Features
Hydraulic PowerShift (hot-shift) operation, compatible with 10-bolt automatic transmission apertures including Allison
Ductile iron bearing cap, 117% stronger than gray iron predecessor
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap for improved clamp load and vibration resistance
Nine speed ratios including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Positive stop for driveline outputs eliminates oil seal damage from coupling
SmartStart feature reduces shock load at start-up for select applications
Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (PowerShift / Hot-Shift)
- Continuous Operation: Yes
- Compatible Transmissions: Allison and Caterpillar automatic transmissions (10-bolt aperture)
- Speed Ratios: Nine, including low and high speeds
- Lubricant Options: Pressure Lube or Wet Spline
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- 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.
