The Chelsea 272 Series Power Take-Off, part number 272XAAJP-G5XK or 272XAAJPG5XK, is a 6-bolt hot-shift PTO built for medium-duty work in towing and recovery, aerial, construction, and water truck applications. It ships with a 1-1/4" round output shaft with a 5/16" key and supports pneumatic or PowerShift (pneumatic/hydraulic) engagement. Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated 201-300 lb-ft (401-500 Nm). At 1,000 RPM the shaft delivers 57 HP (43 kW). The 272 Series consolidates the older 230, 231, 236, 238, 270, and 271 Series into a single platform compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Available from Pro Gear and Transmission. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting for direct transmission attachment
Pneumatic and PowerShift (pneumatic/hydraulic) shift options with integral air control valve
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent rating 201-300 lb-ft (401-500 Nm)
Shaft output: 57 HP (43 kW) at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Consolidates and replaces Chelsea 230, 231, 236, 238, 270, and 271 Series PTOs
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- 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
- Output Power: 56+ HP (41-50 kW)
- Shaft Power at 500 RPM: 29 HP (21 kW)
- Shaft Power at 1,000 RPM: 57 HP (43 kW)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other manufacturers
Additional Information
The Chelsea 272 Series consolidates six earlier Chelsea PTO series - the 230, 231, 236, 238, 270, and 271 - into a single medium-duty platform. The series offers nine speed ratios and eighteen shift options, giving it broad fitment flexibility across transmission types. Direct-mount configurations are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart Start option, designed for high-torque start-up conditions where initial load is elevated. Rotatable flanges allow installation flexibility at the mounting face. The 272 Series is used in aerial lift, towing and recovery, construction equipment, and water truck markets. For application-specific torque ratings, consult the Chelsea 272 Series application pages or call Pro Gear and Transmission to confirm the right configuration for your truck and transmission.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
