Features
10-bolt mounting for Allison and Caterpillar automatic transmissions
Hydraulic PowerShift (hot-shift) operation for engagement under load
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap improves clamp load and resists vibration
Enhanced clutch pack with 80% thicker steel discs to reduce premature tooth wear
Nine speed ratios available, including low and high speeds
Wet Spline Lubrication option extends shaft life 7 to 10 times
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart feature reduces shock load at start-up for select applications
Positive Stop for driveline outputs eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (PowerShift / Hot-Shift)
- Continuous Operation: Yes
- Compatible Transmission Manufacturer: Allison
- Number of Speed Ratios: 9 (includes low and high)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube or Wet Spline option
- Bearing Cap Material: Ductile Iron
- 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.
