The Chelsea 489 Series Power Take-Off Assembly, part number 489XQAHX-H3AZ or 489XQAHXH3AZ, is an 8-bolt PTO designed for manual transmissions including Eaton/Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing mounts directly to the 8-bolt transmission opening, eliminating the need for an adapter plate and reducing potential leak paths. Intermittent torque capacity for the 489 Series is 201-300 lb-ft (301-400 Nm); actual application torque ratings should be confirmed on the Chelsea application pages. Output is rated at 46-55 HP (31-40 kW), with shaft power of 24 HP at 500 RPM and 48 HP at 1,000 RPM. This unit features a 1-1/4" round output shaft with key, wire/cable mechanical shift, and tapered output bearings for greater load capacity than needle-bearing designs. Internal parts are common to the Chelsea 442 Series. Call us to confirm proper fit for your application.
The Chelsea 489 Series fits a wide range of vocational applications including utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. The 489 Series offers eleven internal speed ratios and multiple shift options. Twenty-seven output configurations are available within the series, including a 360-degree rotatable flange option with greaseable shaft to reduce pump shaft spline fretting and corrosion. For service and parts information, refer to the 489 Series Parts List (HY25-2442-M1_US) and the Chelsea Service Manual (HY25-6489-M1/US).
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening, no adapter plate required
Wire/cable mechanical shift with electric-over-air shift option available in the 489 Series
1-1/4" round output shaft with keyway
Intermittent torque rating: 201-300 lb-ft (301-400 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal parts common to the Chelsea 442 Series, simplifying parts stocking and service
Kit-style design for easier field service; greaseable output options available
Tech Specs
- Product Series: 489
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable Mechanical
- Output Shaft Type: 1-1/4" Round with Key
- Intermittent Torque: 201-300 lb-ft (301-400 Nm) - check Chelsea application pages for actual torque rating
- Continuous Torque: De-rate intermittent rating by 30% - check Chelsea application pages for actual torque rating
- 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, Tremec, and other manual transmissions with 8-bolt PTO opening
- Lubricant Type: X = No Pressure Lube; P = Pressure Lube
Additional Information
The Chelsea 489 Series fits a wide range of vocational applications including utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. The 489 Series offers eleven internal speed ratios and multiple shift options. Twenty-seven output configurations are available within the series, including a 360-degree rotatable flange option with greaseable shaft to reduce pump shaft spline fretting and corrosion. For service and parts information, refer to the 489 Series Parts List (HY25-2442-M1_US) and the Chelsea Service Manual (HY25-6489-M1/US).
