The Chelsea 272XKAJP-B5XD is a 272 Series Hot Shift Power Take-Off Assembly built on a 6-bolt mounting pattern. It features a 1-1/4" round output shaft with a 5/16" keyway and supports up to 300 lb-ft of continuous torque (201-300 lb-ft intermittent). Shift type is pneumatic (PowerShift), and the series includes an integral air control valve as a standard feature. The 272 Series consolidates earlier Chelsea medium-duty PTO lines, including the 230, 231, 236, 238, 270, and 271, into one platform. Compatible transmissions span a wide range, including Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (PowerShift) shift with integral air control valve
Continuous torque rating up to 300 lb-ft (407 Nm); 201-300 lb-ft intermittent
Output power rated at 56+ HP (41-50 kW); shaft power at 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 at 500 RPM; 57 HP at 1,000 RPM (21 kW at 500 RPM; 43 kW at 1,000 RPM)
- Compatible Transmission Manufacturers: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
Additional Information
The Chelsea 272 Series consolidates several earlier medium-duty hot shift PTO lines, including the 230, 231, 236, 238, 270, and 271 Series, into a single updated platform. The series is designed for continuous-duty operation and is used across Aerial, Construction Equipment, Towing and Recovery, and Water Truck applications. Direct-mount configurations in this series offer an optional Wet-Spline feature for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start option, engineered for high-torque start-up conditions. Rotatable flanges allow flexible installation orientation. Part number 272XKAJP-B5XD is also referenced as SP272XKAJP-B5XD in some catalog systems.Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
