Silicon Nitride (Si3N4) Ceramic Balls
Sintered from the high-quality Submicron Powder with advanced sintering technologies(PLS,GPS,HIP,etc.),GAFS’ Ceramic Balls have many advantages compared with metal balls:
1. Much longer life,even without lubrication;
2. Lighter Weight and Lower Inertia benefited from Lower density(less about 58.5% than Chrome Steel Balls);
3. Much Higher Load;
4. Extremely higher rotation rate;
5. Bearing higher operating temperatures over 800ºC,sometimes up to 1000 ºC;
6. Much better wear resistance:Hardness higher 87.5% than Chrome Steel Balls;
7. Higher Bending Strength;
8. Higher Compression Strength;
9. Very good corrosion resistant property:Si3N4 balls can be applied in many environments like:water, moisture,dust, water vapor, sea water,various acids, alkalis,salts,etc.
10. Higher Stiffness:Higher module of elasticity makes Silicon Nitride balls stiffer;
11. Much Lower Heat Build-up due to Lower Coefficient of Thermal Expansion,Lower Thermal Conductivity,and Lower Operating Temperature Increase;
12. Less Rotating Noise caused by Lower Friction Coefficient;
13. Non-magnetism,thus Silicon Nitride Balls are widely used in precision instruments/meters;
14. Electrical Insulation;
15. More environmentally friendly than metal balls;Above all,
16. Si3N4 balls have the same Form of Fatigue Failure-Peeling Failure,which makes them the First choice among all the ceramic balls.
Featuring those many excellent performances,GAFS’s High Precision Silicon Nitride/Si3N4 Balls are widely used in many advanced applications like bearings(Full Ceramic Bearings and Hybrid Ceramic Bearings),Valves,Pumps,Petroleum,Chemical,Medical,Instruments/Meters,Machine Tools,Auto and Auto Components, Aviation,Aerospace,Millitary,or even BMX bikes,etc.
Regular Grades:Grade 3, Grade 5, Grade 10, Grade 16,Grade 20, Grade24,Grade 28,Grade 40, Grade 60, Grade 100.
With different Gauges and Sub Gauges.
In addition to these above finished precision Si3N4 Balls, Si3N4 Blank balls and Si3N4Valve Balls with holes are available on request.