The Muncie A20-A1012-HR3BB or A20A1012HR3BB is a medium-duty clutch shift power take-off from the Muncie A20 Series, designed for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting pattern pairs with a shift cover that rotates 360 degrees, giving installers flexibility in tight bays. A rotatable pump flange and extended-length PTO mounting fasteners reduce installation difficulty. The clutch pack design carries a single intermittent/continuous torque rating, and tapered roller bearings support extended service life. Three housing arrangements are available within the series, and the unit is compatible with the EX Drive shaft extension. Call us to confirm the correct housing arrangement and ratio for your application.
Features
10-bolt clutch shift mount designed for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for installation flexibility
Rotatable pump flange with extended-length mounting fasteners for easier fitment
Proven clutch pack design with a single intermittent/continuous torque rating
Tapered roller bearings for extended PTO service life
Compatible with EX Drive shaft extension; three housing arrangements available in the A20 Series
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) |
