Zirconium Oxide ball ZrO2 ball for bearing ball

Specifications

Zirconium Oxide ball ZrO2 ball for bearing ball
Density>6.05
Wear resistance
High hardness

Specifications

1. High temperature resistant. Use temperatures up to 2400 ℃

2. High density

3. Low thermal conductivity

4. Chemical inertness

5. Resistance to molten metals

6. Lonic electical conduction

7. Wear resistance

8. High fracture toughness

9. High hardness

 

   Zirconium Oxide ball ZrO2 ball for bearing ball   

Features of Ceramic Ball:

1. 59% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration.

2. 44% larger elastic modulus, which means less deformation under load.

3. Harder with rockwell hardness as 78.

4. Smaller friction coefficient.

5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature.

6. Superior surface finish can be achieved.

7. Can endure high temperature with high hardness and strength up to 1050 ℃.

8. Nevr rust, and can roll without lubrication.

9. More corrosion resistant than steel.

10. Free of metal contamination.

11. Non-magnetic.

12. Electric isolation.

 

Table of material performance

Properties	Unit	AISI 52100	AISI 440C	ZrO2	Si3N4
Density	G/cm³	7.85	7.9	6.0	3.3
Thermal expansion coefficient	10-6/k	11	17	9.6	3.2
Elasticity modulus	GPa	208	200	210	320
Poisson's ratio		0.3	0.3	0.3	0.26
Hardness		800	700	1250	1500
Fracture strength	Mpa	2400	2600	1000	900
Bending toughness	Mpam1/2	20	25	10	7
Working temperature	℃	120	150	800	1000
Corrosion resistance		none	little	power	power
Magnetism		have	have	none	none
Size stability		no good	no good	good	good
Conductivity		conductor	conductor	insulator	insulator

 

Application of Zirconia ball

ZrO2 ball is mainly used for valve ball, full ceramic bearing, metering ball, track ball and precision grinding ball. It can be used in fields requiring chemical resistance, high temperature, electronic insulation, magnetic insulation, non-lubrication. ZrO2 ball is an idea substitute for steel ball in chemical corrosion application. As valve ball, ZrO2 ball is now successfully used in high pressure homogenizer, diaphragm pump, metering pump, oil well pump, high pressure sprayer etc.

 

Quality control