The Chelsea 272MAAJP-A3RK or 272MAAJPA3RK is a 6-bolt hot shift power take-off assembly from the Chelsea 272 Series, a medium-duty PTO line that consolidates earlier 230, 231, 236, 238, 270, and 271 series units into one platform. This assembly features a 1-1/4" round output shaft with a 5/16" key and supports pneumatic or PowerShift (pneumatic/hydraulic) engagement. Intermittent torque rating for the 272 Series reaches 201-300 lb-ft (401-500 Nm), with continuous torque up to 300 lb-ft (407 Nm) - verify actual rating on the application page for your specific installation. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your application.
Features
6-bolt mounting configuration
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) shift engagement
Integral air control valve included
Intermittent torque: 201-300 lb-ft (401-500 Nm); continuous torque up to 300 lb-ft (407 Nm) - check application pages for actual ratings
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)
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series consolidates six earlier Chelsea PTO series (230, 231, 236, 238, 270, and 271) into a single medium-duty hot shift platform. The series offers nine speed ratios and 18 shift options. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft outputs include the Smart-Start option, designed for high-torque start-up conditions. Rotatable flanges allow flexible installation geometry. Typical market applications include towing and recovery, aerial work platforms, construction equipment, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
