The Chelsea 272 Series Power Take-Off Assembly, part number 272RMKUP-B3XD or 272RMKUPB3XD, is a 6-bolt hot-shift PTO designed for medium-duty truck applications. It mounts to transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM platforms. The output shaft is a 1-1/4" round shaft with a 5/16" key. Shift is pneumatic or PowerShift (pneumatic/hydraulic), and the unit includes an integral air control valve. The 272 Series supports continuous torque up to 300 lb-ft and intermittent torque in the 201-300 lb-ft range. Output power runs 56+ HP at the rated RPM range. Common applications include towing and recovery, aerial work, construction equipment, and water trucks. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting for compatibility across Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) shift actuation with integral air control valve
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power 56+ HP; shaft power at 1,000 RPM: 57 HP (43 kW)
Suited for aerial, towing and recovery, construction equipment, and water truck applications
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 or 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, 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.
