The Chelsea 272 Series Power Take-Off, part number 272LMFNX-A5RK or 272LMFNXA5RK, is a 6-bolt, medium-duty hot-shift PTO designed for demanding mobile applications. It mounts via a 6-bolt pattern and delivers a 1-1/4" round output shaft with a 5/16" key. Shift is pneumatic (PowerShift pneumatic/hydraulic), and the unit carries a continuous torque rating of 300 lb-ft (407 Nm), with intermittent torque rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP, with shaft power measured at 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Typical applications cover aerial, towing and recovery, construction equipment, and water trucks. Call us to confirm proper fit for your 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 rating: 300 lb-ft (407 Nm)
Intermittent torque rating: 201-300 lb-ft (401-500 Nm)
Output power exceeds 56 HP; 57 HP shaft power at 1,000 RPM
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
- Shift Type: Pneumatic / PowerShift (Pneumatic/Hydraulic)
- 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)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series consolidates multiple earlier Chelsea medium-duty PTO lines - including the 230, 231, 236, 238, 270, and 271 series - into a single, updated platform. The series offers nine speed ratios and eighteen shift options. Direct-mount configurations include an optional Wet-Spline interface for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart Start option, which manages high-torque start-up loads. An integral air control valve is included. The 272 Series is suited for aerial, towing and recovery, construction equipment, water truck, and material handling applications.Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
