The Chelsea 281 Series Power Take-Off, part number 281GGFJP-D5RK or 281GGFJPD5RK, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, commonly found on Allison transmissions. This series delivers a single, continuous duty torque rating and offers nine speed ratios covering both low and high speeds. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load while reducing vibrational effects. Rotatable cast-iron flanges reduce interference issues at the pump mount. The Wet Spline Lubrication option extends shaft life by 7 to 10 times, and a hose is included. SmartStart reduces shock load at start-up, while Electronic Overspeed Control (EOC) protects driven equipment. Typical markets include fire and rescue, truck cranes, pumper cleaner, and refuse applications. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap, 117% stronger than gray iron, for reduced vibrational damage
O-ring sealing configuration between housing and bearing cap improves clamp load
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life; hose included
SmartStart reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison (10-bolt aperture)
- Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine, including low and high speeds
- Lubrication: Pressure Lube (P) or Wet Spline (W) options
- Continuous Operation: Yes
- Electronic Overspeed Control (EOC): Included
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
