The Chelsea 272 Series Power Take-Off Assembly, part number 272XAAJX-P3XD or 272XAAJXP3XD, is a 6-bolt hot-shift PTO designed for medium-duty applications. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. Continuous torque capability reaches 300 lb-ft (407 Nm), with intermittent ratings from 201 to 300 lb-ft (401 to 500 Nm). Output power runs 56+ HP (41-50 kW), and shaft power at 1,000 RPM is rated at 57 HP (43 kW). The 272 Series is compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your application.
Features
6-bolt mounting configuration for medium-duty hot-shift applications
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) engagement
Continuous torque up to 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
Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and 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 or PowerShift (Pneumatic/Hydraulic)
- 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
Additional Information
The Chelsea 272 Series consolidates multiple earlier PTO series - including the 230, 231, 236, 238, 270, and 271 - into a single, versatile platform. The 272 Series offers nine speed ratios and eighteen shift options. The direct mount configurations include an optional Wet-Spline design for extended PTO and pump shaft service life. Driveshaft output configurations include Smart-Start for high-torque start-up conditions. The integral air control valve is included. Common markets served 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.
