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We in using SKF bearing of process in the often will encountered such as of situation, these situation is how formed of, dang formed Shi the how solution, has been is the large enterprise of technicians most headache of problem, following on TIMKEN bearing in using in the occurred overheating of phenomenon Shi of causes and the solution way to everyone detailed of describes about: grinding district of instantaneous high temperature can make surface must depth (10~100nm) within is heating to above workpiece tempered heating of temperature. In the case did not meet the temperature of austenitic, heated up as the temperature increases, the surface layer-by-layer corresponding to the temperature or high temperature Tempering Tempering microstructure transformation of hardness also declined. Higher heating temperature, hardness and also more powerful.
In grinding, grinding wheel and the workpiece contact zone, can consume a large amount of, produce a lot of grinding heat, causing local instantaneous temperature of the grinding area. Using the theory of linear motion-heat-source heat transfer formula, calculation or the application of IR method under experimental conditions and method of thermocouple measuring instantaneous temperature, instantaneous temperature can be found in 0.1~0.001ms in the grinding zone can be as high as 1000~1500℃. Instantaneous temperature, sufficient to enable the work surface depth of high temperature oxide layer on the surface, non-crystalline, high-temperature tempering, quenching for the second time, or even burn crack and other changes.
Steel surface subjected to instantaneous temperature and oxygen in the air, up into very thin (20~30nm) thin-layer iron oxides. Worthy of note is the metamorphic total layer thickness of the oxide layer thickness and surface grinding test result is the correspondence between the. This indicates that the oxide layer thickness and the grinding process is directly related, are important signs of grinding quality.
For NSK bearing grease with rust. Antirust performance is mainly look at fats soluble, formation of different thickness and different information greases, with varying levels of capacity and rust-proof performance, generally speaking, viscosity and a better fat-soluble oils with poor water resistance, so that the grease in the bearing cavity was filled with water, can also be formed in the steel exterior layer can withstand oil film.
Grease lubrication can be achieved long after a grease filling without supplement and sealing device structure is simple, so widely used. Oil lubrication is relatively simple. Regular lubrication the KOYO bearing service life.
FAG bearing allowed light in sound operation, if the noise is too large or unusual noise or impact sound, then the bearing is faulty.
Causes of noise of rolling bearings are complex, one is the inner and outer rings of bearing surface wear. Because of this wear, damaged bearings works with shell, high temperature bearings and shaft, causes the axis deviates from the correct location, the axis in abnormal sound when fast-moving. Requirements when using pneumatic or hydraulic Assembly, at the time of pressing the touch outside to level up or down status, such as tilt will cause damage to the bearing Raceway due to stress and INA bearing rings. Many manufacturers are considered to be before bearing problems, through our advocacy, electrical machinery plant has been realized mainly insulating paint problem right now. The problem mainly because of the acidity of insulating varnishes containing volatile substances formed under certain temperature, humidity, corrosive substances, causes bearing damage of high temperature corrosion of bearing Raceway.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 4T-30209 NTN | 45 | 85 | 19 |
| 4T-33109 NTN | 45 | 80 | 26 |