The Chelsea 272XMJKX-A5XD 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" key and supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. The 272 Series carries a continuous torque rating of 300 lb-ft (407 Nm) and an intermittent torque range of 201-300 lb-ft (401-500 Nm), with shaft power output of 29 HP at 500 RPM and 57 HP at 1,000 RPM. This series consolidates the 230, 231, 236, 238, 270, and 271 PTO lines into a single platform and comes with an integral air control valve. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. Call us to confirm proper fit for your specific transmission and application.

• 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
• Output Power: 56+ HP (41-50 kW)
• Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
• 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, Other

The Chelsea 272 Series consolidates six previous PTO lines - the 230, 231, 236, 238, 270, and 271 - into a single medium-duty hot-shift platform. The series offers nine speed ratios and eighteen shift configurations, giving fleet and upfit engineers broad flexibility across aerial, construction, water truck, and towing and recovery applications. Wet-Spline technology is available on direct-mount configurations for extended PTO and pump shaft service life. Driveshaft output configurations support the Smart-Start option, designed for high-torque start-up conditions where load is present at engagement. The integral air control valve ships as part of the assembly. Rotatable flanges allow output orientation to suit the installation. Part number 272XMJKX-A5XD or 272XMJKXA5XD is sold by Pro Gear and Transmission. Call us to confirm the correct ratio, shift configuration, and transmission application before ordering.