Temperature and noise during operation of INA stainless steel bearings

When the mechanism is running, the part where the INA bearing is installed is allowed to have a certain temperature. When the structure of the mechanism is touched by hand, it should be normal to not feel hot, otherwise the bearing temperature is too high.
The reasons for the bearing temperature being too high are: the quality of the lubricating oil does not meet the requirements or deteriorates, the viscosity of the lubricating oil is too high; the assembly of the mechanism is too tight (the gap is insufficient); the assembly of the stainless steel bearing is too tight; the bearing race rotates on the shaft or inside the casing; Too large; bearing cage or rolling element fragmentation.
Rolling bearings allow a slight running noise during operation. If the sound is too loud or there is abnormal noise or impact, the bearing is faulty.
The causes of noise generated by rolling bearings are more complicated. One is the wear of the inner and outer rings of the bearing. As a result of this wear, the bearing and the housing, the stainless steel bearing and the shaft are broken, causing the axis to deviate from the correct position and produce an abnormal sound when the shaft is moving at a high speed. When the INA bearing is fatigued, the surface metal peeling off will also increase the radial clearance of the bearing to produce abnormal noise. In addition, insufficient bearing lubrication, dry friction, and bearing crushing can produce abnormal sounds. After the bearing wears loose, the cage is loose and damaged, and the abnormal bearing damage will also occur.
1, tile surface corrosion: spectral analysis found that the concentration of non-ferrous metal elements is abnormal; there are many sub-micron wear particles of non-ferrous metal components in the iron spectrum; lubricating oil moisture exceeds the standard, acid value exceeds the standard.
2, the surface of the journal is strained: there are iron-based cutting abrasive grains or black oxide particles in the iron spectrum, and there is tempering color on the metal surface.
3, the surface corrosion of the journal: Spectral analysis found that the concentration of iron is abnormal, there are many sub-micron particles of iron in the iron spectrum, and the moisture of the lubricating oil exceeds the standard or the acid value exceeds the standard.
4, surface strain: found in the iron spectrum cutting abrasive particles, abrasive particles are non-ferrous metals.
5, fretting wear behind the tile: spectral analysis found that the iron concentration is abnormal, there are many iron components in the iron spectrum sub-micron wear particles, lubricating oil moisture and acid value is abnormal.
Impact sound of rolling element and its control method When a large type of ball bearing or bearing runs at low speed under pure radial load, the rolling element in the non-loading area will impact the cage or raceway due to the small centrifugal force of the rolling element. And the noise is emitted. But as the speed increases, the sound will disappear.
INA bearing raceway sound and its control method The raceway sound is a slippery continuous sound that the rolling element rolls on the raceway surface when the bearing is running. It is the unique basic sound that all stainless steel bearings will produce. The general bearing sound is the rolling sound plus other sounds. The ball bearing's raceway sound is irregular, the frequency is above 1000Hz, its main frequency does not change with the speed, but its sound pressure level increases with the increase of the speed.https://www.supplyforever.com/

Classification and application of bearings

Core Tip: The most representative rolling bearing of deep groove ball bearing is widely used to withstand radial load and bidirectional axial load. It is suitable for high speed rotation and low noise and low vibration.
The most representative rolling bearing of deep groove ball bearing is widely used to withstand radial load and bidirectional axial load. It is suitable for high speed rotation and low noise and low vibration. Sealed bearing with steel dust cover or rubber sealing ring Pre-filled with a proper amount of grease outer ring with snap ring or flange bearing, which is easy to axially position, and easy to install in the outer casing. The maximum load type bearing is the same size as the standard bearing, but there is a filling in the inner and outer rings. Groove, increased ball loading, improved rated load Mainly applicable cage: steel stamping cage (waveform, crown shape...single row; S-shaped...double row) copper alloy or phenolic resin cutting cage, synthetic resin forming and retaining Main use of the frame: Automobile: rear wheel, transmission, electrical components, electrical: general-purpose motor, household appliances, other: instruments, internal combustion engines, construction machinery, railway vehicles, loading and unloading machinery, agricultural machinery, various industrial machinery angular contact ball bearing rings There is a contact angle with the ball. The standard contact angle is 15°, 30° and 40°. The larger the contact angle, the greater the axial load capacity. The higher the contact angle Smaller, more favorable for high-speed rotating single-row bearing can withstand radial load and one-way axial load DB combination, DF combination and double-row bearing can withstand radial load and two-way axial load DT combination for one-way axial load is large, High-speed ACH-type bearings have a small ball diameter and a large number of balls. They are mostly used for machine tool spindle angular contact ball bearings. They are suitable for high-speed and high-precision rotating structures. Common inner and outer rings, can withstand radial load and two-way axial load. No-fill groove bearing. Also sealed. Mainly applicable cage: steel stamping cage (bowl shape...single row; S-shaped, crown-shaped...double row) copper Alloy or phenolic resin cutting cage, synthetic resin forming cage Main use: single row: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, small car front wheel, differential pinion shaft double row: oil pump, Luo Ventilators, air compressors, various types of transmissions, fuel injection pumps, printing machinery, four-point contact ball bearings can withstand radial loads and two-way axial loads. Angular contact ball bearings with front or back combination are suitable for composite loads with a large axial load or large axial load. These bearings can form one contact angle (α) when subjected to axial loads in any direction. Therefore, the ferrule and the ball always touch the two sides of the three-point point on any contact line. The main suitable cage: the copper alloy cutting cage main use: aircraft jet engine, gas turbine self-aligning ball bearing because the outer ring raceway surface is spherical, With self-aligning performance, it can automatically adjust the shaft-concave tapered bore bearing caused by the deflection or misalignment of the shaft or the outer casing. It can be easily mounted on the shaft steel stamping cage by using fasteners: daisy...12,13 22...2RS, 23...2RS sunflower shape...22,23 Woodworking machinery, textile machinery drive shaft, vertical belt bearing, self-aligning bearing, cylindrical roller bearing, cylindrical roller, roller contact with the raceway, radial load capacity, ie Suitable for heavy load and impact load, also suitable for high-speed rotation N-type and NU-type axial movement, can adapt to the change of relative position of shaft and shell caused by thermal expansion or installation error It is most suitable for use as a free end bearing NJ type and NF type can withstand a certain degree of unidirectional axial load, NH type and NUP type can withstand a certain degree of bidirectional axial load. The inner ring or outer ring can be separated, and it is easy to assemble and disassemble NNU type. And NN type is strong in rigidity against radial load

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