The Chelsea 272 Series Power Take-Off, part number 272XBAJP-B3XR or 272XBAJPB3XR, is a 6-bolt hot shift PTO designed for medium-duty applications including aerial work, towing and recovery, construction equipment, and water trucks. It mounts with a 6-bolt pattern and shifts via pneumatic air or PowerShift pneumatic/hydraulic actuation, with an integral air control valve included. The 1-1/4" round output shaft uses a 5/16" key drive. Continuous torque capacity 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 consolidates multiple prior Chelsea medium-duty PTO lines into one platform with nine speed ratios and 18 shift options. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
Pneumatic air shift and PowerShift (pneumatic/hydraulic) options with integral air control valve
1-1/4" round output shaft with 5/16" key drive
Continuous torque rating: 300 lb-ft (407 Nm); intermittent torque: 201-300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW)
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other transmission manufacturers
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 (Air Shift); PowerShift (Pneumatic/Hydraulic)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other manufacturers
Additional Information
The Chelsea 272 Series consolidates several prior medium-duty PTO lines, including the 230, 231, 236, 238, 270, and 271 Series, into a single platform. The series offers nine speed ratios and 18 shift configurations. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft outputs include the Smart Start option, designed for high-torque start-up conditions. Rotatable flanges allow flexible installation positioning. Typical market applications include aerial equipment, construction machinery, towing and recovery, water trucks, and material handling. Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
