Features
Hydraulic PowerShift (hot shift) operation, designed for 10-bolt aperture automatic transmissions including Allison
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load and resists vibrational effects
80% thicker steel discs in the clutch pack to resist premature tooth wear
Nine speed ratios including dedicated low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces shock load at engagement
Positive Stop for driveline outputs eliminates oil seal damage from coupling
Crosses to 280GSFJP-G5RK or 280GSFJPG5RK
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot Shift)
- Continuous Operation: Yes
- Compatible Transmission Manufacturer: Allison
- 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)
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 37 HP at 500 RPM; 74 HP at 1000 RPM
- Output Types Available in Series: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube (P) or Wet Spline (W) options
- Speed Ratios: Nine (including low and high)
- Cross Reference: 280GSFJP-G5RK or 280GSFJPG5RK
- Markets: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
Additional Information
The Chelsea 281 Series is covered by the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual. Hose is included with this assembly.
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
