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ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings

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ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings

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Brand Name : ZG

Model Number : MS

Certification : CE

Place of Origin : CHINA

MOQ : 1 piece

Price : USD10/piece

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 10000 pieces

Delivery Time : 5-8 working days

Packaging Details : Strong wooden box for Global shipping

Material : silicon nitride

Size : Customized

Features : excellent wear resistance; chemical inertness; no grinding in the product to be crushed; long service life

Color : Black

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Ceramic rolling bodies (balls, rollers) for rolling bearings

Ceramic rolling balls for rolling bearings with high-strength,resistant to corrosion and wear

Ceramic rolling elements for bearings have provided a new level of bearing performance and reliability. Thanks to unique properties of ceramic materials (primarily silicon nitride) it has been possible to significantly improve the durability and speed characteristics of bearings.

Related Data

Main component 99%Al2O3 S-SiC ZrO2 Si3N4
Physical
Property		 Density g/cm3 3.9 3.1 6 3.2
Water Absorption % 0 0.1 0 0.1
Sinter Temperature °C 1700 2200 1500 1800
Mechanical
Property		 Rockwell Hardness HV 1700 2200 1300 1400
Bend Strength kgf/mm2 3500 4000 9000 7000
Compression Intensity Kgf/mm2 30000 20000 20000 23000
Thermal
Property		 Maximum working
temperature		 °C 1500 1600 1300 1400
thermal expansion
coefficient
0-1000°C		 /°C 8.0*10-6 4.1*10-6(0-500°C) 9.5*10-6 2.0*10-6(0-500°C)
5.2*10-6(500-1000°C) 4.0*10-6(500-1000°C)
Thermal Shock resistance T(°C) 200 250 300 400-500
Thermal Conductivity W/m.k(25°C 31 100 3 25
300°C) 16 100 3 25
Electrical
Property		 Resisting rate of Volume ◎.cm 　 　 　 　
20°C >1012 106-108 >1010 >1011
100°C 1012-1013 – – >1011
300°C >1012 – – >1011
Insulation Breakdown
Intensity		 KV/mm 18 semiconductor 9 17.7
Dielectric Constant (1 MHz) (E) 10 – 29 7
Dielectric Dissipation (tg o) 0.4*10-3 – – –

At present, wear-resistant parts made of ceramic materials, cemented and graphite are an integral part of pumps, compressors, turbines and pipeline fittings.


Main applications:

  • installations of the electric centrifugal pumps;
  • pipeline accessories;
  • rod deep pum;
  • pumps to maintain pattern pressur;
  • rotary-plate vacuum pumps;
  • sealed pum;
  • plunger pumps;
  • slurry and mud pumps;
  • main line and supporting pum;
  • power and feed pumps;
  • various compressors and turbines.

Advantage of ceramic materials:

  • excellent wear resistance;
  • excellent corrosion resistance;
  • excellent coefficient of friction;
  • high thermal conductivity (heat removal from the friction zone, reduction of the temperature gradient and, accordingly, temperature stresses and deformations);
  • high modulus of elasticity (resistance to force deformations);
  • low temperature coefficient of linear expansion;
  • manufacturability (the possibility of providing a high quality surface treatment).

Materials:

ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings


Product Tags:

Si3N4 Silicon Nitride Ceramic Balls

      

Rolling Bearings Silicon Nitride Balls

      

3.2g/Cm3 Density Silicon Nitride Balls

      
Quality ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings for sale

ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings Images

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