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Ceramic parts

Ceramic Balls Smoothness And Hardness Wear Strength Alumina Zirconia Si3N4 SiC Ball For Valve Bearing With Custom

  • Materials：Alumina (Al2O3)/ Zirconia(ZrO2) /Si3N4 /SiC ...etc
  • Sizes：Custom according to the drawings
  • Delivery times：2 -25 days(depends on the quantity)
  • Precision：Ra 0.1um tolerance: 0.001mm... etc
  • Features：Heat resistance / Wear resistance / High purity / Refractory / High Corrosion / Good Insulation...

Hotline

+86181-2297-4730

E-mail

admin@cerampart.com

Ceramic Balls Smoothness And Hardness Wear Strength Alumina Zirconia Si3N4 SiC Ball For Valve Bearing With Custom


High quality, high ceramic purity, high precision, fast delivery, ceramic part and component OEM

The increased hardness of the ceramic ball means that the contact area between the ball and the track is reduced, which leads to lower friction, higher potential speeds and less energy wasted. The hardness and extremely smooth surface also means that the balls are far more durable than steel balls.

Specification:
1. Refractory, High Temperature Resistance, Maximum Used Temperature: 1800 ºC (3272ºF)...
2. Hardness Strength Up To Mohs 9.0; HRA 80-90, Wear Resistance wear rate 0.68 mm3·m-2·h-1....
3. High Voltage, Good Insulation Performance ,Electrical Resistivity Up To 10∧14 Ohm.Cm...
4. High Polished Surface Up To Rz0.8(Ra0.1) ...
5. Superior Mechanical Strength, Max 10 MPa.m1/2 Fracture toughness,
6. Pressure Resistance, Max 2300MPa compressive strength...
7. Anti-High Corrosion Resistance, Such As Acid  Alkali Resistance...
8. Long Service Life...
9. Other excellent property

Our ceramic ball made from advance technical ceramics,such as  Alumina ,Zirconia, Si3N4, SiC... etc with excellent property.

Ceramic balls materials:
· 95%--99.99% Alumina(Al2O3)  · Zirconia(ZrO2):TTZ; YTZP; ZDY · Silicon Carbide  · Silicon Nitride...
· Flexural strength · Chemical resistance · Electrical insulation · Corrosion resistance · Dielectric strength
· Wear resistance · Temperature resistance · Thermal conductivity · High voltage · Hardness...

Parts of us manufactuer ceramic ball:
Size Size
Inch mm Inch mm
1/16"   1.500  3/4" 19.05
  1.5875 25/32" 19.844
5/64"   1.9844 20
  2.000 13/16" 20.638
3/32"   2.381 21
  2.500 27/32" 21.431
7/64"   2.778 22
  3.000 7/8" 22.225
1/8"   3.175 23
Custom sizes can be produced by request. Email: admin@cerampart.com
Contact us for price and delivery information.
Shipping within 2 working days avaibles in stocks		  
Material   Ceramic grade  Density (Kg/dm3) Hardness
Ceramic balls Silicon Nitride Si3N4 balls – Class I ASTM F2094 3,26 1400-1600 HV
Alumina Oxide – Al2O3 balls 3,90 1250 -1700 HV
Zirconium Oxide -ZrO2 balls 6,00 1200 HV
Silicon Carbide -SiC balls 3,15 2200-2800 HV

ISO 3290 : 2001 (E) (Values in Micron)
Grade Variation of ball diameter VDwsMax. Deviation from spherical form tDwMax. Surface roughness RaMax. Lot diameter Variation VDwLMax.
G3  0.08 0.08 0.01 0.1
G 5  0.13 0.13 0.014 0.25
G 10  0.25 0.25 0.02 0.5  
G 16 0.4  0.4  0.025 0.8  
G 20 0.5  0.5  0.032 1     
G 24 0.6  0.6  0.04 1.2  
G 28 0.7  0.7  0.05 1.4  
G 40 1     1     0.06 2    
G 60 1.5 1.5  0.08 3    
G100 2.5 2.5  0.1 5    
G 200 5    5     0.15 10     



Ceramic materials
· 95%--99.99% Alumina (Al2O3)   · Silicon Carbide   · Silicon Nitride  · TTZ: Magnesia partially stabilized Zirconia (ZrO2)
· YTZP: Yttria partially stabilized Zirconia (ZrO2)   · ZDY: Yttria fully stabilized Zirconia (ZrO2)...

