Whether the crossed roller bearing is installed correctly will affect the accuracy, life and performance of the bearing. Therefore, the design and assembly department must fully study the bearing installation. Hope to install as required. Bearing installation needs to use the correct method and also pay attention to some installation problems, the specific conditions are as follows:
Installation method
The installation method of the cross roller bearing varies with the structure, fit, and conditions of the bearing. Generally, because most of the shaft rotates, the inner ring needs an interference fit. Cylindrical bore bearings are usually pressed in with a press or hot-fitting method. In the case of a tapered hole, install it directly on the tapered shaft or install it with a sleeve. When installed to the shell, there is generally a lot of clearance fit, and the outer ring has an interference. It is usually pressed in with a press, or there is also a shrink-fit method for installation after cooling. When dry ice is used as the coolant, the moisture in the air will condense on the surface of the bearing when the shrink fit is installed. Therefore, appropriate anti-rust measures are required.
Installation Precautions
(1) Open the package before installation. General grease lubrication, without cleaning, can be filled with grease directly.
(2) Cross-roller bearings for instruments or high speeds should be cleaned with clean oil to remove the anti-rust agent coated on the bearings. Bearings with anti-rust agents removed are easy to rust, so they cannot be left alone.
(3) YRT rotary table bearings packed with grease can be used directly without cleaning.
