Oil-free bearing, tin bronze sleeve, bimetal sleeve

Oil-free bearings have the characteristics of high load-bearing capacity, impact resistance, high temperature resistance, and strong self-lubricating ability. They are especially suitable for heavy loads, low speeds, reciprocating or swinging situations where it is difficult to lubricate and form an oil film. The following is introduced by the editor. Key points to note when installing oil-free bearings
. Determine whether there are any bruises or protrusions on the mating surfaces of the shaft center and shaft shell
. Whether there is dust or molding sand attached to the surface of the bearing shell.
. Even if there are minor bruises, protrusions, etc., use a pumice stone or fine sandpaper to remove them.
. In order to avoid damage during installation, a small amount of lubricating oil should be applied to the surface of the shaft and shaft housing. When the bearing is installed on the shaft center, force must be applied on the inner ring. When the bearing is installed on the bearing shell, force must be applied on the outer ring. When applying force to the bearing, be sure to make the force vertical and even downwards. If the force is deflected, the bearing will be injured. For this reason, absolutely
try to avoid missing shots.
.For oil-free bearings, the retainer and sealing plate of the bearing must not be stressed. The installation method of using a hammer and casing is a commonly used method. Because it will damage the bearing, it must not be hit directly. Be sure to tap it in with the sleeve in the middle as shown in the picture. The hammer should be struck lightly. In terms of mechanical structure, when both the inner and outer rings are tightly fitted, a backing plate should be used to ensure that force can be applied to the inner and outer rings at the same time to press them in. If only the inner ring is pressed in with force, the force must be passed through the balls to press into the outer ring, thus causing scratches on the raceway surface. When installing a bearing with a large margin on a shaft, the installation method of heating the bearing to ~°C in clean oil to expand the inner diameter is widely used.
.The hardness of the bearing may be reduced due to overheating, so it must not exceed the limit. At this time, the bearing must be suspended by steel wire, or placed on a metal wire
support plate, and must not be placed on the bottom of the tank. When the bearing reaches the desired temperature (below degrees), it should be taken out of the groove immediately and quickly put on the shaft. The bearing will shrink as the temperature drops, and sometimes a gap will occur between the shaft shoulder and the bearing end face. , therefore, tools need to be used to tighten the bearing in the axial direction.