The Chelsea 272 Series Power Take-Off Assembly, part number 272XSJWX-P5RK or 272XSJWXP5RK, is a 6-bolt hot shift PTO designed for medium-duty applications in aerial, construction, towing and recovery, and water truck service. It ships with a 1-1/4" round output shaft with a 5/16" key and supports pneumatic or PowerShift (pneumatic/hydraulic) engagement. The 272 Series carries a continuous torque rating up to 300 lb-ft (407 Nm) and an intermittent torque rating in the 201-300 lb-ft range. At 1,000 RPM the series delivers up to 57 HP (43 kW). The 272 consolidates several earlier Chelsea series into one versatile platform compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others. Call us to confirm proper fit for your specific transmission.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) shift options
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent range 201-300 lb-ft (401-500 Nm)
Shaft power: 29 HP (21 kW) at 500 RPM; 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
- 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)
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Series into a single versatile medium-duty 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 life. Driveshaft output configurations include the Smart-Start option, which handles high-torque start-up conditions. The integral air control valve is included with all shift configurations. Rotatable flanges allow flexible installation positioning. Applications span aerial work, construction equipment, towing and recovery, water trucks, material handling, and defense. A genuine Chelsea part, sold by Pro Gear and Transmission. Not sure this is your part? Give us a call.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
