Many causes loss of SKF bearings, all design and manufacturing process factors are associated with the loss of bearing, not a good judge. But in general, we can consider two aspects from the use and internal factors and analysis.
Use of factor loss SKF bearing refers to the installation and adjustment, maintenance, maintenance and repair compliance with technical requirements. Installation conditions is one of the leading factors in the use factor, SKF bearings are often caused by the installation of inappropriate stress state between the parts of the whole set of bearing change, functioning and loss of bearing an abnormal state.
1 friction compatibility: bearing shaft diameter of direct contact with the bearing to avoid the onset of adhesion and constitute the performance of smooth border.
2 clamping: data allow smooth agent of foreign hard particles clamping and avoid scratching or ( and ) abrasive wear ability. For metallic materials, low hardness and elastic modulus of low, clamping is good, but not the metal material is not certain, for example carbon graphite, lower elastic modulus, but clamping is not good. SKF bearing friction pieces generally with a soft data and hard data, the general use soft information bearing.
3 the running-in: SKF bearings in the shaft and bearing running-in process, reduce the diameter of shaft and bearing machining error, concentricity error, surface roughness parameter values, the average contact, thus reducing the friction, wear rate to.
4 friction compliance: data on the surface of the elastic-plastic deformation compensation SKF friction surface with bad performance of initial deflection and shaft. A low modulus of elasticity material of good compliance.
5 wear resistance: from data to resist wear. In the wear rule condition, with reciprocal wear rate or wear, wear to wear resistance.
6 fatigue: under cyclic loading to resist fatigue damage to data. In the use of temperature, bearing strength, hardness, the impact strength and average antagonism tired of is very important. The running-in, clamping good information, usually fatigue sex difference.
7 Corrosion resistance: data to resist corrosion ability. Application of lube oil in the atmosphere will gradually oxidation, produce acidic substances, but also containing extreme pressure additives in most oil, they will erode SKF bearing materials, therefore, the demand of SKF bearing materials with corrosion resistance.
8 corrosion: solid phase on the liquid motion state, when to break the bubbles in the liquid on the solid surface nearby, generating part of impact pressure or temperature, will cause the cavitation erosion. Resistance to cavitation erosion will be known as the cavitation erosion resistance. Usually, good corrosion resistance, copper lead alloy bearing alloy and aluminium zinc silicon alloy.
9 compressive strength: SKF bearing unidirectional load and not crush or size does not change to.