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Bearing Selection Guide
Release time：
2023-09-21 08:47
Source：
1, whether the packaging is clear
In general, regular manufacturers of brands have their own specialized designers to design the packaging, and production conditions to arrange for the production of factories to produce production, therefore, the packaging of the product from the line to the color block should be very clear, unambiguous.
2, whether the word is clear steel printing
Each bearing product will be printed on the bearing product body with its brand name, labeling, etc.. Although the font is very small, but the products produced by regular manufacturers have adopted the steel printing technology printing, and in the heat treatment before the pressure of the word, so its font is small, but the concave deep, very clear. Usually, the fonts of counterfeit products are not only fuzzy, but also due to the rough printing technology, the fonts are floating on the surface, and some of them can even be easily wiped away by hand or with serious manual traces.
3、Whether there are noises
Hold the inner sleeve of the bearing with your left hand, and then turn the outer sleeve with your right hand to make it rotate in a small range, and listen to whether there is any noise during the running of the bearing. Due to the backward production conditions of most counterfeit products, completely handmade workshop operation, in the production process, the bearing body will inevitably be mixed with dust, sand and other impurities, so there will be a noise when the bearing is rotating or the phenomenon of not running smoothly. This point is to determine whether the product is from the production standard is strict, and with the machine operation of the regular manufacturers of brand-name products the key.
4, surface
Whether the surface of the cloudy oil stains which require us to buy imported bearings should pay special attention. Because of the domestic rust technology and foreign advanced manufacturing countries still have a certain gap, so the bearing body rust treatment is easy to leave thick traces of oil, feel sticky and thick when contacted by hand, while the original foreign imported bearings on the almost invisible traces of any rust oil. According to industry insiders, especially careful people can smell a special flavor on the imported bearings, which is the flavor of anti-rust oil.
5, chamfering is uniform
The so-called chamfering of bearings, that is, the intersection of horizontal and vertical surfaces, counterfeit bearing products due to the limitations of the production technology, these edges and corners of the parts of the treatment is not satisfactory, which we can easily identify.
6、Packaging
Bearing packaging is divided into inner packaging and outer packaging
Bearings in the manufacturing is completed and after passing the inspection, that is, cleaning and rust treatment, and then put into the inner packaging to achieve waterproof, moisture-proof, dust-proof, shock-proof, maintenance of the quality and accuracy of the bearing and the purpose of easy to use and sell.
Bearing packaging is divided into three categories according to the rust prevention period:
①Short rust-proof period packaging: rust-proof period of 3 to 6 months, applicable to large quantities shipped to the same subscriber, short-term will be put into use of the bearing. By mutual agreement, in order to facilitate the principle of use, the use of simple packaging.
② General rust-proof period packaging: rust-proof period of one year, applicable to general-purpose bearings.
③Long antirust period package: antirust period of two years, applicable to special-purpose and precision bearings.
Bearing packaging materials within the polyethylene plastic tube (box), kraft paper, plain and wrinkled polyethylene composite paper, cardboard boxes, polyethylene or polyethylene plastic film, nylon fastening tape or plastic compilation of fastening tapes, waterproof high-strength plastic belts, burlap bags and so on. All of the above materials are required to ensure that the material passes the corrosion resistance test.
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The causes of rolling bearing heat and its elimination methods
Bearing precision is low: choose the specified precision grade bearing. Spindle bending or box hole is not centered: repair the spindle or box.
Dismantling of bearings is carried out for regular maintenance and bearing replacement. After disassembly, if the bearings continue to be used, or if it is necessary to check the status of the bearings, the disassembly should be carried out with the same care as when they are installed.
In general, regular manufacturers of brands have their own specialized designers to design the packaging, and production conditions to arrange for the production of factories to produce production, therefore, the packaging of the product from the line to the color block should be very clear, unambiguous.
Working principle of ball bearings
Ball bearings operate based on the principle of rolling contact, which is different from the sliding contact encountered in sliding bearings. The working principle involves the following concepts:
The external dimension is the determining factor for selecting rolling bearings (whether they are ball or roller type).By standardizing the design of installable roller and ball bearings, designers must determine the required size based on the required envelope size.
What is the difference between tapered roller bearings and ball bearings?
Like all roller bearings, tapered roller bearings have linear contact, while ball bearings have point contact. Line contact has higher load-bearing capacity, while ball bearings have higher speed capacity.
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