FAG Bearing Installation Inspection Process And Maintenance Steps

1. Be careful when installing and removing bearings

The installation methods and tools for different types and sizes of imported bearings are also different, including mechanical or hydraulic. Here we mainly explain some common basic installation methods and precautions.
First, do not install hard on the ball, which will cause local overload of the ball and contact surface, resulting in premature failure of FAG bearings.
Second, do not use hard tools, such as hammers, screwdrivers, etc. to hit the surface of the bearing, which will cause the outer ring of the imported bearing to break or crack.

2. Cleaning of bearings

A clean use environment is very important for bearings. The surface roughness accuracy of the rotating surface and rolling element of the imported bearing ring is about 1/10 μm. If the smooth ball surface is contaminated, the impact is very serious. The lubrication layer between the rolling surfaces is usually 0.2~1 μm. Particle-type impurities larger than the lubricant particle size will be excessively crushed by the rolling element and generate local pressure in the spherical roller bearing steel, which will eventually lead to permanent material fatigue. In addition to this, the dust particles in the external environment can reach 10 μm in size and can also cause damage to the spherical roller bearing.

3. Bearing process inspection

During use, the working temperature of the imported bearing is sensed by heat drying. If the temperature exceeds the specified limit, an alarm will be automatically triggered to prevent the occurrence of burning shafts. High temperature often indicates that the bearing is in an abnormal condition. High temperature is also harmful to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the bearing rotates continuously for a long time at a temperature exceeding 125°C, the bearing life will be reduced. The causes of high temperature bearings include: insufficient bearing lubrication, unqualified lubricant, impurities, excessive load, insufficient clearance inside the FAG bearing, and friction caused by the oil seal, etc.
Whether the bearing is installed correctly affects the accuracy, life, and performance. Therefore, the design and assembly departments should fully study the installation of bearings. It is hoped that the installation will be carried out in accordance with the operating standards. The items of the operating standards are usually as follows:
(1) Check the size and finishing of related parts;
(2) Installation;
(3) Supply lubricant.
(4) Clean the bearing and bearing related parts;
(5) Inspection after the bearing is installed;