Natural Agate Grinding Balls

The S4R Natural Agate Grinding Balls are designed for laboratory grinding, milling, mixing and homogenization of solid samples.

Manufactured from natural agate, these grinding balls combine high hardness, good wear resistance and a smooth polished surface. They are suitable for use with agate grinding jars and other compatible laboratory milling containers.

A wide range of nominal diameters is available to accommodate different jar capacities, sample quantities and grinding requirements. The balls can be supplied in small sets, by weight or in selected assortments suitable for standard agate grinding jar capacities.

Due to the manufacturing process and the natural characteristics of agate, the actual ball diameter may vary slightly from the stated nominal diameter. The applicable dimensional tolerance depends on the selected ball size: larger grinding balls may present a variation of up to approximately ±1 mm, while smaller diameters are generally manufactured with tighter tolerances. Users requiring a specific diameter range or controlled dimensional tolerance should contact S4R before ordering.

Smaller grinding balls generally provide a greater number of contact points and are suitable for finer grinding operations, while larger balls provide greater impact energy. The appropriate diameter, quantity and combination of grinding balls depend on the jar capacity, sample characteristics, initial particle size and required grinding result.

As agate is a natural material, slight variations in color, pattern, banding, translucency and surface appearance may occur between individual balls. These natural variations do not affect their intended laboratory use.

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Agate Grinding Ball Diameter (Pack 20 Balls)

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Product Specifications
Product Name	Natural Agate Grinding Balls
Material	Natural Agate
Standard Diameter Range	Ø3 to Ø25 mm
Surface Finish	Smooth and Polished
Appearance	Natural Grey, Grey-White, Brown and Translucent Agate Tones
Intended Equipment	Laboratory Ball Mills and Compatible Grinding Jars
Main Properties	High Hardness, Wear Resistance and Impact Resistance
Chemical Resistance	Resistant to Acids and Alkalis
Standard Packaging	Pack of 20 Balls
Dimensional Tolerance	Depends on the Selected Diameter; Larger Balls May Vary by up to Approximately ±1 mm
Custom Sizes	Available Upon Request
Custom Configurations	Available According to Jar Capacity and User Requirements

Recommended Ball Configuration by Jar Capacity
50 mL	Ø6 / Ø8 / Ø10 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
100 mL	Ø6 / Ø8 / Ø10 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
250 mL	Ø6 / Ø8 / Ø10 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
500 mL	Ø6 / Ø10 / Ø15 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
1000 mL	Ø10 / Ø15 / Ø20 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume

Recommended Ball Configuration by Jar Capacity
Agate Jar Capacity	Recommended Ball Diameters	Suggested Distribution	Recommended Total Ball Loading
50 mL	Ø6 / Ø8 / Ø10 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
100 mL	Ø6 / Ø8 / Ø10 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
250 mL	Ø6 / Ø8 / Ø10 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
500 mL	Ø6 / Ø10 / Ø15 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume
1000 mL	Ø10 / Ø15 / Ø20 mm	50% / 30% / 20%	Approximately One-Third of the Jar Volume

Key Features

Selected natural agate material
Smooth polished surface
High hardness
Good wear resistance
Good impact resistance
Resistant to acids and alkalis
Suitable for laboratory grinding and milling
Multiple diameters available
Mixed-diameter configurations possible
Standard pack of 20 balls
Custom sizes and quantities available

Typical Applications

Laboratory sample preparation
Grinding and homogenization of powders
Mineral and geological samples
Precious-metal materials
Electronic ceramic materials
Magnetic materials
Chemical laboratory applications
Medical and research applications
Fine powder preparation

Natural Agate Grinding Balls

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Pricing available to approved customers

Key Features

Typical Applications

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