 
Al 2O 3		 ZrO2/Y2O3 ZrO2/MgO MgO SiC Si3N4 Reaction sintered Si3N4 Hot pressed ALN
Physical properties                
Density (g/cm3) 3,9 5,9 5,75 3,58 3,2 3,27 3,29 3,26
Molecular weight (g/mole) 102 - - 40,4 40,1 140 140 41
Maximum service temperature air (°C) 1700- 1800 1500 1000 2200 1500 1200- 1500 1100- 1600 1000- 1800
Mechanical properties                
Hardness (Mohs) 9 - - 5,5 9 - - 7
Modulus of elasticity (GPa) 300-400 200 200 250-300 420 170-220 280-310 318
Poisson's ratio 0,25 - - 0,18 0,14 0,25-0,26 0,27 0,25
Fracture toughness (MPa.m1/2) 2-3 7-13 6-10 - 2,5-3,5 3,5-5 6,1 4,5
Electrical properties                
Dielectric constant 9-10 - - 9-10 - 10 10 9,2
Electrical resistivity at 20°C (Ohm.cm) >10 14 10 13-10 14 >10 10 - 10 2-10 6 >10 7 10 12- 10 15 >10 14
Dielectric strength (kV/mm) 10-20 9 2-10 - - - - 15
Thermal properties                
Specific heat (J/K/kg) 900 400-500 420 870-880 750 690 680-800 800
Thermal conductivity (W/m/K) at 20°C 26-35 2,2-3,2 1,5-2,5 40-50 63-155 9-30 15-43 180
Coefficient of thermal expansion ( 10-6) from 20 to 1000°C 8-9 10-11 5-16 10-13 4-5 3 3,3 4,4-5,3
Melting point (°C) 2050 2590 - 2800 2500 1900 1900 2200

Precision of manufacture
Dimensional accuracy Up to 0.001mm
Smoothness Highest possible mirror
Concentricity Up to 0.003mm
Parallelism Up to 0.002mm
The inner hole tolerance The minimum  0.005mm
Straight flute The narrowest 0.1x100mm
The thickness of the size Minimum to 0.02mm
The screw thread Minimum internal thread M2
Cylindricity Up to 0.004mm
The linear tolerance Up to 0.001mm
The smallest aperture The minimum 0.07mm
Precision process CNC maching,grinding,lapping
Surface finish Glazed,polishing or metallized
Visual quality:
1. No cracks,  no dark dots, no contamination and sharp edges;
2. Evenly distributed glaze with very smooth surface


Customization & Machining Service
As a professional manufacturer of industrial ceramic components.We can custom the sepcial specifications of ceramic balls or other ceramic parts.High quality,Factory price, on-time delivery, High composition of ceramics

FAQ
1. Monthly Capacity: 50,000-60,000 pcs;
2. Material: OEM or as per your suggestion;
3. Lead time: about 7-10 days mass, pls confirm the quantities required;
4. Incoterm: FOB, CFR, CIF;
5. Delivery Cost: It is determinated by the destination port;
6. Payment Term: PayPal; T/T; L/C.
7. Shipment: by sea, by air, by courier, by post, etc.
 
Feedback
1. For any query or doubt, please contact us firstly, we will update with you soon;
2. For any other satisfaction, please also feedback to us, which could improve our service better and better.
 

For more information about ceramics parts,please contact our engineers in time  >>>       
 

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Dongguan Mingrui Ceramic Technology Co., Ltd.
TEL：+8618122974730
MB：+86 181 2297 4730 Tel：+86 746 3386888
Skype：+86 181 2297 4730
Email：admin@cerampart.com
ADD：No. 21, Chuangxing Road, Shangsha Second Industrial Zone, Chang'an Town, Dongguan City