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Ceramic Balls

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Silicon nitride ceramic balls have high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance, can be used in seawater for very long time, and have good performance of electrical and magnetic insulation. At 800 ℃, the strength and hardness are

Zirconia Balls

Zirconia ceramic balls have high strength and toughness, good wear resistance, high temperature and corrosion resistance, high stiffness, non-magnetic conductivity, electrical insulation. At 600 ℃, the strength and hardness of the zirconia ceramic balls are almost unchanged, the density is 6.00g/cm3

Alumina Balls (≥99.7%)

Alumina ceramic balls are wear-resistant, heat-resistant, oxidation-resistant, water-resistant, corrosion-resistant from other chemicals and acids. Another feature is the ability to maintain dimensional stability up to 1100°C. Mainly used for pumps, valves, flow meters.

Silicon Carbide Balls

Silicon carbide ceramic balls not only have excellent mechanical properties at room temperature, such as high flexural strength, excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, but also with high temperature mechanical properties (strengt

Silicon Nitride Grinding Balls

Without mirror like surface, but also with high purity, this is a economical choice when you need the Si3N4' properties, but do not need the sizes to be so exactly

What are Ceramic Balls?

Ceramic balls are a specialized type of ball bearing made from ceramic materials. Ceramic balls have unique characteristics that make them superior to other types of balls for use in industrial applications. They offer excellent hardness, high strength and wear resistance, as well as low electrical conductivity and thermal conductivity. Unlike metal or plastic balls, ceramic balls are resistant to corrosion and can withstand harsh environments without deteriorating.

Features of Ceramic Balls

Compared to other types of balls, ceramic balls offer several features. They have a longer lifespan, lower friction, and better resistance to wear and corrosion. They are also lightweight and have a high strength-to-weight ratio, making them ideal for use in high-performance applications.

What are Ceramic Balls Used for?

Ceramic balls have a wide range of applications in various industries, such as aerospace, automotive, chemical, and medical. They are commonly used as grinding media, catalyst supports, ball bearings, and cutting tools. Ceramic balls are also used in high-temperature and high-pressure environments.

How to Choose Ceramic Balls

When choosing ceramic balls, it's important to consider factors such as material type, size, and grade. Material type will depend on the application, while size and grade will determine the ball's performance. Other factors to consider include surface finish, tolerance, and the presence of defects. For demanding applications that require higher densification, toughness, and compressive strength, HIP Silicon Nitride Balls are an excellent choice.

Why LILY Bearing?

LILY Bearing's ceramic balls offer many advantages for industrial applications that make them the ideal choice. Here are a few of the key benefits:

High precision: Thanks to advanced manufacturing techniques, LILY Bearing produces ceramic balls with excellent dimensional and geometrical accuracy which ensures greater accuracy during operation.
Wide selection: LILY Bearing provides a wide range of ceramic ball options across a variety of sizes. Material options include Silicon nitride (Si3N4), Zirconia (ZRO2), Alumina (Al2O3) and Silicon carbide (SIC) from 0.4mm to just over 115mm in diameter with the most common sizes in between. Precision grades provided are 5, 10, 16, 25 and 100.1.
Durability & reliability: Thanks to their high-quality construction, ceramic balls from LILY Bearings are highly durable and reliable. They will stand up to harsh environments without deteriorating or becoming damaged over time.
Cost savings: Due to their low weight, ceramic balls from LILY Bearings also offer cost savings as they require less energy for operation compared to other materials.

Properties of Ceramic Balls

Mechanical Properties	Units	AL₂O₃	SiC	HIP-Si₃N₄	GPS-Si₃N₄	ZrO₂
Density	g/cm³(lb/ft3)	3.89(242.8)	3.1(193.5)	3.29(205.4)	3.27(204)	6.04 (205.4)
Porosity	%(%)	0(0)	0(0)	0(0)	0(0)	0(0)
Color	—	ivory	black	black/grey	black	white
Flexural Strength	MPa (lb/in²x10³)	379(55)	550(80)	830(120.4)	689(100)	900(120.4)
Elastic Modulus	MPa (lb/in²x10³)	375(54.4)	410 (59.5)	310(45)	310(45)	200(45)
Shear Modulus	GPa (lb/in²x10⁶)	152(22)	—	—	—	—
Bulk Modulus	GPa (lb/in²x10⁶)	228(33)	—	—	—	—
Poisson’s Ratio	—	0.22	0.14	0.28	0.28	0.3
Compressive Strength	MPa	2200	3900	3900	3200	2000
Hardness	Kg/m²	1440	2800	1580	1450	1300
Fracture Toughness KIC	MPa•m^1/2	4	4.6	7	6-7	13
Maximum Use Temperature(no load)	°C(°F)	1750(3180)	1650 (3000)	1000(1830)	1000(1830)	750(1382)
Thermal Conductivity	W/m°K (BTU•in/ft²•hr•°F)	35(243)	120 (830)	30(208)	29(201)	2 (13.9)
Coefficient of Thermal Expansion	10^-6/°C (10^-6/°F)	8.4(4.7)	4.0(2.2)	3.3(1.8)	3.3(1.8)	10.3 (5.7)
Specific Heat	J/Kg•°K (Btu/lb•°F)	880(0.21)	750 (0.18)	—	—	—
Dielectric Strength	ac-kv/mm (volts/mil)	16.9(420)		—		—
Dielectric Constant	@ 1 MHz@ 1 MHz	9.8(9.8)		—		—
Volume Resistivity	ohm•cm	10¹⁴	10²-10⁶	—		10¹⁰