To establish strength and rigidity, the part is crafted from high grade and durable metal alloy constructions to have better resistance to heat, pressure, and wearing. Available for specific vehicle applications, there is no point delaying the replacements of damaged and worn bearings. Continuously agonizing on the grinding noises and erratic driving control that comes with battered bearings is wrong economy for you are fooling around with diving safety. More serious damages may be incurred where you can be facing more tremendous amount of repair costs. Investing with premium and high grade car wheel bearing replacements could instantly restore or 0 re-establish the handling features of your vehicle. 

The "motorcycle wheel bearings" sit between a cone screwed to the wheel axle and the cup in the wheel hub. They must be properly adjusted and greased. To find out if they need greasing without taking everything apart, simply remove the wheel from the bike, support the axle horizontally with your fingers, and turn the wheel slowly--try not to tilt the axle as it rotates. If the wheel does not turn smoothly or you can feel tiny bumps in your fingers, then you must dismantle the bearing assembly and service the bearings.

For the vast majority of applications (including bicycles), even so called "cheap" Chinese bearings are more than adequate if they are properly lubricated. For non-competitive riding, an automotive wheel bearing grease will keep your motorcycle wheel bearings happy for thousands of miles. I suggest solvent (70% isopropyl alcohol is fine) cleaning the balls, raceways, cones, etc, drying then immediately apply the grease to all the metal surfaces inside the bearing system. Use nitrile gloves - your finger oils are bad for skf bearings.

motorcycle wheel bearings should last for years and provide you with thousands of miles of travel---but they won't last forever. In some cases they even fail completely if they haven't been maintained correctly. Part of a maintenance schedule should include replacement of motorcycle wheel bearings before they fail. The procedure isn't that difficult if you have about an hour and a few small tools. Front and back wheels are similar in procedure to change bearings and only require slightly different tooling.

An important aspect of bicycle maintenance is to grease the  motorcycle wheel bearings. This helps to avoid costly future repairs and give you a much smoother, more comfortable ride. The motorcycle wheel bearings are between the cup in the wheel hub and a cone screwed to the wheel axle.

Take the wheels off the bicycle beef before greasing the motorcycle wheel bearings.A mixture of 50 percent white teflon bicycle grease and 50 percent green axle grease works well on  motorcycle wheel bearings.Don't make the iko bearing cone too tight when screwing it back into place. Bicycle motorcycle wheel bearings shouldn't have any play in them and need to roll smoothly.