The Chelsea 272 Series PTO Assembly, part number 272GAHVP-G3RB or 272GAHVPG3RB, is a 6-bolt hot shift power take-off engineered for medium-duty applications including aerial work, towing and recovery, construction equipment, and water trucks. It mounts to transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. The output shaft is a 1-1/4" round shaft with a 5/16" key. Intermittent torque rating runs 201-300 lb-ft (401-500 Nm), with continuous torque up to 300 lb-ft (407 Nm) - verify actual ratings on the application page for your specific setup. Shift is pneumatic or PowerShift (pneumatic/hydraulic). Output power reaches 56+ HP (41-50 kW), with shaft power rated at 57 HP at 1,000 RPM. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting for broad transmission compatibility including Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM
Pneumatic or PowerShift (pneumatic/hydraulic) shift operation with integral air control valve
1-1/4" round output shaft with 5/16" key
Intermittent torque: 201-300 lb-ft (401-500 Nm); continuous torque rated up to 300 lb-ft (407 Nm)
Output power: 56+ HP (41-50 kW); 57 HP at 1,000 RPM
Suited for aerial, towing and recovery, construction, and water truck service
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque: Up to 300 lb-ft (407 Nm) - check application pages for actual 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, and others
Additional Information
The Chelsea 272 Series consolidates several earlier medium-duty PTO lines - the 230, 231, 236, 238, 270, and 271 series - into a single platform. The 272 offers nine speed ratios and eighteen shift options, making it adaptable across a wide range of direct-mount and driveshaft output configurations. Direct-mount variants are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations can include the Smart Start option, designed for high-torque start-up conditions. Rotatable flanges allow installation flexibility. The 272 Series is used across aerial, construction, towing and recovery, water truck, defense, material handling, and water drilling applications.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
