The Muncie A20-A1012-SX31XPX or A20A1012SX31XPX is a medium-duty, 10-bolt clutch shift power take-off from the Muncie A20 Series, designed specifically for Allison 3000 and 4000 Series transmissions. This unit runs a 1.19:1 gear ratio with left-hand rotation and a 1-1/4" keyed output shaft, and comes with a standard hose kit. The shift cover allows 360-degree rotation for flexible mounting, and the rotatable pump flange simplifies installation in tight engine compartments. Tapered roller bearings and an increased-diameter output shaft are built into the design to extend service life. The A20 Series carries a single intermittent/continuous torque rating, and three housing arrangements are available. Compatible with the Muncie EX Drive shaft extension. Call Pro Gear and Transmission to confirm the right configuration for your chassis.
Features
Designed for Allison 3000 and 4000 Series transmissions
1.19:1 gear ratio, left-hand rotation, 1-1/4" keyed output shaft
360-degree rotating shift cover and rotatable pump flange for flexible installation
Tapered roller bearings and enlarged output shaft diameter for extended service life
Single intermittent/continuous torque rating simplifies application selection
Compatible with Muncie EX Drive shaft extension; extended-length mounting fasteners included
Tech Specs
- Mounting: 10-bolt clutch shift
- Transmission Application: Allison 3000 Series, Allison 4000 Series
- Gear Ratio: 1.19:1
- Rotation: Left-hand (LH)
- Output Shaft: 1-1/4" keyed
- Shift Type: Clutch shift
- Shift Cover Rotation: 360 degrees
- Housing Arrangements: Three available
- Includes: Standard hose kit
- Compatibility: Muncie EX Drive shaft extension
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) |
