The Chelsea 272 Series Power Take-Off Assembly, part number 272XSAJX-13RK or 272XSAJX13RK, is a medium-duty hot-shift PTO built on Chelsea's consolidated 272 platform, which replaces the earlier 230, 231, 236, 238, 270, and 271 series. The 6-bolt mounting pattern pairs with a 1-1/4" round output shaft fitted with a 5/16" key. Shift actuation is pneumatic or pneumatic/hydraulic (PowerShift), with an integral air control valve included. Continuous torque reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Compatible transmissions span Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility across Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) actuation with integral air control valve
Continuous torque rating: 300 lb-ft (407 Nm); intermittent torque: 201-300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW); shaft power at 1,000 RPM: 57 HP (43 kW)
Consolidates and replaces Chelsea 230, 231, 236, 238, 270, and 271 series PTOs
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)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series was developed to consolidate multiple predecessor medium-duty hot-shift PTO lines into a single, more versatile platform. The series offers nine speed ratios and eighteen shift options. Direct-mount outputs are available with optional Wet-Spline technology to extend PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start feature, designed for high-torque start-up conditions. Rotatable flanges allow installation flexibility across a wide range of chassis and body configurations. Typical market applications include aerial work platforms, towing and recovery, construction equipment, and water trucks. Part number 272XSAJX-13RK is also referenced as SP272XSAJX-13RK 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.
