Features
Ductile Iron Bearing Cap - 117% stronger than gray iron for increased durability
Enhanced Clutch Pack - steel discs are 80% thicker to resist premature tooth wear
Improved Seal - O-ring configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Nine Speed Ratios - covers both low and high-speed output requirements
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) and SmartStart reduce shock load and protect driven equipment
Rotatable cast iron flanges reduce interference clearance issues with pump mounting
10-Bolt hot-shift mount designed for Allison automatic transmissions
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Continuous Operation: Yes
- Transmission Application: Allison automatic transmissions (10-bolt aperture)
- Speed Ratios: Nine, including low and high speeds
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubricant Options: Pressure Lube or Wet Spline
- Markets: Fire and Rescue, Refuse, Pumper Cleaner, Truck Cranes
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
