Knowledge

Bearing as an important part of machinery, the use of quality is the first choice of bearing, in the production process to improve the quality of bearing, mainly from the five elements in production to improve the quality of bearing requirements.

In 1992, a president in Taiwan proposed the famous "smile curve". The horizontal axis of the curve was divided into three sections from left to right: the left section was technology and patents;The middle section is assembly and manufacturing;The right section is brand and service, and the vertical axis is value added, which represents profit margin.For the traditional manufacturing service industry, it can be seen from the smile curve that the two ends bring higher added value to the enterprise, while the manufacturing in the middle is the link with the lowest added value.

According to price index of steel of steel association in China and black department futures main force contract price, this year steel price should be higher than the same period last year level, but price trend of different steel products begins to differentiate, plank performance is stronger than building materials.

working-conditions-of-bearings

In the process of using SKF bearings, occasionally there is a phenomenon of heat, but we can't know the specific cause, so we need the help of technical personnel to solve the problem of abnormal heat in SKF:

Bearing accuracy

Radial load of bearing，Axial load of bearing，Length compensation of the bearing itself，Length compensation of sliding fit，Separable bearing (precision)

The automobile industry is an important pillar industry in China, which plays an important role in the whole manufacturing industry. Many parts of the car body can be seen bearing figure, it has a load, reduce friction, guide the movement of the special mission. Along with our country economy development and technological progress, China has become, including auto bearing steel bearing production country, but with the German Schaeffler, SKF of Sweden, the United States TIMKEN, Japan KOYO larger gap still exist, such as first-class manufacturer materials as a source of direction in the future is still a strict controls of metallurgical quality, level of non-metallic inclusions and carbide size and distribution, improve the level of heat treatment technology, etc.

Wind power, automotive, steel, machinery

To judge whether the disassembled bearing can be used again, the bearing should be checked after cleaning, carefully check the status of raceway surface, rolling surface, mating surface, cage wear, whether the bearing clearance is increased and whether there is any damage or abnormality affecting the dimensional accuracy. Non-detached small ball bearings, etc., with one hand flat end inner ring, rotation outer ring to confirm whether smooth.

When choosing a bearing, you must consider several important factors. The first factor to consider is the load the bearing can bear. There are two types of loads:

Bearings shall be removed during regular maintenance and replacement. After disassembly, disassembly shall be done with the same care as installation if continued use or inspection is required for investigation. Pay attention not to damage the bearing and parts, especially disassembly interference bearing, the operation is difficult, so in the design stage to consider in advance to facilitate disassembly. It is also important to design and make disassembly tools as needed. During disassembly, according to the drawings, the disassembly method, the sequence, the investigation of the bearing conditions, so that the disassembly operation smoothly.

On the bearing installation (interference assembly) several technical methods and matters needing attention (bearing heater) shaft bearing installation (interference assembly) technical methods and matters needing attention The accuracy, service life and performance of bearing are directly affected by whether the bearing is installed correctly

Thrust centering roller bearing and centering roller bearing is the same, the raceway surface of the seat ring is the spherical surface with the point on the bearing center shaft as the center, this type of bearing roller is spherical, therefore, it has the function of automatic centering, and the axial deflection is not very sensitive.

In order to make the bearings function well, in addition to accurate installation, but also inseparable from the daily maintenance of the bearings, so as to ensure the long-term production of stable operation. The maintenance of bearings is the key to bearing lubrication. There are several methods of bearing lubrication, mainly divided into grease lubrication and oil lubrication. To choose the suitable use of the conditions for the purpose of lubrication. If lubrication is considered, the lubricity of oil lubrication is dominant, but grease lubricating oil can simplify the long length of the structure around the bearing.