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Silicon Nitride (Si3N4) Ceramic Balls

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MOQ : 100 Pieces

Silicon Nitride (Si3N4) Ceramic Balls Specification

Precision Rating
ABEC-1 to ABEC-9

Lubrication Type
Grease/Oil/Dry

Cage Material
Polyamide/Nylon/PEEK/Metal

Retainer
Available

Thickness
Customized (Standard sizes available)

Inside Diameter
Customized (Standard sizes available)

Bearing Type
Ball Bearing

Material
Silicon Nitride (Si3N4)

Structure
Solid Ball

Seals Type
Open / Sealed

Number Of Rows
Single

Bore Size
Customized (Standard sizes available)

Outside Diameter
Customized (Standard sizes available)

Limiting Speed
Up to 120,000 rpm

Load Capacity
High

Operating Temperature Range
-100°C to +800°C

Water Absorption
Zero

Applications
Bearings, Mechanical Components, Aerospace, Automotive, Medical Instruments

Thermal Expansion Coefficient
3.2 x 10^-6 /K

Corrosion Resistance
Excellent

Color
Dark Gray/Black

Modulus of Elasticity
320 GPa

Electrical Insulation
High

Hardness (Vickers)
HV 1700

Surface Finish
0.02-0.05 µm Ra

Density
3.2 g/cm³

Silicon Nitride (Si3N4) Ceramic Balls Trade Information

Minimum Order Quantity
100 Pieces

Supply Ability
Piece

Delivery Time
Days

Certifications
Yes

About Silicon Nitride (Si3N4) Ceramic Balls

Silicon Nitride (Si3N4) Ceramic Balls are formed from a new material suitable for applications where high loads, high speeds and extreme temperatures are factors. Long life and the need for minimal lubrication make this material appropriate for extreme applications. Silicon Nitride is non-porous, non-magnetic, non corrosive, lighter than steel and, in ball form, is harder than steel. Because ceramic balls are non-porous they are virtually frictionless and are capable of spinning faster than steel balls..

Advanced Material Properties

Si3N4 ceramic balls possess a high modulus of elasticity (320 GPa), low thermal expansion coefficient (3.2 x 10^-6 /K), and zero water absorption. These features contribute to their durability and performance, even in extreme temperatures or corrosive environments, ensuring longevity in high-speed and high-load applications.

Versatile Engineering Applications

Used extensively in bearings, mechanical components, aerospace assemblies, automotive systems, and medical instruments, Silicon Nitride balls offer unmatched wear resistance and operational efficiency. Their dark gray/black coloration and solid structure signify premium engineering standards, suitable for both standard and custom requirements.

Precision and Customization

Available in single row ball bearing types, these ceramic balls offer customized bore and outside diameters, thickness adjustments, and a range of precision ratings (ABEC-1 to ABEC-9). Choices for cage materials and lubrication types empower clients to specify products suited to unique operational demands.

FAQs of Silicon Nitride (Si3N4) Ceramic Balls:

Q: How are Silicon Nitride (Si3N4) ceramic balls typically used in industrial applications?

A: Silicon Nitride ceramic balls see widespread use in high-speed bearings, mechanical components, aerospace assemblies, automotive systems, and medical instruments due to their exceptional hardness, low friction, and corrosion resistance. Their reliability at extreme temperatures and high loads ensures durability in these demanding environments.

Q: What benefits do Si3N4 ceramic balls offer compared to metal or other ceramic alternatives?

A: Compared to metals and other ceramics, Si3N4 balls provide superior hardness (HV 1700), excellent corrosion resistance, high electrical insulation, zero water absorption, and reduced weight. Their ability to operate between -100C and +800C enhances their suitability for high-performance and safety-critical environments.

Q: When should an engineer choose Silicon Nitride balls for a bearing application?

A: Engineers should opt for Silicon Nitride balls when applications demand high speed (up to 120,000 rpm), elevated precision (ABEC-1 to ABEC-9), resistance to chemicals and moisture, and operational stability in extreme temperature conditions. These factors make them ideal for aerospace, medical, and automotive bearings.

Q: Where are customized sizes for these ceramic balls available?

A: Customized bore sizes, outside diameters, and thickness options for Silicon Nitride ceramic balls are available through distributors, exporters, importers, suppliers, and traders in India. Standard sizes also exist for various bearing and engineering requirements.

Q: What is the process for selecting cage and lubrication types for these balls?

A: Selection depends on the intended application: cage materials such as polyamide, nylon, PEEK, or metal cater to particular mechanical and thermal demands, while lubrication options (grease, oil, or dry) are chosen based on environmental exposure, operational speed, and required maintenance levels.

Q: How does the high modulus of elasticity benefit the use of Si3N4 ceramic balls?

A: A high modulus of elasticity (320 GPa) endows these ceramic balls with excellent stiffness, minimizing deformation under load and ensuring consistent bearing performance, even at high speeds or under significant mechanical stress.

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