Features
Ductile Iron Bearing Cap - 117% stronger than gray iron for increased durability
Hydraulic PowerShift (hot shift) operation - designed for 10-bolt aperture automatic transmissions including Allison
O-ring sealing configuration between housing and bearing cap to reduce vibrational effects and improve clamp load
80% thicker steel discs in the clutch pack to resist premature tooth wear
Nine speed ratios available, including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart feature reduces shock load at start-up for applicable configurations
Rotatable cast iron flanges reduce interference/clearance issues at pump mount
Positive Stop for driveline outputs eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt aperture
- Shift Type: PowerShift (Hydraulic / hot shift)
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm) - check application pages for actual torque rating
- Series Intermittent Torque: 301 to 400 lb-ft (501+ Nm)
- Speed Ratios: Nine ratios, including low and high speeds
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubricant Options: Pressure Lube (P), Wet Spline (W)
- Cross Reference Part Numbers: 280GPFJP-B5RK, 280GPFJPB5RK, 3252PME633SA
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
