The Chelsea 272 Series Power Take-Off Assembly, part number 272XKJWX-A3BD or 272XKJWXA3BD, is a medium-duty hot-shift PTO 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 (air shift) and hydraulic PowerShift engagement. Continuous torque capability reaches 300 lb-ft (407 Nm), with intermittent torque rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP (41-50 kW). The 272 Series consolidates multiple prior Chelsea medium-duty PTO lines into one platform, covering transmissions from 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 (Air Shift) / PowerShift (Pneumatic or Hydraulic)
- Shaft Power at 500 RPM: 29 HP (21 kW); at 1000 RPM: 57 HP (43 kW)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty PTO lines into a single platform. The series offers nine speed ratios and eighteen shift options. Direct-mount configurations are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start option, designed for high-torque start-up conditions. The integral air control valve is included. Typical application markets include aerial work, towing and recovery, construction equipment, and water trucks.
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