281GDFJP-G8RF Chelsea PTO Assembly

The Chelsea 281GDFJP-G8RF or 281GDFJPG8RF is a hydraulically shifted, hot-shift Power Take-Off from the Chelsea 281 Series, designed for automatic transmissions with a 10-bolt aperture including Allison applications. It carries a single continuous duty torque rating up to 390 lb-ft and delivers 56+ HP of output power. The 281 Series is an evolution of the 280 Series, adding a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration for improved clamp load, and an 80% thicker clutch pack to resist premature tooth wear. Nine speed ratios cover both low and high ranges. Electronic Overspeed Control (EOC) is included. Available from Pro Gear and Transmission - call us to confirm proper fit for your specific transmission and application.

Features

Ductile iron bearing cap rated 117% stronger than gray iron for increased durability
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds; single continuous duty torque rating up to 390 lb-ft
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces shock load at start-up

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: Hydraulic PowerShift (Hot Shift)
• Compatible Transmission Type: Allison Automatic (10-Bolt Aperture)
• Continuous Torque Rating: 390 lb-ft (529 Nm)
• Output Power: 56+ HP (51+ kW)
• Shaft Power: 37 HP at 500 RPM / 74 HP at 1000 RPM
• Output Types Available: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Speed Ratios: Nine (including low and high)
• Lubrication: Pressure Lube and Wet Spline options
• Continuous Operation: Yes
• Also Referenced As: 281GDFJPG8RF

Additional Information

Parts manual and diagrams: Chelsea 281 Series PTO parts list with prices