Features
10-bolt mounting designed for Allison and compatible automatic transmissions
Hydraulic PowerShift (hot-shift) operation for continuous-duty use
390 lb-ft (529 Nm) continuous torque rating; 56+ HP output
Ductile iron bearing cap rated 117% stronger than gray iron
80% thicker clutch pack steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds
O-ring sealing between housing and bearing cap improves clamp load and reduces vibrational effects
Wet Spline lubrication option provides 7 to 10 times greater shaft life
SmartStart feature reduces shock load at start-up for applicable configurations
Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Continuous Torque: 390 lb-ft (529 Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 37 HP at 500 RPM / 74 HP at 1000 RPM
- Speed Ratios: Nine (includes low and high)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: 3/4"-11T Pump Spline, SAE B 7/8"-13T, SAE C 1-1/4"-14T, DIN 5462, 1410 Companion Flange, DIN 120 Flange, DIN 100 Flange, SmartStart Round Shaft 1-1/4" with 5/16" Key
- Lubrication: Pressure Lube (P) or Wet Spline (W) option
- Transmission Compatibility: Allison automatic transmissions (10-bolt aperture)
- 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.
