Features
Hydraulic (PowerShift) hot-shift operation for 10-bolt automatic transmission apertures, including Allison
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Clutch pack steel discs increased 80% in thickness to resist premature tooth wear
Nine speed ratios available, covering low and high speed ranges
Wet Spline lubrication option extends shaft life 7 to 10 times compared to standard
SmartStart feature reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Rotatable cast-iron flanges reduce pump clearance interference; Positive Stop for driveline outputs eliminates oil seal damage
Tech Specs
- Mounting Type: 10-Bolt aperture
- Shift Type: PowerShift (Hydraulic hot-shift)
- Continuous Torque: 390 lb-ft (529 Nm)
- Transmission Compatibility: Allison and Caterpillar automatic transmissions
- Speed Ratios: Nine (including 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
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
