The Chelsea 489 Series Power Take-Off Assembly, part number 489XRDAX-A5XK or 489XRDAXA5XK, mounts directly to the 8-bolt transmission opening on most manual transmissions including Eaton/Fuller, Volvo/Mack, and Tremec models. The one-piece cast iron housing bolts on without an adapter plate, removing a potential leak path at the mounting face. Intermittent torque capacity for this series reaches 250 lb-ft (339 Nm); continuous-duty use requires a 30% de-rate per Chelsea application tables. Wire/cable mechanical shift is standard on this unit. Output is a 1-1/4" round shaft with keyway. Shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Internal parts are common with the 442 Series, and the kit-style housing simplifies field service. Call us to confirm proper fit for your transmission and application.
Features
8-bolt one-piece cast iron housing mounts directly to the transmission opening without an adapter plate
Wire/cable mechanical shift; electric-over-air shift option also available for this series
1-1/4" round output shaft with keyway
Intermittent torque capacity: 250 lb-ft (339 Nm) per Chelsea series application tables
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal components shared with Chelsea 442 Series for broad parts availability and serviceability
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (direct to transmission, no adapter plate required)
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4" Round with keyway
- INTERMITTENT TORQUE: 250 lb-ft / 339 Nm (Check Chelsea application pages for actual torque ratings)
- CONTINUOUS TORQUE: De-rate intermittent torque rating by 30% (Check application pages for actual ratings)
- OUTPUT POWER: 46-55 HP / 31-40 kW
- SHAFT POWER: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Tremec, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube, P = Pressure Lube (see part number suffix)
Additional Information
