The Chelsea 272 Series Power Take-Off Assembly, part number 272XAAJX-V3BD or 272XAAJXV3BD, is a 6-bolt hot shift PTO designed for medium-duty truck and equipment applications. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. Intermittent torque capacity runs 201-300 lb-ft (401-500 Nm), with continuous torque up to 300 lb-ft (407 Nm) at rated conditions. Shaft power output reaches 57 HP at 1,000 RPM. The 272 Series is compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Common applications include aerial lifts, towing and recovery, water trucks, and construction equipment. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting configuration for medium-duty transmission applications
1-1/4" round output shaft with 5/16" key
Pneumatic and PowerShift (pneumatic/hydraulic) shift options
Intermittent torque: 201-300 lb-ft (401-500 Nm)
Continuous torque rated up to 300 lb-ft (407 Nm) - verify actual rating on application pages
Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque: Up to 300 lb-ft / 407 Nm (verify actual rating on application pages)
- 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; PowerShift (Pneumatic/Hydraulic)
- Compatible Transmission Manufacturers: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other select applications
Additional Information
The Chelsea 272 Series consolidates and replaces the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot shift PTOs into a single, more versatile platform. The series offers nine speed ratios, 18 shift options, and a range of direct-mount and driveshaft output configurations. Direct-mount configurations may include an optional Wet-Spline feature for extended PTO and pump shaft service life. Driveshaft output variants are available with the Smart-Start option, designed for high-torque engagement conditions. The integral air control valve is included. Typical markets for the 272 Series include aerial, towing and recovery, water trucks, construction equipment, and material handling. For confirmation that 272XAAJX-V3BD is the correct configuration for your transmission and driven equipment, contact Pro Gear and Transmission directly.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
