Description
The Chelsea 489GRAHX-A5GK or 489GRAHXA5GK is a 489 Series power take-off assembly built for manual transmissions with an 8-bolt PTO mounting aperture, including Eaton/Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing bolts directly to the 8-bolt opening without an adapter plate, which eliminates a potential leak path. Output shaft is a 1-1/4″ round with key. Shift is wire/cable mechanical. Intermittent torque capacity for the 489 Series is 250 lb-ft (339 Nm); shaft power runs 24 HP at 500 RPM and 48 HP at 1,000 RPM, with output power in the 46-55 HP range. Strong tapered bearings replace needle bearings for greater load-bearing capability. Kit-style construction shares internal parts with the 442 Series, making field service straightforward. Call us to confirm proper fit for your application.
Features
489 Series 8-bolt one-piece cast iron housing mounts directly to transmission without an adapter plate
Wire/cable mechanical shift; electric-over-air shift option also available
1-1/4″ round output shaft with key
Intermittent torque: 250 lb-ft (339 Nm); shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Tapered bearings for greater load-bearing capability over needle-bearing designs
Kit-style PTO with internal parts common to the Chelsea 442 Series for simplified service
Greaseable output options available to reduce pump shaft spline fretting and corrosion
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (one-piece cast iron housing, no adapter plate required)
- SHIFT TYPE: Wire/Cable Mechanical
- OUTPUT SHAFT TYPE: 1-1/4″ Round with Key
- INTERMITTENT TORQUE: 250 lb-ft / 339 Nm (check application pages for actual torque 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, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube; P = Pressure Lube
