The Chelsea 281 Series Power Take-Off, part number 281GBFJP-B8BD or 281GBFJPB8BD, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar applications. It mounts via a 10-bolt pattern and delivers nine speed ratios spanning low and high ranges. The ductile iron bearing cap is 117% stronger than gray iron, and the clutch pack uses steel discs 80% thicker than the previous generation to resist premature wear. An O-ring sealing configuration between the housing and bearing cap improves clamp load and reduces vibration-related damage. Rotatable cast-iron flanges cut interference issues at the pump, while the Wet Spline Lubrication option extends shaft life by 7 to 10 times. Electronic Overspeed Control (EOC) and the SmartStart feature are included to protect driven equipment and reduce shock loads at engagement. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic PowerShift (hot-shift) operation for Allison automatic transmissions with 10-bolt aperture
Ductile iron bearing cap, 117% stronger than gray iron for added durability
Enhanced clutch pack with steel discs 80% thicker than the previous 280 Series generation
Nine speed ratios including low- and high-speed ranges
Wet Spline Lubrication option extends output shaft life 7 to 10 times compared to standard lubrication
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces engagement shock loads
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Compatible Transmissions: Allison automatic (10-bolt aperture)
- Speed Ratios: Nine, including low and high
- Seal Configuration: O-ring between housing and bearing cap
- Lubrication Option: Wet Spline (P = Pressure Lube, W = Wet Spline)
- Overspeed Protection: Electronic Overspeed Control (EOC)
Additional Information
Parts manual and diagrams: Chelsea 281 Series PTO parts list with prices
