Features
10-bolt hydraulic PowerShift (hot-shift) designed for Allison automatic transmissions
Ductile iron bearing cap rated 117% stronger than gray iron for extended service life
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Rotatable cast-iron flanges reduce pump clearance interference issues
Nine speed ratios available, including low and high-speed selections
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart option reduces shock load at engagement
Wet Spline Lubrication option provides 7 to 10 times greater output shaft life; hose included
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic), hot-shift
- Compatible Transmissions: Allison automatic (10-bolt aperture)
- Continuous Torque Rating: 390 lb-ft (529 Nm) - see application pages for actual ratings
- Speed Ratios: Nine, including low and high speeds
- Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Lubrication: Pressure lube (P) or Wet Spline (W) option
- Continuous Operation: Yes
- Optional Features: SmartStart, Electronic Overspeed Control (EOC)
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
