The Chelsea 272 Series Power Take-Off Assembly, part number 272XBAJX-A5XD or 272XBAJXA5XD, is a 6-bolt hot-shift PTO with continuous torque capability up to 300 lb-ft (407 Nm). The output shaft is a 1-1/4" round shaft with a 5/16" key, and the unit supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. Output power reaches 56+ HP (41-50 kW), with shaft power ratings of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmission families include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. The 272 Series consolidates several earlier Chelsea medium-duty PTO lines into a single versatile platform suited for aerial, construction, towing and recovery, and water truck applications. Call us to confirm proper fit for your specific transmission.
Features
6-bolt mounting configuration for medium-duty hot-shift applications
Pneumatic and PowerShift (pneumatic/hydraulic) shift options with integral air control valve
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)
Shaft power: 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) - 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/Hydraulic)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
