As the bearing rotates, as the IKO bearing rotates faster, the temperature rise due to the internal frictional heat of the bearing increases. The rotational speed limit is a speed allowable value that can be experienced in sintering, overheating, and continuous operation. Accordingly, the limit speed of various bearings varies depending on the bearing structure, size, cage structure, material, bearing load, lubrication method, and cooling conditions around the bearing.
The clearance of the forklift bearing refers to the amount of movement of the bearing when it is not attached to the shaft or the bearing housing, and the one of the inner ring or the outer ring is fixed, and then the unfixed one moves in the radial or axial direction. According to the direction of movement, it can be divided into radial clearance and axial clearance.
The size of the play during operation has an effect on the rolling fatigue life, temperature rise, noise, vibration and other properties of the IKO bearing. When measuring the clearance of the bearing, in order to obtain a stable measurement value, a specified measurement load is generally applied to the bearing. Therefore, the obtained measured value is larger than the true clearance, that is, the amount of elastic deformation generated by the measuring load is increased.
However, for the roller bearing in the bearing, since the amount of elastic deformation is small, it can be ignored. The internal clearance of the bearing before installation is generally expressed in terms of theoretical clearance.
The lubrication of forklift bearings is to use oil film to separate the relatively moving rolling surfaces from each other, so as not to cause excessive wear due to rough contact. If the user can attach great importance to IKO bearing lubrication technology, it can guarantee stable performance and rotation accuracy during the specified working life.
Lubrication of bearings is divided into grease lubrication and oil lubrication. The advantages of grease lubrication are simple lubrication facilities, grease leakage, and the ability of water, gas and other impurities to enter IKO bearings. Lubricated with oil under heavy load, high speed, high temperature and other working conditions.
Grease consists of a base oil, a thickener and a filler. The viscosity of the base oil plays an important role in the lubricating properties of the grease. The composition of the thickener has an important influence on the properties of the grease, especially the temperature characteristics, water resistance and oil repellency. The filler is mainly used to enhance the resistance of the grease. Gasification, rust prevention, extreme pressure and other properties.
Depending on the type of lubricant, the brand is different and has other properties that are not suitable for high speed rotation. Therefore, the IKO bearing rotation speed exceeds the limit rotation speed of 70% in the bearing size table, and it is necessary to select grease and lubricating oil with excellent high-speed performance.
In the various bearing sizes of forklift trucks, the limit speeds of grease lubrication and oil lubrication are recorded for each IKO bearing. This value is the number of rotations allowed for a standard designed bearing under normal load conditions, grease lubrication, and oil lubrication operation. The value of oil lubrication is based on oil bath lubrication.
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