The Chelsea 281 Series Power Take-Off 281GGFJR-K5RK or 281GGFJRK5RK is a hydraulically shifted (PowerShift) PTO engineered for 10-bolt automatic transmissions, including Allison applications. The 281 Series is an evolution of the proven 280 Series, with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for improved clamp load, and an 80% thicker steel clutch pack to resist premature tooth wear. Nine available speed ratios span low and high ranges. Electronic Overspeed Control (EOC) and an optional Wet Spline Lubrication package extend service life. Rotatable cast iron flanges reduce interference clearance issues, and the included hose ships with the unit. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic PowerShift (hot shift) operation for 10-bolt automatic transmission mounting, including Allison applications
Ductile iron bearing cap rated 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 resist premature tooth wear
Nine speed ratios available, covering low and high speed ranges
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces shock load at engagement
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison automatic transmissions
- Continuous Operation: Yes
- Speed Ratios: Nine ratios available, including low and high speeds
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubricant Options: Pressure Lube (P), Wet Spline (W)
- Electronic Overspeed Control (EOC): Included
- Hose: Included
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
