Description
The Chelsea 272DCKUP-B3XD or 272DCKUPB3XD is a 272 Series medium-duty hot shift power take-off built for demanding mobile equipment applications. It mounts via a 6-bolt pattern and shifts via pneumatic or PowerShift (pneumatic/hydraulic) actuation, including an integral air control valve. The output shaft is a 1-1/4″ round shaft with a 5/16″ key. Intermittent torque capacity runs 201-300 lb-ft (401-500 Nm); the 272 Series is rated for continuous-duty torque up to 300 lb-ft, though actual ratings vary by application. Output power reaches 56+ HP (41-50 kW), with shaft power of 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM platforms. 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
Intermittent torque: 201-300 lb-ft (401-500 Nm); continuous torque rated up to 300 lb-ft
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: Up to 300 lb-ft / 407 Nm (verify on application pages for actual 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, PowerShift (Pneumatic/Hydraulic)
- Shaft Power: 29 HP at 500 RPM; 57 HP at 1,000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series consolidates and replaces the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot shift PTOs into a single, more versatile platform. The series offers nine speed ratios, 18 shift configurations, and a range of direct-mount and driveshaft output options. Direct-mount configurations are available with optional Wet-Spline technology for extended PTO and pump shaft life. Driveshaft output configurations can include the Smart-Start feature, designed for high-torque start-up conditions where engagement loads are elevated. Flanges on the 272 Series are rotatable to aid installation in tight spaces. Typical markets include aerial equipment, construction equipment, water trucks, towing and recovery, and other mobile applications.
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
