Automotive wheel bearings
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Automotive Wheel Bearings 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.

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Bearing basics l.jpg
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


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Radial Loads

  • Radial loads have the load pulling from one side


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Thrust Loads

  • Thrust loads have the weight of the entire load applied to the surface of all the bearing.


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Roller Bearings

  • Can handle very heavy radial loads. Load is spread out over a large area

  • 3 types – Flat, tapered and needle


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Ball Bearings

  • Most common type

  • Can handle both radial and thrust loads of moderate weight

  • Very small contact point




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Hub/Cartridge Bearings

  • Cartridge – Sealed, pressed in place

  • Two rows of ball bearings

  • Used on both front and rear wheels


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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


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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


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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.


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