The Chelsea 272 Series Power Take-Off Assembly, part number 272GCHVP-B3BD or 272GCHVPB3BD, is a 6-bolt hot-shift PTO designed for medium-duty applications including aerial, construction, towing and recovery, and water truck service. It ships with a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic (air shift) and PowerShift (pneumatic/hydraulic) engagement. Continuous torque rating for the 272 Series reaches 300 lb-ft (407 Nm); intermittent torque spans 201-300 lb-ft (401-500 Nm). Shaft power output is rated at 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your specific transmission and application.
Features
Chelsea 272 Series 6-bolt hot-shift PTO assembly
1-1/4" round output shaft with 5/16" key
Pneumatic (air shift) and PowerShift (pneumatic/hydraulic) engagement options
Intermittent torque: 201-300 lb-ft (401-500 Nm); continuous torque: 300 lb-ft (407 Nm)
Shaft power: 29 HP at 500 RPM, 57 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
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
- Shift Type: Pneumatic (Air Shift) / PowerShift (Pneumatic/Hydraulic)
- 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
- Compatible Transmission Manufacturers: 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 PTOs into a single, more capable platform. The series features rotatable flanges for flexible mounting, an integral air control valve, and an optional Wet-Spline output for extended PTO and pump shaft service life. A Smart-Start option is available for high-torque start-up conditions. The 272 Series offers nine speed ratios and eighteen shift configurations, making it adaptable across a wide range of medium-duty truck and equipment builds. Typical markets include aerial lift, construction equipment, towing and recovery, water trucks, and defense/material handling applications. If you need help matching this part number to your transmission model or application, give us a call.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
