The Chelsea 272GMAJX-A3XD is a 6-bolt hot shift power take-off assembly from the Chelsea 272 Series, a medium-duty PTO line that consolidates the earlier 230, 231, 236, 238, 270, and 271 series into a single platform. This unit features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and hydraulic (PowerShift) shift operation, with an integral air control valve included. Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Shaft power output at 1,000 RPM is 57 HP (43 kW). Compatible transmission families include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. Call us to confirm proper fit for your specific transmission and application.
Features
Chelsea 272 Series 6-bolt hot shift PTO assembly
1-1/4" round output shaft with 5/16" key
Pneumatic and hydraulic (PowerShift) shift options; includes integral air control valve
Continuous torque rating: 300 lb-ft (407 Nm); intermittent torque: 201-300 lb-ft (401-500 Nm)
Shaft power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
Broad transmission compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
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)
- Shaft Power at 1,000 RPM: 57 HP (43 kW)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
Additional Information
The Chelsea 272 Series consolidates six earlier medium-duty PTO lines - the 230, 231, 236, 238, 270, and 271 - into a single versatile platform. The series offers nine speed ratios, eighteen shift configurations, and a choice of direct mount or driveshaft outputs. Direct mount configurations are available with optional Wet-Spline technology to extend PTO and pump shaft service life. Driveshaft output versions can be equipped with the Smart-Start option, designed for high-torque startup conditions. Rotatable flanges allow flexible installation orientation. Typical application markets include towing and recovery, aerial work, construction equipment, and water trucks. Part number 272GMAJX-A3XD or 272GMAJXA3XD is sold by Pro Gear and Transmission. Call us to confirm the right configuration for your transmission and duty cycle.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
