Cylindrical roller bearing lubrication restrictions and equipment requirements

Lubrication restrictions: rolling bearings under the low temperature, the starting torque of grease lubrication applications usually increased significantly. The starting torque is not mainly depends on the stability of the grease, and is usually determined by the rheological properties of the grease. The high temperature limit of the grease are usually made of thermal stability, oxidation stability of base oil and the antioxidant efficiency of the decision. Please refer to page 39 'lubrication' section, to know detailed information relating to the limitation of the lubrication. Equipment: equipment designers must assess the effect of temperature on the equipment performance. For example, precision machine tool spindle bearing may is sensitive to thermal expansion. For some main shaft, working temperature is higher than the environment temperature is 20 ° to 35 ° C C require special attention. Most of the industrial equipment can work under high temperature. For example, transmission gears can withstand high temperature of 93 ° C. Gas turbine equipment can under the temperature of 100 ° C above work continuously. Run under the condition of high temperature for a long time, however, if the shaft and bearing seat of improper machining and heat treatment, with the amount could be affected. Although the bearing can be as high as 120 ° C temperature to work properly, but 80 ° C to 95 ° C temperature limit more accord with the actual. High working temperature will increase the instantaneous temperature peak, raised the possibility of TIMKEN bearing damaged. Tested samples according to the specific application, is helpful to determine the operating temperature range. Equipment design personnel should weigh all the relevant factors, and ultimately meet the requirements of working temperature is determined.