Description
The Chelsea 489 Series Power Take-Off Assembly, part number 489XFAHX-P5XK or 489XFAHXP5XK, mounts directly to 8-bolt manual transmission openings on Eaton Fuller, Mack, Tremec, and compatible gearboxes without an adapter plate, eliminating a potential leak path. The one-piece cast iron housing delivers 250 lb-ft intermittent torque, matching the capacity of the 442 Series. This unit shifts via wire/cable mechanical actuation and features a 1-1/4″ round output shaft. Shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Tapered bearings provide greater load-bearing capability than needle-bearing designs. Call us to confirm proper fit for your transmission and application.
Features
8-Bolt direct-mount cast iron housing fits Eaton Fuller, Mack, Tremec, and other compatible manual transmissions
Wire/cable mechanical shift with electric-over-air shift option available in the 489 Series
1-1/4″ round output shaft; pressure lube (P) and no-pressure-lube (X) lubricant configurations available
Intermittent torque rating of 250 lb-ft (339 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Kit-style design simplifies service; internal components are common with the Chelsea 442 Series
Greaseable output options help reduce pump shaft spline fretting and corrosion
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: 250 lb-ft (339 Nm) – Check Application Pages for Actual Torque Ratings
- CONTINUOUS TORQUE: De-rate intermittent torque rating by 30% – Check Application Pages for Actual Torque Ratings
- OUTPUT POWER: 46-55 HP (31-40 kW)
- SHAFT POWER: 24 HP (18 kW) at 500 RPM; 48 HP (36 kW) at 1,000 RPM
- TRANSMISSION MANUFACTURER COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Other
- LUBRICANT: X = No Pressure Lube; P = Pressure Lube
Additional Information
The Chelsea 489 Series is engineered for vocational applications including utility trucks, dump trucks, snow and ice removal equipment, and fire and rescue vehicles. The integral 8-bolt housing mounts directly to the transmission without an adapter plate, reducing potential leak paths. Eleven internal speed ratios and multiple shift options are available across the 489 Series, and 27 output configurations include Chelsea’s 360-degree rotatable flange. Internal parts are shared with the proven 442 Series for simplified parts sourcing. Reference documents for this series include the 489 Series Parts List (HY25-2442-M1_US) and Chelsea Service Manual (HY25-6489-M1/US).
