The Chelsea 272 Series Power Take-Off Assembly, part number 272XMDAX-13RB or 272XMDAX13RB, is a 6-bolt, hot shift PTO designed for medium-duty commercial truck applications. It mounts via a 6-bolt pattern and shifts pneumatically or through a combined pneumatic/hydraulic PowerShift system, with an integral air control valve included. The output shaft is a 1-1/4" round shaft with a 5/16" key. Intermittent torque capacity runs 201-300 lb-ft (401-500 Nm); continuous torque is rated at 300 lb-ft (407 Nm) - verify actual ratings on the application pages for your specific transmission. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Typical markets include towing and recovery, aerial, construction, and water truck equipment. Call us to confirm proper fit for your application.
Features
6-bolt mounting pattern for broad transmission compatibility
Pneumatic and PowerShift (pneumatic/hydraulic) shift options with integral air control valve
1-1/4" round output shaft with 5/16" key
Intermittent torque: 201-300 lb-ft (401-500 Nm); continuous torque rated at 300 lb-ft (407 Nm)
Shaft power output: 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
- Shift Type: Pneumatic / PowerShift (Pneumatic/Hydraulic)
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Output Power: 56+ HP (41-50 kW)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
