The Chelsea 272 Series Power Take-Off, part number 272RCKUP-B3RF or 272RCKUPB3RF, is a 6-bolt hot shift PTO designed for medium-duty work across towing and recovery, aerial, construction, and water truck applications. It features a 1-1/4" round output shaft with a 5/16" key and shifts via pneumatic or hydraulic (PowerShift) actuation. Continuous torque capability reaches 300 lb-ft (407 Nm), with intermittent torque rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP (41-50 kW), with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. The 272 Series consolidates earlier Chelsea PTO lines into a single, versatile platform. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting configuration for broad transmission compatibility
Pneumatic or hydraulic (PowerShift) hot shift actuation with integral air control valve
1-1/4" round output shaft with 5/16" key
Continuous torque rating 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); shaft power 29 HP at 500 RPM, 57 HP at 1,000 RPM
Compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others
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 Hydraulic (PowerShift)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other manufacturers
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Chelsea PTO lines into one platform. The series offers nine speed ratios and eighteen shift options. Direct-mount configurations are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start option, designed for high-torque start-up conditions. Rotatable flanges allow flexible installation orientation. Typical market applications include aerial equipment, construction machinery, towing and recovery vehicles, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
