Generally speaking, the bearing of the rolling bearing itself does not produce noise. In fact usually feel bearing noise is bearing, directly or indirectly, with the surrounding structure vibration sound effects.
This is why many times the noise can be seen as involving the vibration problems of the application of the sliding bearing. Due to loading quantity change of vibration roller when a load on a bearing radial load, the number of rolling element bearing load will be a slight change in the operation, i.e., the 2-3-2-3... This caused the load in the direction of migration. The resulting vibration is inevitable, but can be by axial preload to ease, loading in all rolling body (do not apply to the bearing of the cylindrical roller bearing) SKF Bearing http://www.skfbearing-china.com/ .
The waviness on bearing ring of the self-contained parts or close coordination between the shaft and bearing ring with adjacent components are likely to match the shape and deformation. If there is a deformation, can produce vibration in the operation. Therefore, the bearing and the shaft are machined to the required tolerance is very important.
Local damage due to the operation or installation errors, a small number of bearing raceway and rolling element may be damaged. In running, rolled TIMKEN bearing damaged parts will produce a particular vibration frequency. Vibration frequency analysis can identify the damaged bearing parts. The vibration behavior of applications in many applications, the sliding bearing stiffness with the surrounding the stiffness of the same structure. Due to this characteristic, can choose correctly bearing (including preload and clearance) and its application in the configuration, it is possible to reduce the vibration in the application.
1. The compatibility of friction
Bearing diameter of axle adhesion and avoid direct contact with bearing bush attack form border smooth performance. Affect the friction pair friction compatibility of data elements are:
(1) into a vice information on metallurgical alloy difficulty levels.
(2) data and affinity to smooth agent.
(3) into a vice materials without the friction factor of smooth condition.
(4) data of microstructure.
(5) the data of thermal conductivity.
(6) data can appearance size and characteristics of the oxide film.
2. The clamp in the sex
Data to allow smooth agent in foreign clamp into the hard particle and avoid scratch or (and) of abrasive wear ability. For metallic materials with low hardness and elastic modulus, clamp in the sex is good, and the nonmetallic materials is not necessarily, carbon graphite, for example, low elastic modulus, but the clamp in the sex is bad. Sliding bearing usually use soft material and hard material forming friction, ordinary do bearing shell with soft materials.
3. In sex
Bearing in the process of the adaptation of the diameter of axle and bearing, reduce the diameter of axle and bearing shell processing error, alignment error, surface roughness parameter values, make contact with average, thereby reducing the friction and wear rate.
4. The friction compliance
Sliding friction material on the surface of elastic-plastic deformation compensation initial appearance to match the performance of the poor and shaft deflection. Low modulus of elasticity of material compliance is good.
5. Wear resistance
As vice materials can resist abrasion. Under the condition of the rules of wear, wear rate or amount of wear, wear the reciprocal of abrasion resistance.
6. The fatigue resistance
Under the cyclic load data can resist fatigue damage. The use of temperature, the strength of the bearing shell material, hardness, resistance to impact strength and organization average opposite tiredness is very important. Running-in, clamp into good data, usually poor fatigue resistance.
7. The corrosion resistance
Data can resist corrosion. Smooth oil used in atmosphere will gradually oxidation, produce acidic substances, and in most smooth oil also contains extreme pressure additives, they all corrosion bearing information, therefore, sliding bearing information requirements have corrosion resistance.
The cavitation resistance 8.
Motion state, the related to the liquid when the bubble in liquid solid appearance full break, a part of the impact high temperature high pressure or part, will cause cavitation and wear. Data against cavitation and wear can be referred to as cavitation resistance. Usually, copper lead and tin base outside the spherical bearing alloy and aluminium zinc silicon alloy has good cavitation resistance.
9. The compressive strength
Sliding bearing one-way load without being crushed or size can not change.