The Chelsea 252 Series Power Take-Off Assembly, part number 252DDKUX-B5XB or 252DDKUXB5XB, is a hydraulic-shift, 6-bolt PTO engineered for Allison 1000/2000/2400 series automatic transmissions and RAM truck applications. Output shaft is a 1-inch round with keyway. Intermittent torque rating falls in the 101-200 lb-ft range (see application pages for the confirmed 120 lb-ft figure). Shaft power output is 11 HP at 500 RPM and 23 HP at 1000 RPM, with a maximum continuous rating of 25 HP. The 252 Series integrates its cartridge valve directly into the housing, eliminating remote solenoids and reducing installation to a single hose connection. The compact housing is sized to pass through a floor access panel without dropping the exhaust. Call us to confirm proper fit for your transmission and chassis configuration.
The Chelsea 252 Series compact housing is sized to slip through a standard floor access panel, so installation on RAM trucks and Allison-equipped chassis does not require dropping the exhaust system. A wide selection of Parker pumps is available to pair with this PTO, covering flows from 1.6 gpm to 8.2 gpm at 1000 RPM. PTO and pump can be ordered together under a single part number. Typical vocational applications include tow and recovery vehicles, tire service trucks, dump trucks, and aerial equipment.
Features
Hydraulic shift, 6-bolt mounting configuration
1" round output shaft with 1/4" key
Intermittent torque: 101-200 lb-ft (120 lb-ft per application data)
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM (up to 25 HP continuous with 30% de-rating)
Integrated cartridge valve with single hose connection simplifies installation
Weather-tight electrical connectors and controlled compression interface gasket
Tech Specs
- Intermittent Torque: 101-200 lb-ft (120 lb-ft per application data) / 101-200 Nm (163 Nm per application data)
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Output Shaft Type: 1" Round with 1/4" Key
- 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
- Compatible Transmissions: Allison 1000/2000/2400 Series, RAM (Aisin Automatic)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 252 Series compact housing is sized to slip through a standard floor access panel, so installation on RAM trucks and Allison-equipped chassis does not require dropping the exhaust system. A wide selection of Parker pumps is available to pair with this PTO, covering flows from 1.6 gpm to 8.2 gpm at 1000 RPM. PTO and pump can be ordered together under a single part number. Typical vocational applications include tow and recovery vehicles, tire service trucks, dump trucks, and aerial equipment.
