The Chelsea 272 Series power take-off assembly, part number 272XKDAX-A5RB or 272XKDAXA5RB, is a 6-bolt hot-shift PTO designed for medium-duty applications. It mounts to transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. The 1-1/4" round output shaft includes a 5/16" key. Shift is pneumatic or PowerShift (pneumatic/hydraulic), with an integral air control valve included. The 272 Series carries a continuous torque rating up to 300 lb-ft and an intermittent rating of 201-300 lb-ft. Shaft power output at 1,000 RPM reaches 57 HP. Call us to confirm proper fit for your transmission and application.
Features
6-bolt hot-shift mounting pattern
1-1/4" round output shaft with 5/16" keyway
Pneumatic or PowerShift (pneumatic/hydraulic) engagement with integral air control valve
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) - see 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 and replaces the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot-shift PTOs. The series offers nine speed ratios and eighteen shift options. The rotatable flange design supports flexible installation, and a Smart-Start option is available for high-torque start-up conditions. Wet-Spline technology is offered on direct-mount configurations for extended PTO and pump shaft service life. Common applications include towing and recovery, aerial work platforms, construction equipment, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
