The Chelsea 272XAAJP-B3XD or 272XAAJPB3XD is a 6-bolt hot shift power take-off assembly from the Chelsea 272 Series, designed for medium-duty applications across towing and recovery, aerial, construction, and water truck markets. It shifts pneumatically via an integral air control valve and supports a 1-1/4" round output shaft with a 5/16" key. Continuous torque capacity reaches 300 lb-ft (407 Nm), with intermittent ratings in the 201-300 lb-ft range. Output power exceeds 56 HP at the top of the shaft power curve. The 272 Series consolidates multiple earlier Chelsea PTO lines, and this unit is compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting configuration for direct transmission installation
Pneumatic (air) shift with integral air control valve included
1-1/4" round output shaft with 5/16" key
Continuous torque capacity up to 300 lb-ft (407 Nm); intermittent rating 201-300 lb-ft (401-500 Nm)
Output power 56+ HP; shaft power rated at 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: 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 / PowerShift (Pneumatic or Hydraulic)
- 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, and other manufacturers
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
