Several matters needing attention in the assembly and disassembly of precision bearings

When the amount of interference is large, can use heating box, oil bath heating or inductor heating bearings to install, heating temperature range of 80 ℃ ~ 100 ℃, the maximum can not exceed 120 ℃. At the same time, the application of nuts or other appropriate methods to tighten the bearing to prevent the width of the bearing after cooling contraction and the gap between the ring and the shaft shoulder.

When the bearing is installed, equal pressure must be exerted on the circumference of the end face of the ferrule, and the ferrule must be pressed in. Tools such as a hammer must not directly knock the end face of the bearing to avoid damage. In the case of a small amount of interference, you can press the end face of the bearing ring with a sleeve at room temperature, tap the center of the assembly sleeve with a hammer, and press the ring evenly through the sleeve. The assembly force must not be transmitted through the rolling body to avoid direct hammering of the bearing ring. When pressing, ensure that the end face of the outer ring and the end face of the shell shoulder, and the end face of the inner ring and the end face of the shaft shoulder are pressed tightly, and no gap is allowed.

When using mechanical press or hydraulic press, the assembly sleeve must be used for press fitting, and it must be kept in a horizontal state. If there is inclination, the bearing channel will be damaged due to force, resulting in abnormal noise of the bearing. The assembly sleeve should completely contact the entire circumference of the end face of the inner or outer ring of the bearing.