Features
Ductile iron bearing cap, 117% stronger than gray iron for improved durability
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
80% thicker steel discs in the clutch pack to resist premature tooth wear
Nine speed ratios including low and high speeds
Rotatable cast-iron flanges reduce interference clearance issues at the pump
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Positive stop for driveline outputs eliminates oil seal damage from coupling
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart reduces shock load at start-up for applicable configurations
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Compatible Transmission: Allison automatic transmissions
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application page
- 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 (P) or wet spline (W) option
- Series Shaft Power: 37 HP at 500 RPM / 74 HP at 1000 RPM
- Cross-Reference: 280GCFJP-B5SD or 280GCFJPB5SD
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
