The Chelsea 272 Series Power Take-Off Assembly, part number 272KKJKX-A5RB or 272KKJKXA5RB, is a medium-duty hot-shift PTO built on Chelsea's 272 platform, which consolidates several earlier series into one versatile unit. It mounts via a 6-bolt pattern and shifts pneumatically or through a hydraulic/PowerShift arrangement, with an integral air control valve included. The output shaft is a 1-1/4" round with a 5/16" key. The 272 Series carries a continuous torque rating up to 300 lb-ft and an intermittent torque range of 201-300 lb-ft (401-500 Nm). Transmission compatibility spans Ford, Allison, Aisin, Volvo/Mack, Eaton/Fuller, RAM, and select other manufacturers. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (air) shift or hydraulic/PowerShift operation with integral air control valve
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power 56+ HP; shaft power rated at 57 HP at 1,000 RPM
Compatible with Ford, Allison, Aisin, Volvo/Mack, Eaton/Fuller, RAM, and other transmissions
Tech Specs
- 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
- 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, Aisin, Volvo/Mack, Eaton/Fuller, RAM, Other
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
