The Chelsea 272 Series Power Take-Off, part number 272ZPJWX-P3BD or 272ZPJWXP3BD, is a 6-bolt hot shift PTO designed for medium-duty work trucks across towing and recovery, aerial, construction, and water truck applications. Shift type is pneumatic or PowerShift (pneumatic/hydraulic), and the unit ships with an integral air control valve. Output is through a 1-1/4" round shaft with a 5/16" key. Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated 201-300 lb-ft (401-500 Nm). Shaft power output is 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. Call us to confirm proper fit for your specific transmission and truck configuration.
Features
6-bolt mounting with hot shift operation via pneumatic or PowerShift (pneumatic/hydraulic) actuation
Integral air control valve included with the unit
1-1/4" round output shaft with 5/16" key
Continuous torque rating: 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; output power class 56+ HP (41-50 kW)
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) - Check application pages for actual torque ratings
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Output Power: 56+ HP (41-50 kW)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Transmission Compatibility: 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 into a single versatile platform. The series offers nine speed ratios and eighteen shift options. Wet-Spline technology is available on direct-mount configurations to extend PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start option for high-torque start-up conditions. Rotatable flanges allow flexible installation positioning. Typical markets served include aerial, construction equipment, towing and recovery, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
