Zhejiang Waxing Electromechanical Co., Ltd is one of the most professional manufacturers and suppliers of gcr15 steel ball weight calculation formula in China. Welcome to buy high quality customized bearings made in China here from our factory. For price consultation, contact us.
1. No.: 30mm steel ball, 2. Size：30MM. Weight:0.11kg,
Lead time:5-7 business day, 3. Type:steel ball Quality:High Precision Quality
The finest quality chrome steel produced in accordance with the highest industry standards
These high precision Gcr15 ball bearings are hot forged from superior steel
Modern furnaces with precisely controlled atmospheres and temperatures are used for heat treating to assure uniform hardness
and proper microstructure for each stainless steel ball
Throughout the manufacturing process statistical process control assures tolerance accuracy, fine surface finish and consistent
high quality
We can also provide stainless steel balls, ceramic balls
Applications：Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters,
drawer slides, door locks and many other applications.
What are the grades of steel balls? Which grade of steel ball is best?
The grade of the steel ball is a combination of the tolerance range, roundness and roughness of the steel ball, a parameter for comprehensive evaluation and evaluation of the steel ball. Steel balls are generally divided into G10, G16, G20, G24...G100, G500, G1000, etc. For example, the grade of a steel ball is G10, which means that the diameter variation of the steel ball is 0.25μm or less, the roundness is 0.25μm, the roughness is 0.25μm, and the tolerance range is +/-9μm. It can be seen that a steel ball reaches the G10 grade, which proves that all parameters of the steel ball are in line with the scope covered by G10.
So which level of steel ball is the best? According to the current situation of the development of the modern steel ball industry, precision steel ball factories generally produce more G10 steel balls. According to national standards, G3 steel balls are the highest grade steel balls. However, in the actual production situation, there is currently no manufacturer that can produce steel balls of this level for real G3 steel balls. In actual production, G5 grade steel balls in the strict sense are currently produced by only a few steel ball factories, and Qianrun Precision Steel Ball Factory is currently one of the domestic companies that can produce G5 grade steel balls in the strict sense. Regardless of the accuracy, roundness, roughness and tolerance range of the steel balls, they are strictly implemented in accordance with the national standards for steel balls and meet the standards.
Steel ball weight calculation formula 4/3πr3 (r is the radius of the ball) The weight calculation method of each steel ball: spherical volume × steel specific gravity The spherical volume calculation formula: 4/3πr3 (r is the radius of the ball).
In fact, it is the packing density of steel balls. Steel balls occupy a certain volume of space when they are stacked. However, because steel balls cannot be completely fitted together like a cube, there is a certain gap. Usually, the volume occupied by balls and the volume occupied by balls Bulk density is calculated as a ratio of the total space volume.
The accumulation is divided into regular accumulation (face-centered accumulation, spheres of the same size occupy a maximum of 74% of the total space) and random accumulation (random accumulation, spheres of the same size occupy a maximum of 64% of the total space).
Regular packing density = steel density * 74%, random packing density = steel density * 64%, according to the meaning of the title, it should be random packing, if the density of steel is 7.85g/cm, then the packing density of steel balls is: 7.85 g/cm*64%=5.02g/cm.
Related Information:
The influence of material density: steel balls, cast iron balls, alloy steel balls, etc., the density of different materials is different, the density of steel is higher than that of cast iron, and the density of alloy steel is different according to the density and content of the main alloying elements.
The impact of the manufacturing method of steel balls: the rolled and forged steel balls have a dense structure, so the density is high, and the cast steel balls, cast iron balls or cast alloy balls are not very dense, and even have pores in them, so the density is lower .
Influence of metallographic structure of steel balls: different crystal structures such as martensite, austenite, bainite and ferrite have different densities, which also affect the crystal fineness.
Effect of chemical composition elements: Due to the different chemical compositions contained in the finished steel balls, such as iron, carbon, chromium, manganese, sulfur, phosphorus, etc., the hardness and impact wear of the steel balls are affected to varying degrees. Generally speaking, the steel balls containing The larger the amount of chromium, the higher the wear resistance of the steel ball.
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