The Chelsea 272 Series Power Take-Off Assembly, part number 272XMAJX-V3XD or 272XMAJXV3XD, is a hot-shift 6-bolt PTO designed for medium-duty applications across towing and recovery, aerial, construction, and water truck markets. It mounts to transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. The 1-1/4" round output shaft uses a 5/16" key, and shift options include pneumatic (air) and PowerShift (pneumatic/hydraulic). Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated in the 201-300 lb-ft range. Output power exceeds 56 HP. The 272 Series consolidates multiple prior Chelsea PTO series into one platform, with nine speed ratios and eighteen shift options available across the family. Call us to confirm proper fit for your application.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (air shift) and PowerShift (pneumatic/hydraulic) shift options
Continuous torque rated up to 300 lb-ft (407 Nm) across the 272 Series
Intermittent torque range: 201-300 lb-ft (401-500 Nm)
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: Up to 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
- Shift Type: Pneumatic (Air Shift) / PowerShift (Pneumatic/Hydraulic)
- Output Power: 56+ HP (41-50 kW)
- Shaft Power at 500 RPM: 29 HP (21 kW); at 1000 RPM: 57 HP (43 kW)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other manufacturers
- Dimensions (H x W x L): 15.75" x 12.5" x 14"
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 PTO series into a single platform. The series offers nine speed ratios and eighteen shift options, and is used in aerial, construction equipment, towing and recovery, water truck, defense, material handling, and water drilling applications. Direct-mount configurations are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations within the series include Smart-Start for high-torque startup conditions. The integral air control valve is included with the unit. Part number 272XMAJX-V3XD is also referenced as 272XMAJXV3XD.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
