Description
The Chelsea 272 Series Power Take-Off Assembly, part number 272XAAJP-K3XD or 272XAAJPK3XD, is a medium-duty hot-shift PTO built on a 6-bolt mounting configuration. It uses a pneumatic or PowerShift (pneumatic/hydraulic) engagement mechanism and delivers power through a 1-1/4″ round output shaft with a 5/16″ key. Intermittent torque rating for the 272 Series runs 201-300 lb-ft (401-500 Nm); continuous torque for the series reaches up to 300 lb-ft (407 Nm) – verify actual ratings on Chelsea application pages for your specific installation. Shaft power output is rated at 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmission families include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. Call us to confirm proper fit for your application.
Features
6-bolt mounting configuration for medium-duty hot-shift applications
Pneumatic or PowerShift (pneumatic/hydraulic) shift with integral air control valve
1-1/4″ round output shaft with 5/16″ key
Intermittent torque rating: 201-300 lb-ft (401-500 Nm); series continuous torque up to 300 lb-ft (407 Nm)
Shaft power: 29 HP at 500 RPM / 57 HP at 1,000 RPM
Wet-Spline option for extended PTO and pump shaft life; Smart Start option for high-torque start-up conditions
Rotatable flanges; compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic / PowerShift (Pneumatic or Hydraulic)
- Output Shaft Type: 1-1/4″ Round with 5/16″ Key
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque (series): up to 300 lb-ft (407 Nm) – check application pages for actual rating
- Output Power: 56+ HP (41-50 kW)
- Shaft Power at 500 RPM: 29 HP (21 kW)
- Shaft Power at 1,000 RPM: 57 HP (43 kW)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others







