693 Ceramic Bearing 3x8x4 MM

693 Full Ceramic Bearing Introduction:

Bearing Number: 693  bearing

Type: Full Ceramic Ball bearing

Inner/outer races: Si3N4 Ceramic with PTFE cage

Balls:  Si3N4 Ceramic

Size:3x8x4mm

693 Bearing Size Pictures:

 Ceramic  Bearings Si3N4 With Ceramic Material Have Below Features:

1.Can working at high temperature 800 degree ~1300 degree

with low coefficient of friction ceramic bearing have the ability to withstand much higher speed without exceeding too high temparature than steel bearings

2.Anti coorrosion

ceramic resists acids alkali blood salt and water ,so it will not corrod or rust

3 .No grease required

Ceramic balls require less lubrication and have a greater harness than steel balls which will contribute to increase bearing life .

4. Highest spin time

Because the ceramic has low coeffient of friction ,it is good material for any application seeking to have a high RPM'S

ZZ BEARINGS Are Professional Bearing Manufacturer In China, We Can Produce Full Ceramic Bearing And Hybid Ceramic Bearing Work At High Temperature .

1) Full ceramic bearings with ZrO2/Si3N4/SiC material ---non-magnetism,electrical insulation,wear resistant,anti corrosive.

2) Hybrid ceramic bearings (Stainless steel ring with  hybrid balls or Chrome steel rings with  hybrid balls ) ---high speed,self-lubricated.

3) Precision ceramic balls (ZrO2/Si3N4/SiC/Al2O3) ---vacuum,high and low temp,high precision ball screw set,valve balls for acid,alkali and salt.

Full Balls Bearing Application :

cearmic bearing can be working at any extree environment which require non-corrosize ,non-conductive or non-magnetic or high temperature area.