If linear bearings are lubricated with oil, they do not have to remove the corrosion resistant oils. According to the temperature changes, ISO viscosity grade VG15-100 can be used. The shaft lubrication can be supplied from the oil supply pipe to the oil hole without or from the outer bearing seat. Since the sealing ring will scrape off the grease, the oil lubrication does not apply to the non porous sealing ring bearing.
At the same time, it is recommended to use the alignment tolerances with the bore of the linear bearing block and the optical axis diameter. Generally, bearings can not be preloaded, but high accuracy and light preload can be added to bearings. However, the negative diameter tolerances shall not exceed the data in the table.
The installation of the bearing box of the linear bearing is divided into standard type, flange type and adjustable type, the three main types.
Linear bearing is a linear motion system produced at low cost. It is used in conjunction with cylindrical shaft for unlimited stroke. Because the ball bearing and the shaft are in point contact, the load is small. The steel ball rotates with minimal frictional resistance so as to achieve high precision stationary motion.