Features of Silicon Carbide Ball
- Exceptional hardness and long wear life
- High temperature resistance for extreme environments
- Strong resistance to corrosion and chemicals
- Stable dimensions with high precision
- Low friction for better efficiency
- Good oxidation resistance
What is the Main Use of Silicon Carbide Ball?
Silicon carbide balls are mainly used for grinding and bearing applications due to their high hardness, strength, and wear resistance. They are ideal for grinding electronic materials, pigments, and coatings, as well as serving as bearing balls in high-precision, corrosion-resistant industries like machinery, aerospace, chemicals, and petroleum.

Typical Silicon Carbide Ball
Silicon carbide balls are precisely manufactured from high-purity SiC featuring excellent wear resistance high temperature strength and dimensional stability.

Durable balls with wear resistance widely used in ceramics industry

Precision beads with low wear typically used in fine powder dispersion

Robust balls with chemical stability commonly used in refractory materials
Engineered balls with corrosion resistance commonly used in chemical equipment
Silicon Carbide Ball Applications Across Critical Industries
We provide silicon carbide balls that help you solve wear heat and corrosion challenges and more in various demanding environments.
- Automotive Engineering
Enhances bearing life in EV motors turbochargers and fuel systems
- Chemical and Energy Systems
Resists corrosion in chemical pumps hydrogen valves and metering units
- Semiconductors and Electronics
Used in CMP polishers vacuum bearings and non-magnetic positioning devices
- Medical Devices and Instruments
Applied in surgical drills dental turbines and artificial joints
- Industrial Grinding and Machinery
Ideal for ball mills vibratory mills and high-speed spindles
Why Choose Newthink Silicon Carbide Ball?
Choosing Newthink means choosing stable quality, for we deliver exactly what you need.

Using high-purity ultrafine silicon carbide powder and cold isostatic pressing, we ensure uniform density and precise spherical shaping for high-performance ceramic balls..

Lean manufacturing and efficient workflow help lower costs while ensuring high-performance quality.

Newthink facility is equipped with automated batching systems, vacuum sintering furnaces, and CNC grinding and polishing machines, ensuring consistent dimensions, smooth surfaces, and batch-to-batch reliability of every silicon carbide ball.

Our Silicon Carbide Balls are machined to exact specifications with minimal deviation, suitable for high-precision applications.

Equipped with micrometers, roundness testers, and CMMs, we ensure tight tolerances, consistent geometry, and smooth surfaces through strict quality control.

We conduct flexural and compressive strength tests to evaluate silicon carbide ball performance, with typical values reaching 400 MPa and 3000 MPa, respectively, ensuring compliance with ISO standards.
Production Capabilities and Precision of Silicon Carbide Ball
We offer silicon carbide ceramic balls in a wide range of sizes from 0.8 mm to 50 mm in diameter, with standard specifications readily available. Custom sizes beyond this range can be manufactured upon request. Tolerance grades strictly follow international standards, ranging from G3 to G2000. For high-precision applications, our silicon carbide balls can reach G5 or even G3, with a diameter variation of below 0.08 μm and a roundness deviation of under 0.08 μm. The hardness difference of the same batch of balls is less than or equal to 3HV. Silicon Carbide Ball is rigorously inspected and classified to ensure conformity with its designated grade.


Key Properties of Sintered Silicon Carbide Bearing Ball
Sintered silicon carbide Bearing Ball has outstanding mechanical performance, featuring a density above 3.1 g/cm³ and black appearance. It exhibits Vickers hardness greater than 24.5 GPa, an elastic modulus exceeding 430 GPa, and a Poisson’s ratio of 0.17. The compressive strength surpasses 2250 MPa, while its fracture toughness is above 3.8 MPa·m¹ᐟ². With a low thermal expansion coefficient of 4.09×10⁻⁶/°C (25°C–600°C) and porosity below 1%, SSiC is ideal for high-performance, high-precision applications.
Silicon Carbide Ball Production Workshop


Newthink has 14 years of experience in advanced ceramic production. Outfitted with cutting-edge ceramic processing tools and high-precision measuring systems, our production workshop ensures exact dimensional accuracy at every step. The clean, well-structured environment underscores our focus on delivering consistently stable, high-quality silicon carbide balls with meticulous precision.
Silicon Carbide Ball Manufacturing Process

- Silicon Carbide Powder: Select high-purity silicon carbide powder with appropriate particle size.
- Binder: Prepare resin or other suitable binders.

