The Chelsea PTO Assembly 272MKAJP-B5XD or 272MKAJPB5XD is a power take-off unit built for a wide range of commercial truck applications. It mounts via a 6-bolt pattern and ships with a 1-1/4" round output shaft fitted with a 5/16" key. Shift actuation is pneumatic or pneumatic/hydraulic PowerShift, making it compatible with air-equipped chassis. Continuous torque rating reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Output power runs 56+ HP (41-50 kW), with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM among others. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for direct transmission attachment
1-1/4" round output shaft with 5/16" key
Pneumatic and PowerShift (pneumatic/hydraulic) shift actuation
Continuous torque: 300 lb-ft (407 Nm); intermittent torque: 201-300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW); shaft power 29 HP at 500 RPM, 57 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque: 300 lb-ft (407 Nm) - Check Application Pages for Actual Torque Ratings
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Output Power: 56+ HP (41-50 kW)
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other manufacturers
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
