The Chelsea 252 Series Power Take-Off Assembly, part number 252DDKUX-B5P82 or 252DDKUXB5P82, is a hydraulic-shift PTO built on a 6-bolt mounting pattern for Allison and RAM automatic transmission applications. The output shaft is a 1-inch round with key. Intermittent torque is rated at 120 lb-ft (163 Nm); check the application pages for your specific installation torque confirmation. Shaft power output is 11 HP at 500 RPM and 23 HP at 1000 RPM, with a maximum output of 25 HP. The 252 Series is designed for compact installation: a single hose connection with an integrated cartridge valve eliminates the need for remote solenoids and multiple hose runs. The housing profile is designed to slip through a floor access panel, avoiding exhaust system removal during install. Call us to confirm proper fit for your application.
The Chelsea 252 Series is designed for aerial, dump truck, tow and recovery, tire service, and vocational municipal equipment applications. The compact housing profile fits through a standard floor access panel without requiring exhaust system removal. PTO and compatible Parker pump can be ordered together under a single part number. A selection of special Parker pumps is available with flows from 1.6 gpm to 8.2 gpm at 1000 RPM. The 252 Series supports continuous operation with a 30% de-rating applied.
Features
Hydraulic shift, 6-bolt mounting pattern
1-inch round output shaft with key
Intermittent torque rating: 120 lb-ft (163 Nm) - verify on application pages
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM (25 HP max output)
Single hose connection with integrated cartridge valve - no remote solenoid required
Weather-tight electrical connectors and controlled compression interface gasket
Tech Specs
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Transmission Manufacturer: Allison, RAM
- Output Shaft Type: 1" Round with Key
- Intermittent Torque: 120 lb-ft / 163 Nm (check application pages for actual torque ratings)
- Output Power: 25 HP and below / 20 kW and below
- Shaft Power: 11 HP at 500 RPM, 23 HP at 1000 RPM (9 kW at 500 RPM, 17 kW at 1000 RPM)
Additional Information
The Chelsea 252 Series is designed for aerial, dump truck, tow and recovery, tire service, and vocational municipal equipment applications. The compact housing profile fits through a standard floor access panel without requiring exhaust system removal. PTO and compatible Parker pump can be ordered together under a single part number. A selection of special Parker pumps is available with flows from 1.6 gpm to 8.2 gpm at 1000 RPM. The 252 Series supports continuous operation with a 30% de-rating applied.
