The Chelsea 272 Series power take-off assembly, part number 272XBAJX-25RK or 272XBAJX25RK, is a 6-bolt hot shift PTO designed for medium-duty commercial truck applications including towing and recovery, aerial, construction equipment, and water trucks. The 272 Series supports intermittent torque ratings of 201-300 lb-ft (401-500 Nm) and delivers 56 or more horsepower output. Available with pneumatic or hydraulic shift, it features an integral air control valve and rotatable flanges. Output shaft options in the 272 Series include a 1-inch round shaft with 1/4-inch key or a 1-1/4-inch round shaft with 5/16-inch key. Smart-Start capability handles high-torque start-up conditions. Call us to confirm proper fit for your application.
Features
6-bolt mounting for medium-duty hot shift PTO applications
Intermittent torque rating: 201-300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW)
Pneumatic or hydraulic shift with integral air control valve
Rotatable flanges for flexible installation
Smart-Start option supports high-torque start-up conditions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic or Hydraulic
- 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 Code: 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 updated platform. The series offers nine speed ratios and eighteen shift configurations, making it adaptable across a wide range of truck-mounted equipment. Wet-Spline technology is available on direct-mount configurations to extend PTO and pump shaft service life. Common markets include aerial lift, towing and recovery, construction equipment, water trucks, and material handling. Part number 272XBAJX-25RK is sold individually (each) and is also referenced as SP272XBAJX-25RK.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
