The Muncie A20-A1005-SX5X4BX or A20A1005SX5X4BX is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a rotatable pump flange and a shift cover that rotates a full 360 degrees, giving installers flexibility when mounting in tight spaces. Extended-length PTO mounting fasteners and increased housing clearance further simplify installation. Tapered roller bearings and an increased output shaft diameter address long-term durability, while maximized gear geometry reduces operating noise. Three housing arrangements are available within the series, and the unit is compatible with the EX Drive shaft extension. The torque rating carries a single intermittent/continuous designation, and speed-ratio options range from 5 through 15 speeds depending on configuration. Available from Pro Gear and Transmission. Call us to confirm proper fit for your specific Allison application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Shift cover allows full 360-degree rotation for flexible mounting
Rotatable pump flange accommodates varied installation layouts
Tapered roller bearings and increased output shaft diameter for extended service life
Extended-length mounting fasteners with increased housing clearance for easier installation
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Application: Allison 3000 Series and 4000 Series transmissions
- Speed ratios available: 5, 6, 7, 8, 9, 10, 11, 12, 15
- Torque rating type: Single intermittent/continuous rating
- Housing arrangements: Three
- Pump flange: Rotatable
- Shift cover rotation: 360 degrees
- Drive shaft extension compatibility: EX Drive
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) |
