1. Are there any requirements for the installation surface and installation site?
If there are foreign objects such as iron filings, burrs, dust, etc. in the spherical roller bearing, the bearing will generate noise and vibration during operation, and even damage the raceway and rolling elements. Therefore, before installation, you must ensure that the installation surface and installation environment are clean.
2. Must the bearings be cleaned before installation?
The bearing surface is coated with anti-rust oil, which must be carefully cleaned with clean gasoline or kerosene, and then cleaned with high-quality or high-speed high-temperature grease to be installed (full-closed bearings do not need to be cleaned and refueled). The effect of cleanliness on bearing life and vibration noise is very large.
3. How to choose grease?
Grease is made of base oil, thickener and additives. The grease performance of different types and different grades varies greatly. The allowable rotation limit is different. Be careful when selecting. The performance of the grease is primarily determined by the base oil. Generally low viscosity base oil is suitable for low temperature and high speed; high viscosity is suitable for high temperature and high load. The thickener is also related to the lubricating properties, and the water resistance of the thickener determines the water resistance of the grease. In principle, different brands of grease cannot be mixed.
4. When lubricating the bearing, the more grease is applied, the better?
When lubricating a bearing, the more grease is applied, the better. This is a common misconception. Excessive grease in the spherical roller bearing and bearing housing will cause excessive agitation of the grease, resulting in extremely high temperatures.
5. How to install and disassemble?
When installing, do not directly hammer the end face of the spherical roller bearing and the non-stress surface. The bearing should be evenly stressed by the clamp, sleeve or other installation tools. If the mounting surface is coated with oil, it will make the installation smoother. If the interference is large, the bearing should be placed in mineral oil and heated to 90~100 °C and installed immediately. When disassembling is difficult, it is recommended that you use the disassembly tool to pull outward while carefully pouring hot oil onto the inner ring. The heat will cause the inner ring of the bearing to expand, making it easier to fall off.
