The Chelsea 272 Series Power Take-Off Assembly, part number 272XMAJX-P3RK or 272XMAJXP3RK, is a hot-shift, 6-bolt PTO built for medium-duty applications. It features a 1-1/4" round output shaft with a 5/16" key and supports pneumatic or PowerShift (pneumatic/hydraulic) engagement. The 272 Series consolidates several earlier Chelsea PTO lines into a single platform with continuous torque capability up to 300 lb-ft and intermittent torque rated at 201-300 lb-ft. Shaft power output reaches 57 HP at 1,000 RPM. Compatible with transmissions from Ford, Allison, Eaton/Fuller, Aisin, Volvo/Mack, and RAM, this PTO serves aerial, construction, towing and recovery, and water truck markets. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting configuration for medium-duty transmission applications
1-1/4" round output shaft with 5/16" keyway
Pneumatic or PowerShift (pneumatic/hydraulic) engagement
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Shaft power output: 57 HP at 1,000 RPM
Compatible with Ford, Allison, Eaton/Fuller, 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) - verify actual rating on application pages
- 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)
- Transmission Compatibility: Ford, Allison, Eaton/Fuller, Aisin, Volvo/Mack, RAM, and other manufacturers
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Series into one medium-duty hot-shift PTO platform. The series offers nine speed ratios and eighteen shift options. Direct-mount configurations include an optional Wet-Spline design for extended PTO and pump shaft service life. Driveshaft output configurations are available with the Smart-Start feature to handle high-torque start-up conditions. The integral air control valve comes standard. Common markets include aerial lifts, towing and recovery, construction equipment, and water trucks. This PTO assembly carries the part number 272XMAJX-P3RK, also referenced as 272XMAJXP3RK.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
