The Chelsea 252RDKUX-B51137 or 252RDKUXB51137 is a 252 Series Power Take-Off designed for Allison and RAM automatic transmissions. It uses hydraulic shift and mounts via a 6-bolt pattern. The output shaft is a 1-inch round shaft with a 1/4-inch key. Intermittent torque falls in the 101-200 lb-ft range (consult application pages for your exact rating). Shaft power is rated at 11 HP at 500 RPM and 23 HP at 1000 RPM, with a maximum output of 25 HP. The integrated cartridge valve and single hose connection simplify installation considerably compared to remote-solenoid setups. Weather-tight electrical connectors and a controlled compression interface gasket are included as standard. Call us to confirm proper fit for your application.
The Chelsea 252 Series is built for aerial, vocational, and municipal equipment applications including tow and recovery trucks, tire service trucks, dump trucks, and aerial units. The housing profile is designed to slip through a floor access panel without requiring exhaust system removal, reducing installation time. Compatible Parker pumps covering flows from 1.6 gpm to 8.2 gpm at 1000 RPM are available as a matched PTO-and-pump combination under a single part number.
Features
Hydraulic shift operation with single hose connection and integrated cartridge valve
6-bolt mounting for Allison and RAM automatic transmissions
1-inch round output shaft with 1/4-inch key
Intermittent torque rated 101-200 lb-ft (verify exact rating on Chelsea application pages)
Shaft power: 11 HP at 500 RPM, 23 HP at 1000 RPM; maximum output 25 HP
Weather-tight electrical connectors and controlled compression interface gasket included
Tech Specs
- Intermittent Torque: 101-200 lb-ft (120 lb-ft nominal - check application pages for actual rating)
- Shift Type: Hydraulic
- Mounting Type: 6-Bolt
- Output Shaft Type: 1" Round with 1/4" Key
- Output Power: 25 HP max, 20 kW max
- Shaft Power: 11 HP at 500 RPM, 23 HP at 1000 RPM (9 kW at 500 RPM, 17 kW at 1000 RPM)
- Transmission Fitment: Allison, RAM
- Dimensions (H x W x L): 15.75" x 12.5" x 14"
Additional Information
The Chelsea 252 Series is built for aerial, vocational, and municipal equipment applications including tow and recovery trucks, tire service trucks, dump trucks, and aerial units. The housing profile is designed to slip through a floor access panel without requiring exhaust system removal, reducing installation time. Compatible Parker pumps covering flows from 1.6 gpm to 8.2 gpm at 1000 RPM are available as a matched PTO-and-pump combination under a single part number.
Parts Manual: Chelsea 252 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
