The Chelsea 272 Series Power Take-Off Assembly, part number 272XAAJP-B5RK or 272XAAJPB5RK, is a 6-bolt hot-shift PTO built for medium-duty commercial applications. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and hydraulic (PowerShift) engagement. Continuous torque capability reaches 300 lb-ft (407 Nm), with intermittent torque rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP, with shaft power measured at 57 HP at 1,000 RPM. The 272 Series consolidates earlier Chelsea PTO lines and is suited for aerial, towing and recovery, construction, and water truck applications across a wide range of transmissions including Allison, Eaton/Fuller, Volvo/Mack, Ford, Aisin, and RAM. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic or hydraulic (PowerShift) hot-shift engagement with integral air control valve
Continuous torque rating: 300 lb-ft (407 Nm); intermittent torque: 201-300 lb-ft (401-500 Nm)
Shaft power: 57 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Volvo/Mack, Ford, Aisin, 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 or Hydraulic (PowerShift)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Ford, Aisin, RAM, and Other
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
