The Chelsea 272 Series Power Take-Off Assembly, part number 272XAAJP-L5XD or 272XAAJPL5XD, is a 6-bolt hot-shift PTO rated for up to 300 lb-ft of continuous torque and 201-300 lb-ft intermittently. The output shaft is a 1-1/4" round shaft with a 5/16" key. Shift options include pneumatic (air) and PowerShift pneumatic/hydraulic, with an integral air control valve included. Output power reaches 56+ HP, with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmissions span Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. The 272 Series consolidates several prior medium-duty PTO lines, offering nine speed ratios and eighteen shift configurations in a single platform. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (air) shift and PowerShift pneumatic/hydraulic shift options
Integral air control valve included
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft
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 (Air Shift); PowerShift (Pneumatic/Hydraulic)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 medium-duty PTO lines into a single platform. The series offers nine speed ratios and eighteen shift configurations. Direct-mount output options are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations are available with the Smart-Start option, designed for high-torque start-up conditions. Typical applications include towing and recovery, aerial work, construction equipment, and water trucks. Rotatable flanges allow flexible installation positioning. Part number 272XAAJP-L5XD is also referenced as SP272XAAJP-L5XD in some catalog systems.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
