb-ft (379 Nm)
- Ratio 09 - Intermittent: 71 HP / 375 lb-ft (508 Nm) @ 1,000 RPM; Continuous: 263 lb-ft (356 Nm)
- Ratio 12 - Intermittent: 62 HP / 325 lb-ft (441 Nm) @ 1,000 RPM; Continuous: 228 lb-ft (309 Nm)
- Ratio 13 - Intermittent: 62 HP / 325 lb-ft (441 Nm) @ 1,000 RPM; Continuous: 228 lb-ft (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) |
