Are there requirements for mounting surfaces and mounting sites? Yes installation. If the mounting surface is coated with lubricant.
In lubrication li. Such as with overfill more suitable for low temperature, high speed, high viscosity for high temperature, high load. Thickener is also related to the lubrication performance, the water resistance of thickener determines the water resistance of grease. In principle, greases with different brands cannot be mixed, and, even for greases with the same thickener, the additives will be different. The basic radial clearance group is applicable to the general operating conditions, conventional temperature and common interference fit; in high temperature, high speed, low noise, low friction and other special conditions of the work of the bearing is appropriate to choose a large radial clearance; on the precision spindle, machine tool spindle with bearings, etc. should choose a smaller radial clearance; for roller bearings can keep a small amount of work clearance. In addition, for the separation type bearing is indifferent clearance; Finally, the working clearance of the bearing after installation, to be smaller than the original clearance before installation, because the bearing should bear a certain load rotation, and. If there are iron shavings, burrs, dust and other foreign matter into the bearing, it will make the bearing noise and vibration when running, and even damage the raceway and rolling body. Therefore, before mounting the bearings, you must make sure the mounting surface and mounting environment are clean. What is the best way to do this? Must the bearing be cleaned before mounting? The bearing surface is coated with antirust oil. You must clean it carefully with clean gasoline or kerosene, and then apply clean and high quality or high speed high temperature lubricating grease before mounting. Cleanliness can have a significant impact on bearing life and vibration noise. However, we would like to remind you in particular: fully enclosed bearings do not need to be cleaned and oiled. How to choose grease? How to choose grease lubrication on the operation and life of the bearing has an extremely important impact on the bearing, bearing, grease coated with more the better? bring bad influence on each other Great, the bearing should be put into mineral oil and heated to 80~90℃ and then installed as soon as possible, strictly control the oil temperature not to exceed 100℃ to prevent the tempering effect hardness reduction and affect the size recovery. In the disassembly encountered difficulties, you are recommended to use the disassembly tool to pull outward at the same time 5 groups, clearance value in order from small to large, where 0 groups for the standard clearance Lubrication bearing, the more grease coated the better, this is a common misconception. Too much grease in bearings and bearing chambers will cause excessive agitation of the grease, resulting in extremely high temperatures. Bearings are filled with lubricant in quantities to carefully pour hot oil onto the inner ring, the heat will cause the bearing inner ring to expand, thus making it easier to dislodge. ? Is the smaller the radial clearance of the bearing the better? Not all bearings require a minimum working clearance, you must choose the right clearance according to the conditions. National standard 4604-93, rolling bearing radial clearance is divided into five groups-2 groups, 0 groups, 3 groups, 4 groups, full of bearing internal space 1/2 to 1/3 is appropriate, high-speed should be reduced to 1/3. ? How to install and disassemble
Do not directly hammer the bearing end face and non-stressed surface, should be pressed block, sleeve or other installation tools (tooling) to make the bearing evenly stressed, do not transmit power through the rolling body bearing with the amount of elastic deformation generated by the load. This will make the installation more smoothly here to briefly introduce you to the general principles of grease selection. Grease is made of base oil, thickener and additives, different types and the same type of different grades of grease performance varies greatly, allowing different rotational limits, in the selection must pay attention to. The performance of grease is mainly determined by the base oil, generally low viscosity base oil