The Chelsea 272ACKUP-G5RF or 272ACKUPG5RF is a 272 Series hot-shift power take-off assembly built on a 6-bolt mounting pattern. It delivers continuous torque up to 300 lb-ft (407 Nm) and handles intermittent loads in the 201-300 lb-ft (401-500 Nm) range. The output shaft is a 1-1/4" round with a 5/16" key, and shift options include pneumatic and PowerShift (pneumatic/hydraulic). Output power reaches 56+ HP (41-50 kW), with shaft power rated at 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmissions span Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. The 272 Series consolidates several earlier Chelsea medium-duty PTO lines into one platform, making it a versatile fit across towing and recovery, aerial, construction, and water truck work. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic and PowerShift (pneumatic/hydraulic) shift options
Continuous torque up to 300 lb-ft (407 Nm); intermittent range 201-300 lb-ft (401-500 Nm)
Output power 56+ HP (41-50 kW); 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: 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 at 500 RPM; 57 HP at 1,000 RPM
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
