Q1:What is the function of the gaps in the inner and outer rings of high temperature bearings?

A:Filling/replacing the ball gap, the full complement ball bearing has a ball filling gap on one side, and adopts a non-cage structure design, which can be loaded with more balls than standard structure bearings, thereby improving its radial load capacity. The limitation of the frame material can achieve the effect of corrosion resistance and temperature resistance of the cage type full bearing. This series of bearings is not suitable for high speed. When installing, pay attention to install the notched surface on the end that does not bear the axial load. Because the inner and outer rings of this bearing have ball filling gaps, it is not suitable for applications with large axial loads.

Q2:What is the function of the steel ball in the bearing? Why do we need to drop lubricating oil in it?

A:The steel ball plays the role of supporting the rotating body, and at the same time reduces the frictional resistance, which is 5-10 times smaller than the sliding frictional resistance;
Dropping lubricating oil further reduces frictional resistance, reduces wear, heat dissipation, and prolongs service life.

Q3:What is the role of the liquid oxygen pump motor bearing heater

A:The function of the bearing heater is to heat the inner ring of the bearing, and use the principle of thermal expansion and contraction to increase the size of the inner hole, which is convenient for bearing installation, reduces damage to the bearing during installation, and improves the stability and life of the bearing.

Q4:What does the bearing cover do?

A:The function of the bearing end cover is to axially fix the bearing, and the second is to act as a sealing cover to prevent the bearing from entering the bearing from dust and other damage.

Q5:How to inject grease into deep groove ball bearings

A:The amount of lubricant injected into deep groove ball bearings is strictly regulated. In order not to affect the quality and performance of the product, it must be injected according to the actual situation. A large number of tests have proved that the amount of grease injected has a great influence on the sealing performance of deep groove ball bearings. When the amount of grease injected is about 30% of the internal cavity volume of deep groove ball bearings, since the amount of internal grease has not reached saturation state, so the grease rarely leaks and overflows. When the amount of grease injected exceeds 30%, the volume inside the deep groove ball bearing is saturated. When the amount of grease injected reaches 50%, the lubricating grease in the cavity reaches a fully saturated state, and the excess grease is “squeezed” out. Special attention, sometimes even though the amount of grease injection is not much, the method of grease injection is not standardized and unscientific, which will lead to uneven grease volume in the deep groove ball bearing cavity, local saturation in the deep groove ball bearing, and early rapid “Squeeze” out the phenomenon. As for the grease equalization process, it is recommended that the bearing speed be increased a little. Sealing test and evaluation The test method of sealed deep groove ball bearings is carried out according to the different performance characteristics and uses of sealed bearings. The focus is different, and the test content is also different, but each performance test is very important and Indispensable, at the same time, the test and evaluation method of sealed deep groove ball bearings is also a means of verifying and improving design and quality control.