- Combine silicon carbide powder and binder in a mixer or kneader in defined proportions.
- Thoroughly mix until the binder uniformly coats the silicon carbide powder.

- Pressing Method: Place mixed materials into molds and apply pressure to form desired shapes (suitable for regular shapes and high precision).
- Rolling Method: Place mixed materials into a rotating drum or disc to form spherical shapes by rolling friction (ideal for small to medium-sized silicon carbide balls).

- Place formed silicon carbide balls into drying equipment.
- Dry at temperatures ranging from 100°C to 300°C to remove moisture and volatile components.

- Transfer dried silicon carbide balls into a high-temperature furnace.
- Conduct sintering at temperatures between 1600°C to 2200°C under inert or reducing gas protection.

- Cool silicon carbide balls to room temperature using either furnace cooling or rapid cooling methods.
- Carefully control cooling rates to ensure product quality.

- Examine the appearance, dimensions, density, hardness, and compressive strength of the silicon carbide balls.

- Pack the inspected and qualified silicon carbide balls using plastic film, woven bags, or drums for safe transportation and storage.
Silicon Carbide Ball Parameters and Classification
- Available Machining Sizes
- Precision Grades and Tolerances
- Typical Applications by Ball Grade
Size(mm) | Size(in) | Size(mm) | Size(in) |
0.8 | 12.7 | 1/2 | |
1 | 13 | ||
1.2 | 13.494 | 17/32 | |
1.3 | 14 | ||
1.340 | 14.288 | 9/16 | |
1.5 | 15 | ||
1.588 | 1/16 | 15.081 | 19/32 |
1.984 | 5/64 | 15.875 | 5/8 |
2 | 16 | ||
2.381 | 3/32 | 16.669 | 21/32 |
2.400 | 17 | ||
2.5 | 17.462 | 11/16 | |
2.778 | 7/64 | 18 | |
3 | 18.256 | 23/32 | |
3.175 | 1/8 | 19 | |
3.5 | 19.05 | 3/4 | |
3.572 | 9/64 | 19.844 | 25/32 |
3.800 | 20 | ||
3.969 | 5/32 | 20.5 | |
4 | 20.638 | 13/16 | |
4.025 | 21 | ||
4.5 | 22 | ||
4.762 | 3/16 | 22.225 | 7/8 |
5 | 23 | ||
5.5 | 23.018 | 29/32 | |
5.556 | 7/32 | 23.812 | 15/16 |
5.953 | 15/64 | 24 | |
6 | 25 | ||
6.350 | 1/4 | 25.4 | 1 |
6.5 | 26 | ||
6.747 | 17/64 | 26.988 | 11/16 |
7 | 27 | ||
7.144 | 9/32 | 28 | |
7.5 | 28.575 | 11/8 | |
7.938 | 5/16 | 29 | |
8 | 30 | ||
8.5 | 30.162 | 13/16 | |
8.731 | 11/32 | 31.75 | 11/4 |
9 | 32 | ||
9.128 | 23/64 | 33.338 | 15/16 |
9.5 | 34.925 | 13/8 | |
9.525 | 3/8 | 36.512 | 17/16 |
10 | 38.1 | 11/2 | |
10.319 | 13/31 | 40 | |
11 | 41.275 | 15/8 | |
11.113 | 7/16 | 42.0 | |
11.5 | 42.862 | 11/16 | |
11.509 | 29/64 | 44.45 | 13/4 |
11.906 | 15/32 | 47.625 | 17/8 |
12 | 48.419 | ||
12.303 | 31/64 | 50.8 | 2 |
Ball Grade | Ball Diameter Variation | Sphericity Error | Surface Roughness | Lot Diameter Variation |
G3 | 0.08 | 0.08 | 0.01 | 0.13 |
G5 | 0.13 | 0.13 | 0.014 | 0.25 |
G10 | 0.25 | 0.25 | 0.02 | 0.5 |
G16 | 0.4 | 0.4 | 0.025 | 0.8 |
G20 | 0.5 | 0.5 | 0.032 | 1 |
G24 | 0.6 | 0.6 | 0.04 | 1.2 |
G28 | 0.7 | 0.7 | 0.05 | 1.4 |
G40 | 1 | 1 | 0.06 | 2 |
G60 | 1.5 | 1.5 | 0.08 | 3 |
G100 | 2.5 | 2.5 | 0.1 | 5 |
Grade | Application |
G5, G10 | High-precision bearings, measuring tools |
G25 | Precision bearings |
G100 | Bearings, drawers |
G200 | Soap dispensers, body jewelry |
G500 | Automotive seat rails, bicycles |
G1000 | Casters, non-conductive bearings |
G2000 | Mixers, decorative use, weights, ballast |
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Silicon carbide balls are high-performance spherical components made from an advanced ceramic material that is widely recognized for its extreme hardness, superior high-temperature resistance, and exceptional durability. Naturally black in appearance and approximately 50% lighter than steel, silicon carbide balls combine wear resistance, corrosion resistance, and low friction, making them an indispensable material in demanding industrial applications.
These ceramic balls are widely used in:
Precision bearings within the aerospace, semiconductor, and automotive industries.
Industrial grinding media for efficient grinding processes.
Chemical and petrochemical environments where there are corrosive fluids.
