TIMKEN self-aligning ball bearing necessary maintenance of important operation significance

TIMKEN bearing grease is usually make a similar viscosity or apparent viscosity, said when, on the viscosity of grease must specify the temperature and shear rate. Similar viscosity index can be used to control the low temperature fluidity and pumping. Measure the self-aligning ball bearing grease performance at low temperature is one of the important index of low temperature torque, namely at low temperature ( - 20 ° c below) Grease block bearing rotational degree of low speed flows, the low temperature torque of the grease by the starting torque and rotation torque after 60 mm average said. The evaporative (TIMKEN bearing grease C) Said in the long-term use under condition of high temperature grease, grease oil volatilization, evaporative as small as possible. The evaporative mainly depends on the nature of the lubricating oil and fat fractions. Oxidation stability is refers to the grease when used in long-term storage or long-term high temperature resistance to heat and oxygen, permanent changes in their ability to maintain its nature will not occur. Due to oxidation, are often free alkali content reduced or free organic acid content increases, drop point drop, dark appearance, appear different smell, consistency, ultimate strength, similar viscosity decreased, generated corrosive product and destroy the material of grease, soap oil separation. In long-term storage of grease, therefore, should be stored in dry and ventilated environment, prevent sun, and shall regularly check free base or free change of the project such as organic acid, corrosion resistance, to ensure its quality and performance. According to the area of use and conditions of use and environmental conditions choose size, precision, with appropriate TIMKEN bearing self-aligning ball bearing life and reliability is the premise. Use parts: self-aligning ball bearing is suitable for predominantly radial load under the combination of radial and axial load, usually with two sets of TIMKEN bearing pair is used, should be mainly in car wheel hub, before and after active transmission parts, such as bevel gear, differential, reducer. Allows speed: under the correct installation, lubrication good environment, allowing for bearing limit speed of 0. 3 - 0. 5 times. Generally under normal circumstances, with 0. 2 times the limit speed for the most appropriate. Allows tilt Angle: self-aligning ball bearing is generally not allowed to have tilted axis relative to the shell hole, if there are any tilt, no more than 2 '. Allow temperature: under normal load, and lubricant has a high temperature resistant performance, and abundant lubrication conditions, general bearing in - are allowed 30℃- Work under the temperature 150 ℃. TIMKEN bearing running clearance in slightly negative, the largest bearing life. But actually should keep bearing the best condition is very difficult, once some using conditions change, the negative clearance increases, thus triggering a significant reduction in the self-aligning ball bearing life or fever. Therefore, often requires choosing initial clearance, running clearance off for only a slightly greater than zero.