The Chelsea 272 Series Power Take-Off Assembly, part number 272XKAJX-P3BD or 272XKAJXP3BD, is a 6-bolt hot-shift PTO designed for medium-duty truck and equipment applications. It mounts with a 6-bolt pattern and delivers up to 300 lb-ft of continuous torque, with intermittent torque rated at 201-300 lb-ft (401-500 Nm). The output shaft is a 1-1/4" round shaft with a 5/16" key. Shift is pneumatic or PowerShift (pneumatic/hydraulic). Output power is rated at 56+ HP (41-50 kW), with shaft power measuring 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others. The 272 Series is pressure-lubricated (P designation) and consolidates several earlier Chelsea PTO series into one flexible platform used in towing and recovery, aerial, construction, and water truck applications. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility across Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Pneumatic or PowerShift (pneumatic/hydraulic) shift with integral air control valve
Output power rated at 56+ HP (41-50 kW); 57 HP at 1,000 RPM
Pressure lubrication (P) designation for extended service life
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, PowerShift (Pneumatic/Hydraulic)
- Lubrication: Pressure Lube
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other applications
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
