The Chelsea 272DDKUP-B3RK or 272DDKUPB3RK is a 272 Series Hot Shift power take-off built on a 6-bolt mounting pattern. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. Continuous torque capacity reaches 300 lb-ft (407 Nm), with intermittent torque rated at 201-300 lb-ft (401-500 Nm). Shaft power output is 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. The 272 Series consolidates earlier Chelsea medium-duty PTO lines and carries an integral air control valve. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
Pneumatic and PowerShift (pneumatic/hydraulic) shift options with integral air control valve
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
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
- Shift Type: Pneumatic / PowerShift (Pneumatic/Hydraulic)
- Output Power: 56+ HP (41-50 kW)
- 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
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 medium-duty PTO lines into a single versatile platform. The series offers nine speed ratios and eighteen shift options. Direct-mount configurations are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start option for high-torque start-up conditions. Typical applications include towing and recovery, aerial work platforms, construction equipment, and water trucks. Rotatable flanges allow flexible installation. Not sure this is the right PTO for your transmission? Give us a call.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
