The Chelsea 281GSFJP-D8AC or 281GSFJPD8AC is a hydraulically shifted, hot-shift Power Take-Off from Chelsea's 281 Series, designed for automatic transmissions with a 10-bolt aperture including Allison and Caterpillar transmissions. The 281 Series carries a continuous torque rating of 390 lb-ft (529 Nm) and offers nine speed ratios spanning low and high ranges. Key structural upgrades over the predecessor 280 Series include a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for improved clamp load, and an 80% thicker clutch pack to resist premature tooth wear. Rotatable cast-iron flanges reduce interference clearance issues, and a Positive Stop on driveline outputs eliminates oil seal damage from coupling contact. Electronic Overspeed Control (EOC) protects driven equipment, while the optional Wet Spline Lubrication delivers 7 to 10 times greater shaft life. Call us to confirm proper fit for your application.
Features
Hydraulic PowerShift (hot-shift) operation for Allison and Caterpillar 10-bolt automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron, reduces vibrational damage
O-ring sealing configuration between housing and bearing cap improves clamp load
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds; 390 lb-ft (529 Nm) continuous torque rating
Electronic Overspeed Control (EOC) and optional Wet Spline Lubrication for 7 to 10 times greater shaft life
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Compatible Transmission Manufacturers: Allison, Caterpillar
- Continuous Torque: 390 lb-ft (529 Nm)
- Number of Speed Ratios: Nine (including low and high speeds)
- Continuous Operation: Yes
- Output Types Available: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication Options: Pressure Lube, Wet Spline
- Series: Chelsea 281 Series (evolution of 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.
