281GSFJP-B8RF Chelsea PTO Assembly

The Chelsea 281GSFJP-B8RF or 281GSFJPB8RF is a hydraulically shifted, hot-shift Power Take-Off from the Chelsea 281 Series, designed for 10-bolt automatic transmissions commonly found in Allison applications. This PTO mounts to a 10-bolt aperture and supports continuous-duty operation. The 281 Series is an evolution of the 280 Series, incorporating a ductile iron bearing cap that is 117% stronger than gray iron, an 80% thicker clutch pack steel disc, and an O-ring sealing configuration between the housing and bearing cap to resist the vibrational effects of modern engine designs. Nine speed ratios cover both low and high ranges. The cross-reference for this part is 280GSFJP-B8RF or 280GSFJPB8RF. Call us to confirm proper fit for your specific transmission and application.

Features

Hydraulic hot-shift (PowerShift) operation for 10-bolt automatic transmissions, including Allison
Ductile iron bearing cap, 117% stronger than gray iron for increased durability
O-ring sealing configuration between housing and bearing cap to improve clamp load and reduce vibrational damage
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
SmartStart feature reduces shock load at start-up for select applications
Electronic Overspeed Control (EOC) protects driven equipment
Rotatable cast-iron flanges reduce interference/clearance issues
Positive stop for driveline outputs eliminates oil seal damage from coupling
Cross-references: 280GSFJP-B8RF or 280GSFJPB8RF

Tech Specs

• Mounting Type: 10-Bolt aperture (Allison automatic transmissions)
• Shift Type: PowerShift (Hydraulic hot-shift)
• Continuous Operation: Yes
• Series Continuous Torque Rating: 390 lb-ft (529 Nm) - check application data for this specific configuration
• Output Power: 56+ HP (51+ kW)
• Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
• Speed Ratios: Nine ratios, including low and high speeds
• Lubricant Options: Pressure Lube or Wet Spline
• Cross Reference: 280GSFJP-B8RF or 280GSFJPB8RF

Additional Information

Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.