Shaft bearing installation skills and precautions Whether the bearing is installed correctly directly affects the accuracy, life and performance of the bearing when it is used.

01. Installation using copper rods and manual hammering This is an easy way to install small and medium-sized bearings. When the inner ring of the bearing has a tight fit and the outer ring has a looser fit, put the copper rod close to the end face of the inner ring of the bearing, directly hit the copper rod with a hammer, and transfer the force through the copper rod to slowly install the bearing on the shaft. When the inner ring of the bearing is large, you can use a copper rod to strike evenly around the end face of the inner ring of the bearing. Do not strike only one side or excessive force. You should strike symmetrically, and gently strike to install slowly, so as to avoid oblique cracking of the bearing. 

02. Use sleeve installation This method is the same as using copper rods to install the bearing. It presses the sleeve directly on the end face of the bearing (pressing the end face of the inner ring when the bearing is installed on the shaft; pressing the end face of the outer ring when it is installed in the housing hole), and the striking force of the hand hammer can be evenly distributed in the installation The bearing on the end face of the entire ring can be used in conjunction with a press, saving labor and time in installation, and reliable in quality. The sleeve used for installation should 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, and the outer diameter should be slightly smaller than the rib diameter of the bearing inner ring, or the thickness of the sleeve shall be the same as 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.

03. There is also a press-in method: the installation pressure should be directly applied to the end face of the bearing ring of the interference fit, otherwise it will cause crushing on the bearing working surface and cause the bearing to be quickly damaged.