Description
The Chelsea 489XAAHP-A3RA or 489XAAHPA3RA is a 489 Series power take-off assembly designed for manual transmissions with an 8-bolt PTO mounting aperture. The one-piece cast iron housing bolts directly to the transmission opening, eliminating the adapter plate and reducing potential leak paths. This unit uses a wire/cable mechanical shift and delivers shaft power of 24 HP at 500 RPM and 48 HP at 1,000 RPM, with an output power range of 46-55 HP. The 1-1/4″ round output shaft is available with keyway. Compatible transmissions include Eaton/Fuller, Mack, and Tremec. Strong tapered bearings replace needle bearings for greater load capacity. Internal components are common with the Chelsea 442 Series. Call us to confirm proper fit for your application.
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening, no adapter plate required
Wire/cable mechanical shift; electric over air shift option available
1-1/4″ round output shaft with keyway option
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Tapered bearings provide greater load capacity than needle bearing designs
Kit-style construction simplifies service; internal parts common to Chelsea 442 Series
Tech Specs
- Product Series: 489
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable Mechanical
- Output Shaft Type: 1-1/4″ Round; 1-1/4″ Round with Key
- Intermittent Torque: 201-300 lb-ft (301-400 Nm) – check application pages for actual torque ratings
- Output Power: 46-55 HP (31-40 kW)
- Shaft Power: 24 HP at 500 RPM / 48 HP at 1,000 RPM (18 kW at 500 RPM / 36 kW at 1,000 RPM)
- Lubricant: X = No Pressure Lube; P = Pressure Lube
- Compatible Transmissions: Eaton/Fuller, Volvo/Mack, Tremec and other manual transmissions with 8-bolt PTO aperture









