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What is Grinding Media and How to Buy Steel Balls

What is Grinding Media?

Grinding media are commonly used for the extraction of precious metals, when processing ore minerals. Grinding media are of two types-steel balls and grinding rods. The size of grinding steel balls can be a diameter between 20mm and 150mm, or 1 inch to 6 inch. The size of grinding rods can come in diameter between 40mm and 120mm. Forged steel grinding balls do not lose shape or crack easily. They are durable and have great resistance. At Camasteel, we sell forged steel grinding balls and cast iron grinding balls, in addition to steel grinding rods. 

Steel Grinding Balls at Camasteel

Quality Steel Grinding Media Balls

What is Grinding Media Used For?

Grinding Media are used in the mining and construction industries to crush or grind materials in a mill. In the mining industry, grinding media are used to extract precious metals in minerals. Also, grinding balls are used in ball mills. They are useful when breaking down and grinding materials such as rocks, cement, and others.

Some markets that use grinding media include:

  • Mineral processing
  • Construction sector
  • Road construction
  • Ore crushing
  • Manufacturing process


How Do I Choose a Grinding Media?

The choice of grinding media should be based on the following recommended characteristics , which include, the shape, size, and composition. Grinding media  characteristics are explained below;

Grinding Media - Shape

The shape of a grinding media ball is typically a sphere. This form is highly dense and does not chip easily. There are two shapes of grinding media that are most efficient. These include the ball shape and the cylinder rod.

steel grinding ball in process

Spherical Shaped Grinding Media Ball

Grinding Media- Diameter

The grinding media ball should have a smaller diameter, but still large enough to get the best results. It can be more accurate when breaking down other material. The size of forged steel grinding balls will generally range from ¾ inch to 5 inches in diameter. The size of grinding rods will generally be between 1.5 to 4 inch in diameter. Also, the length should be a few inches shorter than the mill length. The size needed for each job may vary.

steel grinding rod

High Quality Grinding Rods for Bulk Purchase

Grinding Media- Composition 

The grinding media needs to be able to withhold high grinding methods and not wear or chip quickly. The grinding media should have a greater density than the material that is being ground. The material of the grinding media may vary, as well. Camasteel sells forged steel grinding balls, cast iron grinding ball, and steel grinding rods.


How to Manufacture Steel Balls?

In the manufacturing of grinding steel balls, Camasteel uses a forging and stamping method to heat the metal to 1050 degrees Celsius. Then, it can be moulded into the sphere shape. Between the forged steel grinding ball and the cast iron grinding ball, forged steel has better mechanical performance. The forged steel grinding ball must use the super wear resistant material to ensure its durability.

steel ball manufactured form ball shape

Making of Quality Grinding Steel Balls

Process in Manufacturing Grinding Steel Balls

  1. Heading

    Short lengths of wire are cut and then it is shaped into the form of a sphere.
  2. Deflashing

    This step involves rolling the balls between two very heavy plates, typically cast iron plates, which leads to its formation.
  3.  Soft grinding

    This is similar to the deflashing step, but a grinding stone is used to make the more precise form.
  4. Hot treating

    The steel balls are put through heat and hardened.
  5. Descaling

    This is the process of removing any undesired residue from the ball.
  6. Hard grinding

    This step helps with providing the perfect size and shape for the order.
  7. Finishing

    This step involves giving the balls a smooth finish and coating to ensure that the product will last long.


Which Countries Manufacture Steel Balls in Bulk?

The main producers of steel ball grinding media are

  • China
  • Japan
  • Belgium
  • India
  • Germany
  • United States
  • United Kingdom

The use and demand for grinding media has increased, especially in developing countries. These countries have been able to create the capacity and expand their productions to produce larger quantities of steel, especially China.

steel balls in bulk at Camasteel

Quality Grinding Steel Balls Ready for Export

How to Transport Steel Balls?

Before the product is ready to sell, there is a quality inspection test that occurs. This consists of:

  • Dropping test
  • Hardness test
  • Chemical Element Analysis
  • Impact Value Test


These tests ensure that the steel ball will be efficient in the mills. The product is cleared for shipping, then it is packed in bags and loaded on a truck to be transported to its destination.

Camasteel steel ball loading

Bulk Purchase of Quality Grinding Steel Balls

Where to Buy Grinding Media?

You may be able to find grinding media in small quantities in your area. But if you want to buy large quantities of grinding media, it is preferable to import directly from the manufacturers. They can issue certifications and provide cost savings which is better than buying the steel in small quantities locally or from a distributor.

If you require bulk quantities of this steel, you can buy Grinding Media on our website.

buy grinding media at Camasteel

Quality Steel Balls for Bulk Purchase

Here at Camasteel we have Grinding Media for sale. We export worldwide, so you can contact us for a FREE quotation today via email [email protected] or send a message on WhatsApp for a fast response +86-131-2037-9271.

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