The Muncie A20-A1011-HR1BBPX or A20A1011HR1BBPX is a medium-duty, clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and features a rotatable pump flange with a shift cover that allows 360-degree rotation, making installation more flexible in tight engine bays. Tapered roller bearings extend PTO service life, and an increased output shaft diameter adds durability under sustained load. The proven clutch pack carries a single intermittent/continuous torque rating, and the maximized gear geometry keeps noise low. Three housing arrangements are available, and the unit accepts the EX Drive shaft extension. Call us to confirm the correct housing and output configuration for your application.
Features
10-bolt clutch shift mounting for Allison 3000 and 4000 Series transmissions
Rotatable pump flange with shift cover allowing 360-degree rotation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Single intermittent/continuous torque rating simplifies spec selection
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series and 4000 Series
- Shift cover rotation: 360 degrees
- Torque rating type: Single intermittent/continuous rating
- Housing arrangements: Three
- EX Drive shaft extension compatible: Yes
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | @ 1,000 RPM | TORQUE LBS.FT. (NM) |
| 5 | 74% | 105% | 77 (57) | 400 (542) |
| 6 | 85% | 122% | 77 (57) | 400 (542) |
| 7 | 99% | 141% | 79 (59) | 415 (563) |
| 8 | 114% | 163% | 69 (51) | 360 (488) |
| 9 | 122% | 175% | 65 (48) | 340 (461) |
| 10 | 131% | 187% | 59 (44) | 310 (420) |
| 11 | 151% | 215% | 52 (39) | 275 (373) |
| 12 | 162% | 231% | 50 (37) | 265 (359) |
| 15 | 201% | 287% | 39 (29) | 205 (278) |
