The Chelsea 272KKJKX-A3RK is a 272 Series hot-shift power take-off assembly built on a 6-bolt mounting pattern. It accepts pneumatic or PowerShift (pneumatic/hydraulic) actuation and features a 1-1/4" round output shaft with a 5/16" key. Continuous torque capability reaches 300 lb-ft (407 Nm), with intermittent ratings in the 201-300 lb-ft (401-500 Nm) range. Output power exceeds 56 HP, with shaft power measured at 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmissions span Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM applications. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
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)
Shaft power: 29 HP at 500 RPM, 57 HP 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: 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 1,000 RPM
- Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series consolidates several earlier medium-duty hot-shift PTO lines - including the 230, 231, 236, 238, 270, and 271 series - into a single, versatile platform. The 272 Series offers nine speed ratios and eighteen shift options. The series is designed for use in towing and recovery, aerial, construction equipment, and water truck applications. An integral air control valve is included. The rotatable flange design eases installation across a range of chassis configurations.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
