The Chelsea 272 Series power take-off assembly, part number 272MAAJP-A3XD or 272MAAJPA3XD, is a 6-bolt hot shift PTO built for medium-duty applications in towing and recovery, aerial, construction, and water truck service. The 272 Series supports intermittent torque ratings from 201 to 300 lb-ft (401 to 500 Nm) and is available with either pneumatic or hydraulic shift. It features an integral air control valve and rotatable flanges for flexible installation. Output shaft options include a 1-inch round shaft with 1/4-inch key or a 1-1/4-inch round shaft with 5/16-inch key. The series consolidates the 230, 231, 236, 238, 270, and 271 series lines into a single platform offering nine speed ratios and eighteen shift configurations. Call us to confirm the correct fitment for your transmission and application.
Features
6-bolt mounting configuration for medium-duty hot shift PTO applications
Intermittent torque rating: 201 to 300 lb-ft (401 to 500 Nm)
Available with pneumatic (air) shift or hydraulic shift; includes integral air control valve
Rotatable flanges allow flexible installation orientation
Output shaft options: 1-inch round with 1/4-inch key, or 1-1/4-inch round with 5/16-inch key
Consolidates Chelsea 230, 231, 236, 238, 270, and 271 series into one platform with nine speed ratios and eighteen shift options
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic (Air) or Hydraulic
- Intermittent Torque: 201 to 300 lb-ft (401 to 500 Nm)
- Output Power: 56+ HP (41 to 50 kW)
- Output Shaft Options: 1-inch round shaft with 1/4-inch key; 1-1/4-inch round shaft with 5/16-inch key
- Speed Ratios Available: 9
- Shift Configurations Available: 18
- Lubricant Codes: X = No Pressure Lube, P = Pressure Lube, W = Wet Spline
- Dimensions (H x W x L): 15 x 12 x 14 in.
Additional Information
The Chelsea 272 Series consolidates six earlier PTO lines (230, 231, 236, 238, 270, and 271 series) into a single medium-duty hot shift platform. Direct-mount output options are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart-Start feature, designed for high-torque start-up conditions. Common application markets include aerial equipment, construction, towing and recovery, water trucks, defense, and material handling. The 272MAAJP-A3XD is sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission and vehicle.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
