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Zirconia Grinding Balls

Zirconia Grinding Balls

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The S4R Zirconia Grinding Balls are designed for laboratory grinding, milling, mixing and homogenization of solid samples in compatible ball milling equipment.

Manufactured from zirconia ceramic, these grinding balls provide a dense and durable milling medium suitable for repeated laboratory use. Their ceramic construction limits direct contact between the processed sample and metallic grinding media.

The smooth spherical geometry supports regular movement inside the grinding jar and facilitates efficient interaction between the grinding media and the sample during milling operations.

A wide selection of nominal diameters is available to accommodate different jar capacities, sample quantities and grinding requirements. Smaller diameters are generally suited to finer grinding and homogenization, while larger diameters provide greater impact energy.

Each diameter is supplied separately in a choice of 500 g or 1 kg packaging. Grinding jar and balls must be selected according to the dimensions and operating requirements of the milling equipment.

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Key Features
✓ 93% ZrO₂ and 5% Y₂O₃ composition
✓ Specific gravity of 6.0 g/cm³
✓ Vickers hardness of 1250 HV1
✓ Polished spherical surface
✓ Sphericity above 95%
✓ High wear resistance and toughness
Typical Applications
✓ High-energy ball milling
✓ Laboratory sample preparation
✓ Battery and electrode materials
✓ Ceramic and electronic powders
✓ Pigments and coating materials
✓ Powder mixing and homogenization
Specifications
Product Name 95% Zirconia Grinding Balls
Product Type Ceramic grinding media
Material Yttria-stabilized zirconia ceramic
Chemical Composition ZrO₂ 93% / Y₂O₃ 5% / Other constituents 2%
Tetragonal Phase 95%
Specific Gravity 6.0 g/cm³
Bulk Density 3.7 g/cm³
Vickers Hardness 1250 HV1
Porosity 0%
Sphericity Above 95%
Surface Finish Polished
Magnetic Properties Non-magnetic
Electrical Properties Electrically insulating
Available Diameters 0.5, 1, 3, 5, 8, 10, 12, 15, 20 and 25 mm
Standard Packaging 500 g or 1 kg per selected diameter
Intended Equipment Compatible laboratory ball mills
Available Diameters, Tolerances and Packaging
Nominal Diameter Supplier Tolerance Range 500 g Pack 1 kg Pack
0.5 mm ±0.3 mm Available Available
1 mm ±0.3 mm Available Available
3 mm ±0.5 mm Available Available
5 mm ±0.5 mm Available Available
8 mm ±0.5 mm Available Available
10 mm ±0.5 mm Available Available
12 mm ±1.5 mm Available Available
15 mm ±1.5 mm Available Available
20 mm ±1.5 mm Available Available
25 mm ±1.5 mm Available Available
Size notice: Diameters and tolerances are nominal supplier reference values. Select the grinding ball diameter and total media quantity according to the jar capacity, sample properties and milling conditions.

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