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Ceramic Ball Bearing

Ceramic Ball Bearings - CHIN SING
Ceramic Ball Bearings - CHIN SING
Product Name : Ceramic Ball Bearing
Product Description

Full ceramic ball bearings constructed entirely of ceramic material. Inner/outer races and balls are made of Silicon Nitride (Si3N4) or Zirconium Oxide (ZrO2). They are available as full complement (no cage) or with a cage made from PEEK or PTFE. Full ceramic bearings are for medium load and medium speed applications. It is not possible to achieve the inner and outer ring roundness that is found with precision steel bearings, so full ceramic bearings have lower speed ratings.

Because it can be used in extreme badly environment and special situation, it applies to aviation, seafaring, petroleum, chemical industry, automobile, electronic equipment, metallurgy, electric power, textile, medical device, vacuum equipment and military affairs field.
Ceramic ball bearings item No: 6000、6200/6300/6400、6800、6900/5200、3200/5300、3300、1200、2200、7000、7100、7200、51100、51200、51300、UC、micro ball bearing series

Inquiry
Product Introduction

Characteristic

High temperature resistance, corrosion resistance, anti-magnetic, electrical insulation, vacuum, light specific gravity, lubrication-free(Sl3N4 3.2g/cm3) (ZrO2 6.2g/cm3) (bearing steel 7.85g/cm3)

  1. Higher hardness and better elasticity compare to standard steel bearings.
  2. Full ceramic bearings can be run completely dry.
  3. Excellent corrosion resistance allows them to run in concentrated acids, alkalis or submerged in seawater without corroding.
  4. More suitable for temperature variation.
  5. The life cycle of full ceramic bearings are much longer than steel bearings.
  6. Prevent electrical arcing. The natural insulating properties of ceramic material eliminate this type of damage.

Application

Semiconductor manufacturing equipment, pharmaceutical equipment, wet process equipment, chemical equipment, TFT-LCD equipment, PCB equipment, printing equipment, food equipment, optical equipment, vacuum equipment.

Material

  • Inner/outer races=> ZrO2、Si3N4、SIC
  • Balls=> ZrO2、Si3N4、SIC、Glass
  • Cage=>PEEK、PTFE、Bakelite、Nylon、Full complement (no cage)

Product Model : Ceramic bearing

Technical Data
 Silicon Nitride Si3N4Zirconium Oxide ZrO2
Density (g/cm³) 3.20~3.30 6.05
Coefficient of thermal expansion (10-6/k) 3.2 10.5
Elastic modulus (Gpa) 300~320 210
Poisson's ratio 0.26 0.30
Hardness (HRC) 75~80 70
Flexural strength (Mpa) 200 300
Compressive strength (Mpa) 1400 2100
Fracture toughness (Mpa．m1/2) 6.0~7.0 10.0
Thermal conductivity (W/mk) 18 2
Electrical resistivity (Ω•mm2/m) 1018 1015
Max temperature (°C) 800 550
Corrosion resistance High High
Dimensional stability High (Not easy to change with temp.) -
Dry friction Low Low
Magnetic Non Non
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