The Chelsea 272 Series Power Take-Off Assembly, part number 272MBAJP-A5RK or 272MBAJPA5RK, is a 6-bolt hot shift PTO designed for medium-duty applications across towing and recovery, aerial, construction equipment, and water truck markets. It features a 1-1/4" round output shaft with a 5/16" key and mounts via a standard 6-bolt pattern. Shift type is pneumatic, with PowerShift (pneumatic/hydraulic) capability and an integral air control valve included. Continuous torque rating reaches 300 lb-ft (407 Nm); intermittent torque falls in the 201-300 lb-ft (401-500 Nm) range. 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 broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic and PowerShift (pneumatic/hydraulic) shift options
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Integral air control valve included
Suited for aerial, towing and recovery, construction, and water truck applications
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 at 500 RPM: 29 HP (21 kW); at 1000 RPM: 57 HP (43 kW)
- Compatible Transmissions: 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.
