WSBC Bearing Installation

Time：2020.07.23  Source：Roller Bearings Suppliers

As we well known that Whether the bearing is installed well or not will affect the accuracy, life and performance of the bearing,today let us introduce the way of WSBC Bearing installation.

1.Clean the bearing and related parts

For grease lubricated bearings and both sides with oil seal or dust cover, there is no need to clean the seal ring bearing before installation.

2.Check the dimension and finish machining of relevant parts

3.The bearing installation shall be determined according to the bearing structure, size and matching nature of the bearing components. The pressure shall be directly applied to the end face of the tight fitting ring, and the pressure shall not be transmitted through the rolling element.Need WSBC 22224 CA/W33,click here to learn more.

a. Press fit

When the inner ring of the bearing is tightly matched with the shaft, and the outer ring and the bearing seat hole are loose, press the bearing onto the shaft first, and then install the shaft and the bearing into the bearing seat hole. When pressing, place an assembly sleeve (copper or soft steel) made of soft metal material on the end face of the bearing inner ring. The inner diameter of the assembly sleeve should be slightly larger than that of the journal, and the outer diameter diameter of the sleeve should be larger than that of the bearing The inner ring rib is slightly smaller to avoid being pressed on the cage. The outer ring of the bearing is tightly matched with the bearing seat hole. 

When the inner ring and the shaft are in a loose fit, the bearing can be pressed into the bearing housing hole first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the seat hole. If the bearing ring is tightly fitted with the shaft and seat hole, the inner ring and outer ring of the installation chamber should be pressed into the shaft and seat hole at the same time. The structure of the assembly sleeve should be able to tighten the end faces of the bearing inner ring and outer ring at the same time.Click here to learn more about WSBC 22228 CA/W33.

b. Heating coordination

By heating the bearing or bearing seat, the tight fit is transformed into a loose fit by thermal expansion. It is a common and labor-saving installation method. This method is suitable for the installation of bearings with large interference. Before hot installation, put the bearing or separable bearing ring into the oil tank and heat it evenly for 80-100 ℃. Then, take it out of the oil and install it on the shaft as soon as possible. In order to prevent the inner ring end face and the shaft shoulder from not tight after cooling, the bearing can be tightened axially after cooling. When the outer ring of the bearing is tightly matched with the bearing seat made of light metal, the hot mounting method of heating the bearing seat can avoid the scuffing of the mating surface.

When heating the bearing with the oil tank, there should be a grid at a certain distance from the bottom of the box, or the bearing should be hung with a hook. The bearing should not be placed on the bottom of the box to prevent impurities from entering the bearing or heating unevenly. There must be a thermometer in the oil tank. The oil temperature should not exceed 100 ℃ to prevent tempering effect and reduce the hardness of the ring.

c. Installation of tapered bore bearing

The tapered hole bearing can be directly installed on the tapered journal or on the conical surface loaded with the tightening sleeve and the unloading sleeve. The tightness of the bearing can be measured by the reduction of the radial clearance of the bearing. Therefore, the radial clearance of the bearing should be measured before installation. During the installation, the clearance should be measured frequently until the required clearance reduction is achieved. The locking nut is generally used for installation, Heating installation can also be used.

Should you have any other question about Bearings installation,you may contact us freely.