Description
The Chelsea 281GDFJW-D5RS or 281GDFJWD5RS is a 281 Series hydraulically shifted, hot-shift Power Take-Off designed for automatic transmissions with a 10-bolt aperture, most commonly Allison and Caterpillar applications. The 281 Series is an evolution of the 280 Series, adding a ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap to reduce vibrational effects and improve clamp load. The clutch pack uses steel discs 80% thicker than its predecessor to resist premature tooth wear. Nine speed ratios cover both low- and high-speed needs, and a Wet Spline Lubrication option can extend shaft life 7 to 10 times over standard. Electronic Overspeed Control (EOC) and SmartStart are available to protect driven equipment and reduce shock load at engagement. Call us to confirm proper fit for your application.
Features
Chelsea 281 Series hydraulic PowerShift (hot-shift) PTO
10-bolt mounting aperture, compatible with Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load and resists vibration
Enhanced clutch pack with steel discs 80% thicker than 280 Series for reduced tooth wear
Nine speed ratios including low- and high-speed ranges
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Rotatable cast-iron flanges reduce pump clearance interference issues
SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Transmission Compatibility: Allison and Caterpillar automatic transmissions (10-bolt aperture)
- Speed Ratios: Nine, including low- and high-speed
- Continuous Operation: Yes
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube or Wet Spline options available
- Bearing Cap Material: Ductile Iron
- Electronic Overspeed Control (EOC): Available
- SmartStart: Available for shock-load reduction at engagement
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
