The Chelsea 489 Series Power Take-Off Assembly, part number 489XFAHX-A3AZ or 489XFAHXA3AZ, mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing eliminates the need for an adapter plate, removing a potential leak path compared to multi-piece housings. Shift type is wire/cable mechanical. The 1-1/4" round output shaft (with key) delivers up to 48 HP at 1,000 RPM, and the series carries an intermittent torque rating of 250 lb-ft. Strong tapered bearings handle load better than needle-bearing designs. Internal parts are shared with the Chelsea 442 Series, which simplifies repair sourcing. Call us to confirm proper fit for your transmission and application.
The Chelsea 489 Series is engineered for aerial, vocational, municipal, and other mobile equipment applications including utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. Twenty-seven output options are available across the series, including Chelsea's 360-degree rotatable flange. Eleven internal speed ratios and shift configurations make this a versatile platform. The kit-style design simplifies field service, and internal components are interchangeable with the Chelsea 442 Series.
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 also available
1-1/4" round output shaft with key; greaseable output options reduce spline fretting and corrosion
Intermittent torque rating: 250 lb-ft (339 Nm) per series spec; check application pages for your actual rating
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal parts common to Chelsea 442 Series simplify service and parts sourcing
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (direct to transmission, no adapter plate)
- 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)
- CONTINUOUS TORQUE: De-rate intermittent 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 COMPATIBILITY: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
- LUBRICANT: X = No Pressure Lube; P = Pressure Lube (verify suffix for this unit)
Additional Information
The Chelsea 489 Series is engineered for aerial, vocational, municipal, and other mobile equipment applications including utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. Twenty-seven output options are available across the series, including Chelsea's 360-degree rotatable flange. Eleven internal speed ratios and shift configurations make this a versatile platform. The kit-style design simplifies field service, and internal components are interchangeable with the Chelsea 442 Series.
