Bearing Basics • Things roll better than they slide. Rolling friction has less resistance that sliding friction. Parts last longer! • Bearings do this by providing smooth balls or rollers, and inner and outer surfaces for the them to roll against. • These balls or rollers “bear” the load. • Two kinds of loading – Radial and Thrust
Radial Loads • Radial loads have the load pulling from one side
Thrust Loads • Thrust loads have the weight of the entire load applied to the surface of all the bearing.
Roller Bearings • Can handle very heavy radial loads. Load is spread out over a large area • 3 types – Flat, tapered and needle
Ball Bearings • Most common type • Can handle both radial and thrust loads of moderate weight • Very small contact point
Hub/Cartridge Bearings • Cartridge – Sealed, pressed in place • Two rows of ball bearings • Used on both front and rear wheels
Front Hub Bearing • Hub – Sealed, Bolted in place • Two rows of ball bearings • Has integral ABS sensor • Splinted to Axle shaft • Contains flange for wheel to bolt up to
Rear Hub Bearing • Hub – Sealed, Bolted in place • Two rows of ball bearings • Has integral ABS sensor • Contains flange for wheel to bolt up to
BEARING SERVICE • Should use brass drift punch • Should use bearing driver whenever possible • Clean bearing and race • Pack new grease in bearing • Use high temp grease on disc brake equipped car.