① The end face of the rolling bearing marked with code should be installed in the visible direction so as to check when replacing.

② The radius of the arc at the shaft journal or the step of the shell hole should be less than the radius of the arc at the corresponding place on the bearing.

③ After the bearing is assembled on the shaft and in the hole of the shell, there should be no skew phenomenon.

④in the two coaxial bearings, one must produce shaft movement with the thermal expansion of the shaft.

⑤ When assembling rolling bearings, dirt must be strictly prevented from entering the bearings.

The assembly of the bearing, must be flexible, low noise, working temperature should not exceed 65℃.

(2) Assembly method

When assembling bearings, the most basic requirement is to make the added axial force act directly on the end face of the ring of the bearing (when mounted on the shaft, the added axial force should act directly on the inner ring, and when mounted on the hole, the added force should act directly on the outer ring).Try not to affect the scroll.The assembly methods include hammering method, press assembly method, hot assembly method, freezing assembly method, etc.

①hammer method

Use a hammer to pad the copper rod and some relatively soft materials and then hammer the method, pay attention to not to make the copper end and other foreign bodies fall into the bearing raceway, do not directly hit the inner and outer ring of the bearing with a hammer or punch cylinder, so as not to affect the accuracy of the bearing or cause bearing damage.

② screw press or hydraulic press assembly method

For bearings with large interference tolerances, screw presses or hydraulic presses can be used for assembly.Before pressing, the shaft and bearing should be laid flat and coated with a little lubricating oil. The pressing speed should not be too fast. After the bearing is in place, the pressure should be removed quickly to prevent damage to the bearing or shaft.

③ hot pack

The hot loading method is to put the bearing in the oil and heat it to 80℃-100℃, so that the inner hole of the bearing is enlarged and fitted to the shaft, which can prevent the shaft and bearing from damage.For the bearing with dust cover and sealing ring, the internal has been filled with grease is not applicable to the hot packing method.

(3) Tapered roller bearing clearance is adjusted after assembly. The main methods are gasket adjustment, screw adjustment, nut adjustment, etc.

(4) When assembling thrust ball bearings, the tight ring and loose ring should be distinguished first. The inner diameter of the tight ring is slightly smaller. The assembled tight ring and shaft remain relatively static when working, and it always depends on the step or the end face of the shaft.