The Chelsea 281 Series Power Take-Off, part number 281GKFJP-D3RK or 281GKFJPD3RK, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison transmissions. The 281 Series carries a continuous torque rating of 390 lb-ft and offers nine speed ratios covering both low and high ranges. A ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load and resists vibrational stress from modern engine designs. The clutch pack uses steel discs 80% thicker than the previous generation to resist premature tooth wear. Rotatable cast-iron flanges reduce interference fit issues, and a positive stop for driveline outputs eliminates oil seal damage from coupling. SmartStart reduces shock load at start-up, and the Electronic Overspeed Control (EOC) protects driven equipment. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic (PowerShift) hot-shift operation for 10-bolt automatic transmission apertures, including Allison
Ductile iron bearing cap rated 117% stronger than gray iron
O-ring sealing between housing and bearing cap improves clamp load and resists engine vibration
Enhanced clutch pack with steel discs 80% thicker than the previous generation
Nine speed ratios available, including low and high speeds
Electronic Overspeed Control (EOC) and SmartStart reduce shock load and protect driven equipment
Tech Specs
- Mounting Type: 10-Bolt aperture
- Shift Type: Hydraulic (PowerShift) hot-shift
- Continuous Torque: 390 lb-ft (529 Nm)
- Transmission Compatibility: Allison automatic transmissions
- Speed Ratios: Nine, including low and high
- Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Lubrication: Pressure lube or wet spline option
- Series: Chelsea 281 Series (evolution of the 280 Series)
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
