Features
Hydraulic PowerShift (hot shift) operation for use with automatic transmissions
10-bolt aperture mounting, compatible with Allison and Caterpillar transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds; wet spline lubrication option extends shaft life 7 to 10 times
SmartStart reduces start-up shock load; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot Shift)
- Continuous Operation: Yes
- Transmission Compatibility: Allison, Caterpillar (automatic transmissions with 10-bolt aperture)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speeds: Nine speed ratios (low and high range)
- Lubricant Options: Pressure Lube (P), Wet Spline (W)
- 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.
