The Chelsea 272 Series Power Take-Off, part number 272ADKUP-K5RK or 272ADKUPK5RK, is a 6-bolt hot shift PTO designed for medium-duty applications across towing and recovery, aerial, construction, and water truck work. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP (41-50 kW). The 272 Series is compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM platforms. Call us to confirm proper fit for your specific transmission.
Features
6-bolt mounting configuration for medium-duty applications
1-1/4" round output shaft with 5/16" key
Pneumatic and PowerShift (pneumatic/hydraulic) shift options
Continuous torque up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power rated at 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
- 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 1000 RPM
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
Additional Information
The Chelsea 272 Series consolidates several earlier medium-duty PTO lines, including the 230, 231, 236, 238, 270, and 271 Series, into a single versatile platform. The series offers nine speed ratios and eighteen shift options. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft outputs include the Smart-Start feature designed to handle high-torque start-up conditions. The integral air control valve is included. Common applications include aerial equipment, construction machinery, water trucks, and towing and recovery vehicles.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
