Features
Ductile Iron Bearing Cap - 117% stronger than gray iron for increased durability
O-Ring Sealing Configuration - reduces vibrational effects and improves clamp load between housing and bearing cap
Enhanced Clutch Pack - steel discs increased 80% in thickness to resist premature tooth wear
Nine Speed Ratios - includes both low- and high-speed options
Wet Spline Lubrication Option - provides 7 to 10 times greater shaft life
SmartStart - reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Positive Stop for Driveline Outputs - eliminates oil seal damage from coupling
Hose Included - no need to order separately
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application pages
- 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
- Speed Ratios: Nine, including low and high
- Lubrication: Pressure lube and wet spline options
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- 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.
