The Chelsea 281 Series Power Take-Off, part number 281GCFJW-D5RY or 281GCFJWD5RY, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar units. The 281 Series is an evolution of the 280 Series, carrying a continuous torque rating up to 390 lb-ft and output power of 56+ HP. Nine speed ratios cover both low and high ranges. The ductile iron bearing cap is 117% stronger than gray iron, and an 80% thicker clutch pack resists premature tooth wear. Wet Spline lubrication provides 7 to 10 times greater shaft life. SmartStart reduces shock load at engagement, and Electronic Overspeed Control (EOC) protects downstream driven equipment. Common markets include fire and rescue, refuse, pumper cleaner, and truck crane applications. Call us to confirm proper fit for your transmission and application.
The 281 Series is engineered for demanding duty cycles in fire and rescue, refuse, truck crane, and pumper cleaner applications. O-ring sealing between the housing and bearing cap improves clamp load and reduces vibrational effects from modern engine designs. Rotatable cast-iron flanges reduce interference clearance issues, and the Positive Stop feature on driveline outputs eliminates oil seal damage from coupling contact. Hose is included with the assembly. Electronic Overspeed Control (EOC) provides a safety layer for driven equipment. Relevant Parker documents include the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Features
Chelsea 281 Series hydraulic PowerShift (hot-shift) PTO
10-bolt mounting aperture for Allison and Caterpillar automatic transmissions
Ductile iron bearing cap rated 117% stronger than gray iron
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds; up to 390 lb-ft continuous torque
Electronic Overspeed Control (EOC) and SmartStart reduce shock load and protect driven equipment
Tech Specs
- Shift Type: Hydraulic PowerShift (hot-shift)
- Mounting Type: 10-Bolt
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 37 HP at 500 RPM / 74 HP at 1000 RPM
- Speed Ratios: Nine (including low and high)
- Lubrication Option: Wet Spline (7 to 10 times greater shaft life)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Continuous Operation: Yes
Additional Information
The 281 Series is engineered for demanding duty cycles in fire and rescue, refuse, truck crane, and pumper cleaner applications. O-ring sealing between the housing and bearing cap improves clamp load and reduces vibrational effects from modern engine designs. Rotatable cast-iron flanges reduce interference clearance issues, and the Positive Stop feature on driveline outputs eliminates oil seal damage from coupling contact. Hose is included with the assembly. Electronic Overspeed Control (EOC) provides a safety layer for driven equipment. Relevant Parker documents include the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
