Installation tips for industrial bearings
As a professional industrial bearings manufacturer, Wuxi Spark Bearing has summarized a lot of industrial bearing installation skills during the production and research and development process. We are very willing to share these skills with every industrial bearing user.
1.Use copper rod and manual hammer to install
This is an easy way to install small and medium-sized bearings. When the inner ring of the bearing is a tight fit and the outer ring is a loose fit, the copper rod is pressed against the end face of the inner ring of the bearing, the copper rod is directly struck with a hammer, and the bearing is slowly installed on the shaft through the copper rod to transmit the force. When the bearing inner ring is large, copper rods can be used to strike it evenly around the end face of the bearing inner ring. Don't hit only one side, and don't use too much force. Symmetrical tapping, gently tapping slowly to avoid oblique cracking. .
2.Using sleeve installation
This method is the same as using copper rods to install bearings. It presses the sleeve directly on the bearing end face (presses the end face of the inner ring when the bearing is mounted on the shaft; presses the end face of the outer ring when it is installed in the housing hole), and the force of the hammer can be evenly distributed on the installation. The entire bearing of the bearing is on the end face, and can be used in conjunction with the press, which saves labor and time and is reliable in quality. The sleeve used for installation shall be made of soft metal (copper or low carbon steel pipe can be used). If the bearing is installed on the shaft, the inner diameter of the sleeve should be slightly larger than the journal 1-4mm, the outer diameter is slightly smaller than the diameter of the bearing inner ring flange, or the thickness of the sleeve shall prevail, and its thickness shall be made equal to the thickness of the bearing inner ring. 2 / 3-4 / 5, and both ends of the sleeve should be flat and perpendicular to the barrel. If the bearing is installed in the seat hole, the outer diameter of the sleeve should be slightly smaller than the outer diameter of the bearing.
3.Pressing method of press
The mounting pressure should be directly applied to the end face of the bearing ring with an interference fit, otherwise it will cause a pressure injury on the working surface of the bearing and cause the bearing to be damaged quickly.
4, heating installation
For bearings with large interference or large size bearings, in order to facilitate installation, the principle of thermal expansion and contraction can be used to heat the bearings in the fuel tank with copper rods, sleeves and hand hammers. The temperature during heating is generally controlled below 100 ° C, and 80-90 ° C is more suitable. When the temperature is too high, it is easy to cause the bearing ring raceway and rolling body to anneal, which affects the hardness and wear resistance, resulting in reduced bearing life and premature scrap.
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