The Chelsea 281 Series Power Take-Off, part number 281GCFJP-D3RY or 281GCFJPD3RY, is a hydraulically shifted (PowerShift) hot-shift PTO built for automatic transmissions with a 10-bolt aperture, including Allison applications. It carries a continuous torque rating of 390 lb-ft (529 Nm) and delivers output power of 56+ HP across nine available speed ratios spanning low and high ranges. The 281 Series evolved directly from the Chelsea 280 Series with three targeted upgrades: 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. Output options include SAE B and SAE C pump flanges, ISO 7652 pump flange, and driveline configurations. Call us to confirm proper fit for your application.
Features
Hydraulic PowerShift (hot-shift) operation for automatic transmissions with 10-bolt aperture
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap reduces vibrational effects and improves clamp load
80% thicker steel discs in the clutch pack resist premature tooth wear
Nine speed ratios including low and high speeds; continuous torque rated at 390 lb-ft (529 Nm)
Wet Spline Lubrication option extends shaft life 7 to 10 times; SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt aperture (Allison and Caterpillar automatic transmissions)
- Shift Type: PowerShift (Hydraulic) - Hot Shift
- Continuous Torque: 390 lb-ft (529 Nm)
- 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)
- Speed Ratios: Nine ratios including low and high speeds
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube (P) or Wet Spline (W) option
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
