The Chelsea 272 Series Power Take-Off Assembly, part number 272LSFNX-P3XD or 272LSFNXP3XD, is a 6-bolt hot-shift PTO designed for medium-duty applications including aerial, construction, water truck, and towing and recovery 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), with intermittent ratings in the 201-300 lb-ft (401-500 Nm) range. Output power exceeds 56 HP at the appropriate shaft speed. Compatible transmission families include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your transmission and application.
Features
Chelsea 272 Series 6-bolt hot-shift PTO Assembly
1-1/4" round output shaft with 5/16" key
Pneumatic shift or PowerShift (pneumatic/hydraulic) engagement
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent 201-300 lb-ft (401-500 Nm)
Output power 56+ HP; shaft power 57 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Includes integral air control valve; rotatable flanges for flexible installation
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 or PowerShift (pneumatic/hydraulic)
- Output Power: 56+ HP (41-50 kW)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Compatible Transmissions: 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, updated platform. The series offers nine speed ratios and eighteen shift options, with direct-mount and driveshaft output configurations. The optional Wet-Spline technology extends PTO and pump shaft service life on direct-mount setups, while the Smart-Start feature handles high-torque start-up conditions on driveshaft outputs. Rotatable flanges allow flexible mounting orientation to suit a wide range of chassis and body configurations. Typical markets include aerial work platforms, towing and recovery, construction equipment, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
