The Chelsea 272RCKUP-B3RK or 272RCKUPB3RK is a 272 Series hot-shift power take-off assembly using a 6-bolt mounting pattern. Shift type is pneumatic or PowerShift (pneumatic/hydraulic), making it compatible with a broad range of transmission brands including Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. The output shaft is a 1-1/4" round with a 5/16" key. Continuous torque capacity reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP at higher shaft speeds. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
Pneumatic or PowerShift (pneumatic/hydraulic) shift type
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm)
Intermittent torque range: 201-300 lb-ft (401-500 Nm)
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Continuous Torque: 300 lb-ft / 407 Nm (check application pages for actual torque ratings)
- Intermittent Torque: 201-300 lb-ft / 401-500 Nm
- Output Power: 56+ HP / 41-50 kW
- Shaft Power at 500 RPM: 29 HP / 21 kW; at 1000 RPM: 57 HP / 43 kW
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
