Features
Ductile Iron Bearing Cap - 117% stronger than gray iron for increased durability
Enhanced Clutch Pack - 80% thicker steel discs resist premature tooth wear from modern engine vibration
O-Ring Sealing Configuration - improves clamp load and reduces vibrational effects at the housing-to-cap joint
Nine Speed Ratios - covers both low and high speed ranges
Wet Spline Lubrication Option - provides 7 to 10 times greater shaft life
SmartStart - reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Rotatable Cast-Iron Flanges with Positive Stop for driveline outputs - eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Transmission Compatibility: Allison and Caterpillar automatic transmissions (10-bolt aperture)
- Continuous Operation: Yes
- Speed Ratios: Nine, including low and high speeds
- Lubrication Options: Pressure Lube (P) or Wet Spline (W)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- 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.
