The Chelsea 272XMAJX-A3RF or 272XMAJXA3RF is a 272 Series hot shift power take-off assembly designed for medium-duty commercial truck applications. It mounts via a 6-bolt pattern and shifts pneumatically or via hydraulic PowerShift. The output shaft is a 1-1/4" round shaft with a 5/16" key. The 272 Series carries a continuous torque rating up to 300 lb-ft (407 Nm) and an intermittent torque rating of 201-300 lb-ft (401-500 Nm), with output power rated at 56+ HP (41-50 kW). Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. Call us to confirm proper fit for your application.
Features
6-bolt mounting pattern for broad transmission compatibility
Pneumatic or hydraulic PowerShift (hot shift) operation
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power rated at 56+ HP (41-50 kW)
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: Up to 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)
- Shaft Power: 29 HP at 500 RPM; 57 HP at 1000 RPM (21 kW at 500 RPM; 43 kW at 1000 RPM)
- Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other select manufacturers
Additional Information
Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
