The Chelsea 272 Series Power Take-Off Assembly, part number 272XKAJX-P3RY or 272XKAJXP3RY, is a 6-bolt hot-shift PTO designed for medium-duty work truck applications including aerial, construction, towing and recovery, and water truck equipment. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic (air shift) and hydraulic PowerShift engagement. The 272 Series carries a continuous torque rating up to 300 lb-ft and an intermittent torque rating of 201-300 lb-ft. Output power reaches 56+ HP, with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. The 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 broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (air shift) or hydraulic PowerShift engagement options
Continuous torque rating up to 300 lb-ft; intermittent torque 201-300 lb-ft
Output power of 56+ HP; 29 HP at 500 RPM, 57 HP at 1,000 RPM
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 (verify on application pages for actual ratings)
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Shift Type: Pneumatic (Air Shift) or Hydraulic PowerShift
- Output Power: 56+ HP (41-50 kW)
- 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 and replaces the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot-shift PTOs into a single platform. The series offers nine speed ratios and eighteen shift options. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft outputs include the Smart-Start feature for demanding high-torque start-up conditions. The integral air control valve is included. Typical markets served include aerial equipment, construction machinery, towing and recovery, and water trucks.Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
Equivalent PTOs:
Matched by full model number. Check the mounting, input gear and output against the unit you are replacing before you order. Look up any Chelsea, Muncie or Bezares number on our Muncie to Chelsea PTO cross reference.
