The Chelsea 489XSITX-W3AF is an 8-bolt Power Take-Off unit from the Chelsea 489 Series, designed to mount directly to manual transmissions including Eaton Fuller, Mack, and Tremec without an adapter plate. The one-piece cast iron housing bolts straight to the 8-bolt transmission opening, eliminating the adapter plate that conventional PTOs require and reducing potential leak paths. The 489 Series carries an intermittent torque rating of 201 to 300 lb-ft and delivers up to 46 to 55 HP output. The wire/cable mechanical shift mechanism and 1-1/4" round keyed output shaft make this unit a practical fit for utility, dump, snow removal, and fire and rescue vocational applications. Pro Gear and Transmission carries this genuine Chelsea part.
Features
8-Bolt mounting -- bolts directly to most manual transmissions (Eaton Fuller, Mack, Tremec) with no adapter plate required
One-piece cast iron housing reduces potential leak paths
Wire/cable mechanical shift type
1-1/4" round keyed output shaft
Intermittent torque rating: 201 to 300 lb-ft (301 to 400 Nm)
Output power: 46 to 55 HP (31 to 40 kW); internal parts common to Chelsea 442 Series
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Output Shaft Type: Round Shaft, 1-1/4" Key
- Intermittent Torque: 201 to 300 lb-ft (301 to 400 Nm)
- Output Power: 46 to 55 HP (31 to 40 kW)
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1000 RPM
- Lubricant Type: X = No Pressure Lube (per series code)
- Product Series: 489
Additional Information
The Chelsea 489XSITX-W3AF is also referenced as SP489XSITX-W3AF. The 489 Series offers eleven internal speed ratios and twenty-seven output options, including a 360-degree rotatable flange with a greaseable shaft to reduce pump shaft spline fretting and corrosion. Tapered bearings replace needle bearings found in some competing designs, providing greater load-bearing capability. Typical vocational applications for this series include utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. Parker Chelsea service and parts documentation for this series includes the 489 Series Parts List (HY25-2442-M1_US) and the Chelsea Service Manual (HY25-6489-M1/US).Parts Manual: Chelsea 489 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
