Features
10-Bolt hydraulic PowerShift (hot-shift) designed for Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap improves clamp load and resists vibrational damage
80% thicker steel discs in the clutch pack to resist premature tooth wear
Nine speed ratios including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Positive Stop for driveline outputs eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic / Hot-Shift)
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Operation: Yes
- Series Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine (including low and high speeds)
- Lubrication: Pressure Lube (P) or Wet Spline (W) option
- SmartStart: Included for shock-load reduction at engagement
- 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.
