The Chelsea 272 Series Power Take-Off Assembly, part number 272ABKUP-B5XD or 272ABKUPB5XD, is a 6-bolt hot-shift PTO engineered for medium-duty commercial truck applications. It mounts with a 6-bolt pattern and delivers a 1-1/4" round output shaft with a 5/16" key. Shift options include pneumatic (air shift) and PowerShift (pneumatic/hydraulic). Continuous torque capability reaches 300 lb-ft (407 Nm), with intermittent ratings in the 201-300 lb-ft (401-500 Nm) range. Output power exceeds 56 HP (41-50 kW). Compatible transmission platforms include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt hot-shift mounting pattern for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (air shift) and PowerShift (pneumatic/hydraulic) shift options
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power 56+ HP (41-50 kW); shaft power 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 (Air Shift) and PowerShift (Pneumatic/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
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