SiC balls are manufactured by using powder metallurgy techniques, including pressure sintering or vacuum sintering. They have an ultra-dense and sturdy structure. This allows them to maintain long-term performance even under extreme mechanical and thermal stresses. Whether used in high-speed machinery or corrosive chemical devices, silicon carbide balls provide precision, reliability, and exceptional service life that surpass traditional metal alternatives.
Silicon Carbide Ball should be stored in a dry indoor environment with intact packaging to prevent moisture and contamination. Avoid direct sunlight and place cartons or bulk bags on pallets off the ground. Steel drums should be protected from water accumulation and corrosion. For long-term storage, cover with dustproof fabric and periodically check packaging integrity. If stored for extended periods, clean with anhydrous alcohol before use and handle with gloves to maintain surface cleanliness.
Compared to steel and alumina balls, silicon carbide balls provide a better combination of mechanical and thermal performance. Silicon carbide balls have a Vickers hardness of over 24.5 GPa, while steel has about 8 GPa, and alumina has around 14.5 GPa. So, silicon carbide balls are much more wear-resistant. Their compressive strength exceeds 2250 MPa, and their elastic modulus is over 430 GPa. This enables them to maintain their shape under extreme loads. SiC also has a lower thermal expansion (4.09 × 10⁻⁶/°C) than alumina (6.8 × 10⁻⁶/°C) and steel (12 × 10⁻⁶/°C). This reduces thermal deformation in precision environments. Additionally, Silicon carbide balls are chemically inert and much lighter than steel (density >3.1 g/cm³ vs ~7.8). This makes them ideal for high-speed bearings, semiconductor manufacturing, chemical valves, and aerospace systems, where corrosion resistance, thermal stability, and low mass are crucial.
Ceramic balls are widely used across multiple industries, thanks to their exceptional material characteristics that outperform traditional options like steel. Their unique advantages make them ideal for specific high-demand applications:
Bearings (Hybrid and Full Ceramic)
One of the most prevalent uses of ceramic balls.
Advantages: They offer reduced friction and support higher rotational speeds, thanks to their lower density and resultant lower centrifugal force. Additional benefits include enhanced stiffness, electrical insulation to prevent arcing, superior corrosion resistance, longer service life under extreme conditions, and high-temperature tolerance.
Uses: Common in high-speed spindles, aerospace systems, electric motors, pumps for corrosive media, vacuum setups, medical devices, and even performance cycling.
Grinding and Milling Media
Utilized inside industrial mills for grinding or dispersing materials.
Advantages: Their high hardness and density allow for effective grinding, while excellent wear resistance minimizes product contamination and prolongs media lifespan. Their chemical inertness ensures stable performance across a variety of materials.
Uses: Used in grinding pigments, ceramics, minerals, chemicals, pharmaceuticals, and food. Alumina and zirconia balls are typical materials of choice.
Valves (Check Valves, Ball Valves)
Serve as sealing elements in valve assemblies.
Advantages: Resist aggressive chemicals, maintain wear resistance under abrasive flow, and remain operational at elevated temperatures.
Uses: Critical in chemical processing, oil and gas, food and beverage industries, water treatment systems, and medical devices requiring durability and inert materials.
Measurement and Probing
Serve as precision tips in metrology tools.
Advantages: Their extreme hardness resists wear during contact, while high stiffness preserves accuracy. A polished surface, low thermal expansion, and light weight reduce dynamic errors.
Uses: Found in Coordinate Measuring Machines (CMMs), roundness testers, and other precision instruments. Materials like ruby and silicon nitride are common.
Flow Control and Dispensing
Act as check mechanisms in pumps and dispensing tools.
Advantages: Provide reliable chemical resistance and wear protection, offering accurate sealing to prevent backflow.
Uses: Integrated into lotion pumps, spray dispensers, and medical dosing systems.