How to distinguish the quality of stainless steel bearings

Stainless steel bearings are divided into five steps:

1. Look at the material, the stainless steel of stainless steel bearings can be derived from their hardness and precision.

Looking at it above, good stainless steel bearings in this regard are much higher than inferior stainless steel bearings.

2. We can observe the stainless steel bearing with the naked eye to see whether the raceway from the inside and outside is an arc groove, whether there are traces of peeling, whether there are cracks and peeling on the surface of the rolling, and whether the whole frame is loose.

3. From the feel of identification, the gap between the inner and outer rings of the normal stainless steel bearing and the rolling element will not be too large, when we hold the inner seat ring for shaking, see if it has obvious shaking, if there is, then it is an inferior stainless steel bearing.

4. If the stainless steel bearing is rotated, if it is not flexible enough and has a sense of obstruction during the rotation, or the stainless steel bearing shakes when it rotates, it is also an inferior stainless steel bearing.

5, this piece, we always have to believe in a word, a penny a penny of the truth, can not be because of greed and cheapness and let their losses be greater, if the stainless steel bearing is much lower than the market normal, then you have to be careful, this may be shoddy, because the cost of stainless steel bearing itself is relatively high, if the cost is too low, even the basic cost is impossible to achieve, how can it be a really good high-quality stainless steel bearing.

1. The fatigue life of all-ceramic bearings can be 10 to 50 times longer than that of all-steel bearings, and the life of hybrid ceramic bearings will be about 3-5 times longer than that of all-steel bearings; In terms of service life, ceramic bearings are much higher than stainless steel bearings. 2. The friction coefficient of ceramic bearings is low, so the lubrication capacity of oil-lubricated ceramic bearings is still not lower than that of traditional lubricants commonly used in steel bearings when the lubricating oil is thin or lacking; 3. The rigidity of ceramic bearings is greater than that of stainless steel bearings, the elastic modulus of ceramic materials is high, and its rigidity is 15-20 greater than that of ordinary steel bearings. 4. Compared with stainless steel bearings, ceramic bearings are more resistant to corrosion and wear.

Because of the different materials themselves, the corrosion resistance and wear resistance of ceramic bearings are more excellent than those of metal bearings.

Bearing steel generally has a relatively high carbon content to enhance wear resistance, while stainless steel generally has a relatively high CR content of more than 12%, mainly to take advantage of its corrosion resistance. Compared with ordinary bearings, stainless steel bearings not only have obvious advantages in material, but also in terms of process and precision control, which are much stricter than ordinary bearings.

In the working process, the stainless steel bearing works stably, with low noise, corrosion resistance, and is widely used. The bearing ring and rolling element material are made of AISI SUS440C stainless steel (domestic number: 9Cr18Mo, 9Cr18) after vacuum quenching and tempering, and the cage and sealing ring skeleton material are made of AISI 304 stainless steel (domestic number:

1cr18）。

Compared with ordinary bearing steel, stainless steel bearings have stronger rust and corrosion resistance, and can be used in an environment of -60 +300 with the right lubricant and dust cap. Stainless steel deep groove ball bearings are resistant to corrosion caused by moisture and several other media.

These single row deep groove ball bearings have the same deep groove groove grooves as standard deep groove ball bearings made of carbon-chromium (rolling bearing) steel, and the coordination between the bearing raceway and the ball is extremely high. Stainless steel bearings are widely used in food processing, medical equipment, and pharmaceutical machinery due to their high mechanical strength and large load capacity.

Advantages of stainless steel bearings.

1. Good corrosion resistance: stainless steel bearings are not easy to rust and have strong corrosion resistance.

2. Washable: stainless steel bearings can be washed down without having to re-lubricate to prevent rust penalty.

3. Can run in liquid: Due to the materials used, we can run in liquid bearings and housings.

4. Slower depletion rate: AISI 316 stainless steel, no oil or grease anti-corrosion protection is required. Therefore, if the speed and load are low, lubrication is not necessary.

5. Hygiene: stainless steel is naturally clean and does not corrode.

6. High heat resistance: stainless steel bearings are equipped with high temperature polymer cages or cages that do not have a complete complement structure, which can operate at higher temperatures ranging from 180°F to 1000°F. (High temperature resistant grease required).

Disadvantages of stainless steel bearings.

1.High cost: The specific defect of stainless steel bathroom hardware pendant is high cost, high price, and it is usually difficult for consumers to consume.

2.Fracture failure of stainless steel bearings.

This is usually due to a defect in the bearing itself, or due to a long-term load. When the applied load exceeds the strength limit of the material and causes the part to break, it is called load fracture. The main reason for the load is the sudden failure of the main engine or the improper installation of the stainless steel bearing.

<> temperature anomalies are elevated.

If the lubrication of stainless steel bearings is insufficient in practical use, it is very easy to cause the problem of temperature rise, so the lubricating oil should be replenished immediately, and attention should be paid to check the oil circuit to ensure smoothness. If the lubricating oil contains too much residue, it must be cleaned and filtered immediately to ensure that the lubrication is clean. If it is caused by an abnormal installation, it must be adjusted immediately.

Advantage 1. Excellent corrosion resistance:

Most bearing failures are due to corrosion. Stainless steel bearings are not easy to rust and have strong corrosion resistance.

2。Washable down:

They can be washed down without having to re-lubricate to prevent the penalty of rust.

3。Can run on liquid:

Due to the materials used, we are bearings and housings that can be run in liquids.

4。Made of Food + Medical Materials (FDA+NSF).

5。Slower rate of depletion:

AISI 316 stainless steel, no oil or grease corrosion protection is required. Therefore, if the speed and load are low, lubrication is not necessary.

6。Non-magnetic stainless steel.

Austenitic stainless steels, such as AISI316, are not generally considered magnetic materials. The basic composition of the metal is 18-8 chromium-nickel with molybdenum additives.

7。Hygiene: Stainless steels are naturally clean because they do not corrode, or in some applications the bearings need to be lubricated.

8。High heat resistance:

Stainless steel bearings fitted with high temperature polymer cages or cages that do not have a complete complement structure can operate at higher temperatures ranging from 180°F to 1000°F. Contact KMS for more information.