The Muncie A20-A1011-HX11X or A20A1011HX11X is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a rotatable pump flange and a shift cover with 360-degree rotation, giving technicians real flexibility during installation. Clearances are increased over earlier designs to ease mounting. Internally, tapered roller bearings extend service life, and the proven clutch pack carries a single intermittent/continuous torque rating so application engineers are not juggling two separate duty-cycle limits. The enlarged output shaft diameter adds durability at the drive end, while the gear geometry is optimized to keep noise levels low. Three housing arrangements are available, and the unit accepts the EX Drive shaft extension. Extended-length PTO mounting fasteners are included. Call us to confirm the correct housing arrangement for your application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and 360-degree rotatable shift cover for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability
Single intermittent/continuous torque rating simplifies application selection
Three housing arrangements; compatible with EX Drive shaft extension
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Compatible transmissions: Allison 3000 Series, Allison 4000 Series
- Shift cover rotation: 360 degrees
- Torque rating type: Single intermittent/continuous rating
- Housing arrangements: Three
- EX Drive shaft extension compatibility: Yes
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | HP (KW) @ 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) |
