Description
The Chelsea 281GGFJW-D5RF or 281GGFJWD5RF is a 281 Series Power Take-Off built for automatic transmissions with a 10-bolt aperture, commonly matched to Allison transmissions. This hydraulically shifted (PowerShift) hot-shift PTO supports continuous-duty operation with a series continuous torque rating of 390 lb-ft. Nine speed ratios cover both low and high speed ranges. The 281 Series is an evolution of the 280 Series, adding 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 steel disc clutch pack to resist premature tooth wear. Rotatable cast-iron flanges reduce interference fitment issues. Electronic Overspeed Control (EOC) is included for driven-equipment protection. Call us to confirm proper fit for your application.
Features
Hydraulic PowerShift (hot-shift) operation for Allison 10-bolt automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap for improved clamp load and vibration resistance
80% thicker steel discs in the clutch pack to resist premature tooth wear
Nine speed ratios including low and high-speed ranges
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart feature reduces shock load at start-up for compatible applications
Rotatable cast-iron flanges reduce pump clearance and interference issues
Positive Stop for driveline outputs eliminates oil seal damage from coupling
Tech Specs
- Mounting: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm)
- Transmission Compatibility: Allison automatic transmissions
- Speed Ratios: Nine (includes low and high)
- Lubrication: Wet Spline (W designation)
- Electronic Overspeed Control (EOC): Included
- SmartStart: Yes (select applications)
- Markets: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
