The Chelsea 272 Series power take-off assembly, part number 272XMAJX-A3BV or 272XMAJXA3BV, is a 6-bolt hot shift PTO designed for medium-duty applications. The 272 Series supports up to 300 lb-ft of intermittent torque and delivers 56 or more horsepower output. Available in hydraulic or pneumatic shift configurations, the unit features an integral air control valve and rotatable flanges for flexible installation. Direct-mount outputs offer optional Wet-Spline technology to extend PTO and pump shaft life. 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. Common applications include aerial equipment, towing and recovery, construction equipment, and water trucks. Call us to confirm proper fit for your specific transmission and chassis.
Features
6-Bolt mounting configuration for medium-duty hot shift applications
Intermittent torque rating up to 300 lb-ft (401-500 Nm)
Output power of 56+ HP (41-50 kW)
Hydraulic or pneumatic (air) shift with integral air control valve
Rotatable flanges allow flexible installation orientation
Wet-Spline option available for extended PTO and pump shaft service life
Smart-Start option for high-torque start-up conditions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Hydraulic or Pneumatic (Air)
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Output Power: 56+ HP (41-50 kW)
- Output Shaft Options: 1" round shaft with 1/4" key; 1-1/4" round shaft with 5/16" key
- Lubricant Codes: X = No Pressure Lube, P = Pressure Lube, W = Wet Spline
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 versatile platform. The series offers 9 speed ratios and 18 shift options, covering direct-mount and driveshaft output configurations. Markets served include aerial, construction equipment, water trucks, towing and recovery, defense, and material handling. Part number 272XMAJX-A3BV is also referenced as SP272XMAJX-A3BV in some catalog systems.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
