The Muncie A20-A1012-HR1BB or A20A1012HR1BB is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series uses a proven clutch pack design with tapered roller bearings to extend service life, and features an increased output shaft diameter for added durability under sustained load. The shift cover rotates 360 degrees for flexible mounting, and the rotatable pump flange simplifies hydraulic plumbing. Three housing arrangements are available, and the unit accepts the EX Drive shaft extension. Extended-length PTO mounting fasteners and increased installation clearance make service work straightforward. Call us to confirm the correct ratio and housing arrangement for your application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation orientation
Rotatable pump flange simplifies hydraulic circuit plumbing
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under continuous load
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Compatible transmissions: Allison 3000 Series, Allison 4000 Series
- Housing arrangements: 3
- Shift cover rotation: 360 degrees
- 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) |
