The Chelsea 281 Series Power Take-Off, part number 281GKFJP-G5RK or 281GKFJPG5RK, is a hydraulically shifted (PowerShift) hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar units. The 281 Series is an evolution of the 280 Series, with a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between housing and bearing cap, and an enhanced clutch pack featuring 80% thicker steel disks to resist premature tooth wear. Nine speed ratios cover both low and high ranges. Rotatable cast-iron flanges reduce interference clearance issues, and the Wet Spline Lubrication option extends shaft life by 7 to 10 times. Common markets include fire and rescue, truck cranes, pumper cleaner, and refuse applications. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic (PowerShift) hot-shift operation for 10-bolt automatic transmission apertures including Allison and Caterpillar
Ductile iron bearing cap rated 117% stronger than gray iron for increased durability
Enhanced clutch pack with 80% thicker steel disks to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Nine speed ratios covering both low and high ranges
Wet Spline Lubrication option provides 7 to 10 times greater shaft life; SmartStart reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Shift Type: Hydraulic (PowerShift) Hot-Shift
- Mounting: 10-Bolt aperture
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application page
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine, including low and high
- Lubrication: Pressure Lube or Wet Spline options
- Continuous Operation: Yes
- Part Number: 281GKFJP-G5RK or 281GKFJPG5RK
Additional Information
Parts manual and diagrams: Chelsea 281 Series PTO parts list with prices
