The Chelsea 272GAHVP-G3RK or 272GAHVPG3RK is a 272 Series hot-shift power take-off assembly built on a 6-bolt mount. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and hydraulic (PowerShift) engagement, with an integral air control valve included. Continuous torque capability 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). Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting for broad transmission compatibility across Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM platforms
1-1/4" round output shaft with 5/16" key
Pneumatic (air) shift and hydraulic PowerShift options, with integral air control valve
Continuous torque rating: 300 lb-ft (407 Nm); intermittent: 201-300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW); shaft power at 1,000 RPM: 57 HP (43 kW)
Suited for aerial, towing and recovery, construction, and water truck applications
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 shaft with 5/16" key
- Output Power: 56+ HP (41-50 kW)
- Shift Type: Pneumatic (air shift) or PowerShift (pneumatic/hydraulic)
- 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, and other manufacturers
Additional Information
The Chelsea 272 Series consolidates several earlier Chelsea medium-duty hot-shift PTO lines - including the 230, 231, 236, 238, 270, and 271 Series - into a single, more versatile platform. The 272 offers nine speed ratios and eighteen shift options. The series includes a Wet-Spline option on direct-mount configurations for extended PTO and pump shaft service life, and a Smart-Start option designed for high-torque engagement conditions. Rotatable flanges allow flexible installation positioning. Typical markets include aerial lifts, 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.
