Description
The Chelsea 281 Series PTO Assembly 281GGFJR-D5XD or 281GGFJRD5XD is a hydraulically shifted, hot-shift power take-off built for 10-bolt automatic transmission apertures commonly found on Allison applications. The 281 Series is an evolution of the 280 Series, introducing a ductile iron bearing cap rated 117% stronger than gray iron and an o-ring sealing configuration between the housing and bearing cap that improves clamp load and reduces vibrational effects caused by modern engine designs. The clutch pack steel discs are 80% thicker than the predecessor design to resist premature tooth wear. Nine speed ratios cover both low- and high-speed applications. Rotatable cast iron flanges reduce pump clearance interference, and the Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. Electronic Overspeed Control (EOC) is included to protect driven equipment, and SmartStart is available to reduce shock load at start-up. Call us to confirm proper fit for your application.
Features
Ductile Iron Bearing Cap – 117% stronger than gray iron for increased durability
O-Ring Sealing Configuration – reduces vibrational effects and improves clamp load between housing and bearing cap
Enhanced Clutch Pack – steel discs are 80% thicker than predecessor design to resist premature tooth wear
Nine Speed Ratios – includes both low- and high-speed options
Wet Spline Lubrication Option – provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) – protects driven equipment from overspeed damage
SmartStart – reduces shock load at start-up for select applications
Rotatable Cast Iron Flanges – reduce pump clearance interference issues
Positive Stop for Driveline Outputs – eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic) – Hot Shift
- Transmission Compatibility: Allison automatic transmissions (10-bolt aperture)
- Continuous Operation: Yes
- Series Continuous Torque: 390 lb-ft (529 Nm) – see application pages for actual torque ratings
- Speed Ratios: Nine, including low and high speeds
- Lubrication: Wet Spline option available
- Electronic Overspeed Control (EOC): Included
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
