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Si3N4 Ceramic Ball

Si3N4 Ceramic Ball

ZYS can not only provide high quality bearing products, but also provide ceramic balls . Ceramic balls are ZYS famous products and very popular in the industry field. ZYS has integrated 60 years of research and design in the manufacturing of ceramic balls.

Description

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Si3N4 ceramic ball Performance


ZYS silicon nitride ceramic (Si3N4) is a new kind of bearing material, which has many good features. Si3N4 possesses high temperature resistance, corrosion resistance, insulation, non-magnetism, high strength, low density. In the application of bearing, Si3N4 possesses low friction, low temperature rise, high rigidity, low centrifugal force and other features. It can implement high speed, high precision, high temperature, high rigidity, corrosion resistance and other good features. 

ZYS ceramic ball with high precision and high performance  is manufactured by spray-drying process, near-net-shape, cold isotatic pressing, GPS-HIP combined sintering, compounded abrasive lapping process effectively. The precision grade of Si3N4 ceramic ball is G5 and the materials class of Si3N4 ceramic ball is I.


Technical parameter of Si3N4 ceramic ball material


Class

Materials class

Item

I

II

III

Property

Bending strengthσ3.40(Mpa)

900

800

600

Crushing load ratio(%)

35

35

30

Hardness(HV10)

1580

1480

1380

Fracture toughness(Mpa.m1/2)

6.0

5.0

5.0

The limit does of fiber structure

Pore size(μm)

10

10

25

Porosity(%)

0.02

0.06

0.06

Crystal phase(μm)

10

10

25

The second ceramic phase(μm)

25

25

25

The maximum of inclusion of transverse section every Square centimeter

Range 200(μm)

0

0

1

Range 100~200(μm)

0

1

2

Range 50~100(μm)

1

2

4

Range 20~50(μm)

4

8

16


Si3N4 ceramic ball’s common applications


G3

G5

G10 G16

G20 G28 G40

Class I

High speed power equipment Space mechanism Aircraft   instrument

Liquid oxygen pump Active shaft bearing

The key parts of aerospace equipment

Testing bearing ball, separating bearing ball

Class II

Molecular turbo-pump High precision star bearing

Vacuum equipment, high speed instrument, mechanical   devices, high performance and the most advanced contacting spherical   propeller

Motor, medium-low precision star bearing

Class III

Sport, entertainment, food processing

Mechanical devices


Si3N4 ceramic ball specifications

The nominal diameter of bearing ball

The nominal diameter of bearing ball

The nominal diameter of bearing ball

mm

in

mm

in

mm

in

0.794

1/32

5


8.731

11/32

0.8


5.5

9.525

3/8

1

5.556

7/32

11.112

7/16

1.588

1/16

5.953

15/64

12.303

31/64

2


6


12.7

1/2

2.381

3/32

6.35

1/4

13.494

17/32

2.5


6.5


14.288

9/16

3

6.747

17/64

15.081

19/32

3.969

5/32

7


15.875

5/8

4


7.144

9/32

19.05

3/4

4.5

7.5


25.4

1

4.762

3/16

7.938

5/16

31.75

1 1/4

Luoyang Bearing has been engaged in si3n4 ceramic ball since 1958, and we are known as one of the leading bearing manufacturers and suppliers for our quality products and excellent services. Please rest assured to buy the good products from our factory.

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