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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

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

Large Image :  ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings

Product Details:
Place of Origin: CHINA
Brand Name: ZG
Certification: CE
Model Number: MS
Payment & Shipping Terms:
Minimum Order Quantity: 1 piece
Price: USD10/piece
Packaging Details: Strong wooden box for Global shipping
Delivery Time: 5-8 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 10000 pieces

ROLLING BEARINGS SI3N4 SILICON NITRIDE CERAMIC BALLS for rolling bearings

Description
Features: Excellent Wear Resistance; Chemical Inertness; No Grinding In The Product To Be Crushed; Long Service Life Material: Silicon Nitride
Size: Customized Color: Black
Highlight:

Si3N4 Silicon Nitride Ceramic Balls

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Rolling Bearings Silicon Nitride Balls

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3.2g/Cm3 Density Silicon Nitride Balls

 

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 0

 

 

 

 

Contact Details
HENAN ZG INDUSTRIAL PRODUCTS CO.,LTD

Contact Person: Daniel

Tel: 18003718225

Fax: 86-0371-6572-0196

Send your inquiry directly to us (0 / 3000)