Hub - a detail which is a bearing assembly that provides the connection to the wheel suspension.Sometimes the term "hub" implies a whole set of parts, and sometimes - just one part of it (bearing assembly).In today's article, we'll tell you how this mechanism is constructed and what function is performed.
Appointment
Studs are used to adjust the disc with a special bearing on the axis of rotation (pin).The design of this mechanism presupposes the flanges.Recent attach the drive itself, or rim, joined the drum (in modern cars - the brake disc).
function wheel hubs
This mechanism allows all the wheels to rotate freely around its axis.This rotation is due to the bearings.Today the wheel hubs staffed roller or double row ball bearings.
Most modern devices feature the latest details fulfills all the enclosure.Because of this, the hub of the wheels can not be repaired.If they fails entirely replaced the mechanism.
Where are they located?
Every car has at least 4 of the hub, which can be placed on the front and rear, left and right axle shaft.On each wheel has its own mechanism for the free rotation of the tire.
bearing apparatus
As noted above, these items may be a roller or ball type.Regardless of these bearings it can accommodate radial and axial loads that are transmitted from the wheel to the hub.However, they have their differences.For example, wheels, as opposed to ball have a greater bearing capacity.Therefore, they provide a linear contact zone with treadmills bearing rings.Ball same device form a point contact zone.
rear wheel hub, complete with roller bearings, has a small axial clearance.Its values during operation of the vehicle can be increased.This happens due to the gradual deterioration of parts.Therefore, the gap is not exceeded, this hub has a special adjustment device.
Cars most often completed with ball bearings units.These bearings are filled in the mechanism lubricant which is present in the system at all times of operation.Since grease is durable, the hub of the front wheel does not require periodic maintenance, respectively, adjustments too.By the way, now many manufacturers equip hub with special sensors (such as ABS, etc.), so even the cheapest item today is about 2.5 thousand.
And finally, we note a few manufacturers that supply the Russian market quality parts.This production NSK, NTN, KOYO and SNR.Hubs from these manufacturers are characterized by their high reliability and low cost.
