Description
The Chelsea 281 Series Power Take-Off, part number 281GCFJP-N5XV or 281GCFJPN5XV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. It delivers nine speed ratios spanning low and high ranges, with continuous-duty torque rated at 390 lb-ft (529 Nm) at the series level. Output options include SAE B and SAE C pump flanges, ISO 7652 pump flange, and driveline configurations. The 281 Series is an evolution of the 280 Series, adding a ductile iron bearing cap that is 117% stronger than gray iron, an o-ring sealing configuration between the housing and bearing cap, and an 80% thicker clutch pack for reduced tooth wear. Wet Spline lubrication option extends shaft life 7 to 10 times. Available from Pro Gear and Transmission.
Features
Hydraulic PowerShift (hot-shift) operation for use with Allison and Caterpillar automatic transmissions
10-bolt aperture mounting
Nine speed ratios including low and high speeds
Ductile iron bearing cap rated 117% stronger than gray iron
O-ring sealing between housing and bearing cap improves clamp load and resists vibration
80% thicker steel clutch pack discs for reduced premature tooth wear
Wet Spline lubrication option provides 7 to 10 times greater shaft life
Positive Stop on driveline outputs eliminates oil seal damage from coupling
SmartStart reduces shock load at start-up for compatible applications
Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt aperture
- Shift Type: Hydraulic PowerShift (hot-shift)
- Transmission Compatibility: Allison and Caterpillar automatic transmissions
- Series Continuous Torque Rating: 390 lb-ft (529 Nm)
- Speed Ratios: Nine, including low and high
- Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Shaft Power (series): 37 HP at 500 RPM, 74 HP at 1000 RPM
- Lubricant Options: Pressure lube, Wet Spline
- 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.
