The Chelsea 281 Series Power Take-Off, part number 281GBFJP-H8XV or 281GBFJPH8XV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar units. It carries a continuous torque rating of 390 lb-ft and offers nine speed ratios spanning low and high ranges. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and cap improves clamp load while reducing vibrational effects. The clutch pack uses steel discs that are 80% thicker to resist premature tooth wear. Rotatable cast-iron flanges reduce interference issues, and a Wet Spline Lubrication option can extend shaft life 7 to 10 times compared to a standard configuration. Electronic Overspeed Control (EOC) protects driven equipment, and SmartStart reduces shock load at engagement. Common markets include fire and rescue, refuse, pumper-cleaner, and truck crane applications. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic (PowerShift) hot-shift operation for automatic transmissions
10-bolt aperture mounting, compatible with Allison and Caterpillar transmissions
Ductile iron bearing cap rated 117% stronger than gray iron
O-ring seal between housing and bearing cap improves clamp load and resists vibration
Enhanced clutch pack with steel discs 80% thicker than the predecessor 280 Series
Nine speed ratios including low and high speeds; Wet Spline Lubrication option extends shaft life 7 to 10 times
Electronic Overspeed Control (EOC) and SmartStart shock-load reduction included
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (PowerShift) Hot-Shift
- Continuous Torque: 390 lb-ft (529 Nm)
- Speed Ratios: Nine, including low and high
- Transmission Compatibility: Allison and Caterpillar automatic transmissions
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication Options: Pressure Lube, Wet Spline
- Electronic Overspeed Control (EOC): Included
- SmartStart: Available for applicable configurations
- Series: Chelsea 281 (evolution of the 280 Series)
- Part Number: 281GBFJP-H8XV or 281GBFJPH8XV
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
