The Chelsea 272RDKUP-B3SD or 272RDKUPB3SD is a 272 Series 6-bolt hot shift power take-off designed for medium-duty applications across towing and recovery, aerial, construction, and water truck equipment. This unit mounts with a 6-bolt pattern and uses pneumatic or hydraulic (PowerShift) engagement. The output shaft is a 1-1/4" round with a 5/16" key. Intermittent torque capacity runs 201-300 lb-ft (401-500 Nm), and the series is rated for continuous-duty torque up to 300 lb-ft. Output power reaches 56+ HP (41-50 kW), with shaft power rated at 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Ford, Aisin, and RAM applications. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for direct transmission installation
Pneumatic air shift or hydraulic (PowerShift) engagement with integral air control valve
1-1/4" round output shaft with 5/16" key
Continuous-duty torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Wet-spline option available for extended PTO and pump shaft service life
Smart-Start option for high-torque start-up conditions
Rotatable flanges for flexible installation orientation
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
- Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
- Output Power: 56+ HP (41-50 kW)
- Shaft Power at 500 RPM: 29 HP (21 kW)
- Shaft Power at 1,000 RPM: 57 HP (43 kW)
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Ford, Aisin, RAM, and other applications
Additional Information
