Bearings
Products Description
Silicon Nitride Ceramic Ball is the most ideal bearing ball for bearing applications, due to the excellent properties of silicon nitride ceramics, it has many irreplaceable advantages comparing to traditional steel materials, such as: high mechanical strength, low wear loss, good self-lubrication, low density, high corrosion resistance, good electrical insulation etc. Therefore, Silicon Nitride Balls are mostly used for some harsh working conditions: high speed/super speed bearings, high precision bearings, bearings in vacuum, high/low temperature bearings. Moreover, Silicon Nitride Ceramic Balls can also used as valve ball or measurement balls in chemical pumps/high temperature pumps/metdering pumps.
Performance Index Of Si3N4 Ceramics
Type
Condition
Performance
Main Components
Normal Temperature
Si3N495%
Bulk Density
g/cm3
Normal Temperature
3.22
Elastic Modulus
Gpa
Normal Temperature
350
Hardness
HV
Normal Temperature
1870
Bending Strength
Mpa
Normal Temperature
780
Fracture Toughness MPa.m1/2
Normal Temperature
7.2
Thermal Expansion Coefficient
10-6/K
20-1000
3.2
Thermal Conductivity
W/(.K)
20-1000
25
Standard Sizes List
Inch
Size
MM
Size
Inch
Size
MM
Size
Inch
Size
MM
Size
Inch
Size
MM
Size
1/16
1.588
5/16
7.938
9/16
14.288
15/16
23.812
3/32
2.381
11/32
8.731
19/32
15.081
1 25.4
1/8
3.175
3/8
9.525
5/8
15.875
17/16
26.988
5/32
3.969
13/32
10.318
21/32
16.668
9/8
28.575
3/16
4.762
7/16
11.1125
11/16
17.462
19/16
30.162
7/32
5.556
29/64
11.509
23/32
18.256
5/4
31.75
15/64
5.593
15/32
11.906
3/4
19.05
21/16
3