It shall be determined according to the structure, size and matching nature with bearing components of NTN bearing. Therefore, adequate Methods Of Ntn Bearing research in the design, installation and assembly department. To install according to standard. The tasks of this project are as follows: common standards
Before NTN bearing installation, the machining quality of shaft, seat hole and relevant parts (such as dimensional accuracy, shape Methods Of Ntn Bearing accuracy and surface roughness) shall be checked with appropriate measuring tools according to the technical requirements on the design drawing.
If there are bumps, burrs, rust spots or solid particles (such as wear debris, sand and soil) on the assembly surface of the shaft and seat hole, it will not only make the installation of NTN bearing difficult and the installation position incorrect, but also the solid particles will play a grinding role if they fall into the bearing, and the working surface of the bearing will be abraded or scratched when the NTN bearing rotates,
Therefore, it must be carefully checked before installation. If the above defects are found, they should be corrected. For example, use an Methods Of Ntn Bearing oil file to remove burrs, raised bumps and rust spots, and polish them with fine abrasive cloth, such as cleaning solid particles, dirt, etc.
The assembly surface shall be cleaned with clean gasoline, kerosene, toluene or xylene solution, wiped dry with clean cloth, and then coated with a thin layer of lubricating oil, which Methods Of Ntn Bearing can make the installation and operation more convenient.
The inner ring of NTN bearing is tightly matched with the shaft, and the outer ring is loosely matched with the shell. Press the bearing on the bearing with a press, and then install the shaft together with NTN bearing into the Methods Of Ntn Bearing shell. When pressing, pad a soft metal assembly sleeve (copper or soft steel pipe) on the end face of the bearing.
The inner diameter of the assembly sleeve shall be slightly larger than the journal diameter, and the outer diameter shall be less than the flange diameter of the bearing inner Methods Of Ntn Bearing diameter to avoid pressing on the cage. When installing NTN bearings in large quantities, a handle can be added to the sleeve.
The end face of the assembly sleeve shall be made into a ring that can compress the end faces of the inner and outer rings of the bearing at the same time, or a disc and assembly Methods Of Ntn Bearing sleeve shall be used to transfer the pressure to the inner and outer rings at the same time, and press the bearing into the shaft and shell.
This installation method is especially suitable for the installation of centripetal spherical bearings with automatic centering. The outer ring of NTN bearing is tightly matched with the shell hole, and the inner ring is loosely matched with the shaft. The bearing can be pressed into the shell first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the shell hole.
Heating installation: before hot installation, put NTN bearing or Methods Of Ntn Bearing separable bearing ring into oil tank or special heater and heat it evenly to 80 ~ 100 ℃ (no more than 100 ℃).
Lubrication has a very important impact on the operation and service life of SKF bearings. Here we briefly introduce the general principles of selecting grease. Lubricating grease is made of base oil, thickener and additives. The performance of different types and different brands of lubricating grease of the same type varies greatly, and the allowable rotation limit is different.
Pay attention to it when selecting. The performance of grease is mainly determined by the base oil. Generally, the base oil with low viscosity is suitable for low temperature and high speed, and the base oil with high viscosity is suitable for high temperature and high load.
The water resistance of thickener determines the water resistance of grease. In principle, greases of different brands cannot be mixed, and even greases with the same thickener will have bad effects on each other due to different additives.