OTC 7180 Heavy-Duty Truck Axle Bearing Cup Installer

This is the driver tool for setting a new wheel-bearing cup into a heavy-duty axle bore without beating on it with a punch and hammer and walking it in crooked. Adjust the jaws to the cup's outside diameter, lock them down, slip the new cup over the tool, set it in the bore, and drive it home square with a hammer. One tool replaces a rack of up to 30 individual bearing-cup drivers.

Built for 11,000 to 50,000 lb capacity axles — the range covers most Class 6-8 straight truck, semi-tractor, and trailer axles — and adjusts to fit 3-5/8 inch to 6-1/2 inch O.D. bearing cups. Bearing number 7180. Alloy steel and aluminum construction, 22.9 x 5.1 x 5.3 inches, 9.6 oz.

OTC is the brand most heavy-truck techs already have in the box for this job; it shows up repeatedly in Class 8 shops for the same reason — it cuts race/cup install time roughly in half over makeshift methods and doesn't mar the bore or the cup the way an undersized punch does. Also works for pulling races on some hub styles, not just installing them.