Cup And Cone Bearings Bike

For bearing ball standards see.

Cup and cone bearings bike.

The cup is normally a permanent press fit into the hub shell. The hubs of most bicycle wheels revolve around one of two types of bearing system. Bicycle bearings commonly use bearing balls placed in a cone compressed with a cup cup and cone bearing. If the cones are screwed on too far they exert pressure on the bearing balls.

The bits that keep your bike rolling. We are using a rear wheel but the procedure is the same for a front. Cup with curved walls holds the balls while the cone presses on top holding them in place. Standard bicycle bearing ball sizes.

The combination of cup cone and balls forms the bearing. Measure your axle thread size the cones outer diameter and overall length. Angular contact bearings also allow easier maintenance adjustability and serviceability. Loose ball bearings are the most traditional and require the use of bearings with a mated cup and cone.

Steel balls roll between these two parts. Thanks for your suggestion. The cone traps the ball bearing. I do a lot of old bikes and finding cones is always a big pain.

There are some exceptions use your old cones for reference. The cones are conical nuts that screw onto the axle. If you cannot find an exact fit cone from our hub cone charts you will need to measure your existing cone and axle to find an approximate fit. A disposable cartridge bearing or a cup and cone system which can be serviced.

If there is looseness from bearing play the cone can be move closer to the cup. There is an improvement on this technique as follows. The cups are built into the shell of the hub. Instead of fixing the cone in a vise and then grinding on it with a stone which may not be done very evenly it is easier to make a fixed rounded grinding surface and then attach the cone to a rotary drill or dremel tool to machine it.

Find out how to service cup and cone hubs in our walkthrough video step 1. A basic bearing system is seen below. The locknut is tightened against the cone to prevent the cone from moving. There is a bearing on each side of the hub.

Taiwanese cones fit 9mm 9 5mm and 10mm diameter axles. Modern freehubs tend to be more complex.