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. A cross-reference to 280GBFJP-B8BD or 280GBFJPB8BD is noted for reference. 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)
- Cross Reference: 280GBFJP-B8BD or 280GBFJPB8BD
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
