The Chelsea 281 Series Power Take-Off, part number 281GCFJP-H8XV or 281GCFJPH8XV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, commonly paired with Allison transmissions. The 281 Series is an evolution of the 280 Series, featuring a ductile iron bearing cap rated 117% stronger than gray iron and an 80% thicker clutch pack steel disc for improved wear resistance. An O-ring sealing configuration between the housing and bearing cap reduces vibrational effects from modern engine designs. Nine speed ratios cover both low and high ranges, and Electronic Overspeed Control (EOC) safeguards driven equipment. Call us to confirm proper fit for your transmission and application.
Features
Ductile Iron Bearing Cap - 117% stronger than gray iron compared to the 280 Series predecessor
Enhanced Clutch Pack - steel discs are 80% thicker to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios including dedicated low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces shock load at engagement
Positive stop for driveline outputs eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt aperture
- Shift Type: PowerShift (Hydraulic) - hot shift, continuous operation capable
- Compatible Transmission Manufacturer: Allison (automatic transmissions)
- Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Output Types Available: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Output Shaft Options: SmartStart round shaft (1-1/4 in. with 5/16 in. key), 3/4 in. 11-tooth pump spline, SAE B 7/8 in. 13-tooth pump spline, SAE C 1-1/4 in. 14-tooth pump spline, 1410 companion flange
- Speed Ratios: Nine ratios including low and high speeds
- Lubricant Options: Pressure lube or wet spline
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM (28 kW at 500 RPM, 55 kW at 1000 RPM)
- Typical Markets: Fire and rescue, truck cranes, pumper cleaner, refuse
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
