The Chelsea 272XMAJX-A3BD is a 6-bolt hot-shift power take-off assembly from the Chelsea 272 Series, a medium-duty PTO platform that consolidates earlier 230, 231, 236, 238, 270, and 271 series units into a single design. It uses pneumatic or PowerShift (pneumatic/hydraulic) actuation and includes an integral air control valve. The output shaft is a 1-1/4" round shaft with a 5/16" key. Intermittent torque is rated at 201-300 lb-ft (401-500 Nm), with continuous torque up to 300 lb-ft (407 Nm) depending on application. Shaft power reaches 57 HP at 1,000 RPM. Compatible transmission families include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) actuation with integral air control valve
Continuous torque up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Shaft power rated at 57 HP (43 kW) 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) - 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 or 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 multiple earlier Chelsea medium-duty PTO series into a single platform. The 272 Series offers nine speed ratios and eighteen shift options. Application markets include towing and recovery, aerial equipment, construction equipment, and water trucks. Rotatable flanges allow flexible installation positioning. The Wet-Spline option (where specified) extends PTO and pump shaft service life, and the Smart-Start option supports high-torque start-up conditions.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
