High quality ZrO2 Si3N4 full ceramic bearing 6308

Full Ceramic Ball Bearings

Full Ceramic 40x90 mm Ball Bearings, the inner diameter is 40mm, outer diameter is 90mm and the width is 23mm, this is a popular size that could be used in many applications, Bearings are made of Ceramic.

• Item: 6308 Ball bearings
• Type: Full Ceramic 40x90 mm
• Bearing Size: 40mm x 90mm x 23mm
• Inner/outer races: Si3N4 or ZrO2 Ceramic(Silicon Nitride or Zirconium Dioxide)
• Balls: Si3N4 Ceramic or ZrO2 Ceramic(Silicon Nitride or Zirconium Dioxide)
• Cage: PTFE

We have 2 types of ceramic bearing, hybrid ceramic bearing and full ceramic bearing, the hybrid ceramic bearing has steel inner and outer rings with ceramic balls, as for the full ceramic bearing; the inner, outer rings and the balls are made of ceramic. There are many kinds of ceramic materials, the most common ceramic materials are Si3N4 that stands for the silicon nitride ceramic material and is black colored, SiC stands for the silicon carbide material and also is black colored. and the ZrO2 that stands for the zirconium dioxide, also known as zirconia or zirconium oxide, they are white colored, a ZrO2 ball looks exactly like a pearl. the ceramic material is not stronger than steel, but ceramic bearing are lighter and have lower friction than steel, that makes ceramic bearing go faster with lower heat generated.

Ceramic bearings, stainless steel bearings, hybrid bearings

Demension: 40X90X23mm

Full ceramic (All -ceramic) bearing of ZrO2 material

Full ceramic bearing have excellence performance as special electrical and magnetism resistance, wear and corrosion resistance, lubrication and maintenance free when working, especially high and low-temperature application,etc.Could be used in awful environment and specially condition. The rings and balls made by full ceramic material: ZrO2, as a standard constructure, the cage made by PTFE, generally we also could make the cage with GRPA66-25, PEEK, PI, AISI SUS304,SUS316,Cu,etc.

Full ceramic (All -ceramic) bearing of Si3N4 material

Full ceramic bearing made with Si3N4 have some better performance than ZrO2, the rings and balls made by full ceramic material: Si3N4, as a standard constructure, the cage made by PTFE,generally we also could make the cage with GFRPA66-25, PEEK, PI, phonemic textiles tube, etc. Compares than the material of ZrO2. The SiN4 ceramics bearings could endure heavier load and could be used in higher temperature environment. Also we could offer precision ceramic bearing which generally used in high-speed and high-rigidity spindle, the manufactured clearance could be P4 to up grade.

Full ceramic (All-ceramic) bearings fo full complement balls

Full ceramic bearing of full complement balls has an add-ball gap on its side. Because using no cage design, the bearing able to install more ceramic balls than the standard construction, so the heavier radial load ability increased more.resistance and high temperature application. This series of bearing is not for high speed choice, it should be to install on the unforced.

Full ceramic (All-ceramic) bearing of ceramic cage

Ceramic cage has excellence performance as wear and corrosion resistance, high strength, lubrication and maintenance free when working. Adopting the ceramic cage, ceramic bearing can be used in the most inclemency environments as corrosive,low temperature, high vacuum. The normal used ceramic materials with ZrO2.

Hybrid construction ceramic ball bearing

Ceramic ball especially Si3N4 have the following performance as low density, high strength, low friction coefficient, electrical and magnetism resistance, wear resistance, well rigidity, lubrication and maintenance free when working, it is the best choice for rollers(inner ring and outer ring are made by metal) of the hybird construction ceramic ball bearing which are used in high-speed,high accuracy and long life environments. Normally, GCr15 or AISI44C, 316 ,304 makes inner ring and outer ring; The ceramic ball can adopt ZrO2, Si3N4 or Sic.

Stainless bearings

The high performance stainless steel bearings can provides not only with the cleanliness and corrosion resistance characteristic also with the high accuracy and excellent wear resistance compare to the high carbon chrome steel bearings. The rings and balls are made of the material as a standard structure of stainless steel bearing. The rings and balls are made of the material AISI440C(9Cr18Mo or 9Cr18), the cage and the framework of seal adoption the AI304 or AI316, production accuracy couldreach ISO standard ABEC-1 and above, and the vibration level reach Z1 grade and above.

We also can offer non-standard stainless steel bearings to meet some special type needs in engineering. Compare to high carbon chrome martensite stainless steel bearing. Austenite stainless steel bearings have even more excellent corrosion and wear resistance, magnetism resistance. The whole Austenite stainless steel bearings are made of AISI SUS316L(316) or SUS304(including inside and outside rings, balls and cage). Austenite stainless steel bearings can not harden completely by heat treatment, so it should not choose for heaver load or higher speed.

1.Deep groove ball bearing: 6000series, 6100series, 6200series, 6300series, 6400 series, 6800 series,6900 series, etc.

2. Angular contact ball bearing: 7100series, 7200series, 7300series, 7400series, etc.

3.Taper roller bearing: 30000series, 31000series, 32000series, 33000 series.

4.Spherical roller bearing: 20000series, 21000series, 22000series, 23000series.

5.Cylindrical roller bearing: N series, NU series, NJ series, etc.

6.Pillow block bearing: UC series, UCP series, UCF series, UCFL series.

7.Self aligning ball bearing: 1200series, 1300series, 2200series, 2300series. 

8.Needle Roller Bearing   

9.Sliding bearing   

10.Slewing Bearing

11.Rod End Joint Bearing  

12.Ceramic Bearing  

13.Bearing Accessories

My company equipment is advanced, leading the management level, the warehouse clean and orderly, mount guard after qualified staff skill training, greatly improve the quality of our products and reduce the production cost, follow up competitiveness in the bearing industry.Our company pays attention to technology innovation the technological innovation enables enterprises to form core competitiveness, and to keep a competitive strength.

1: Germany equipment,
2: dust-free workshop,
3: smokeless workshop,
4:5 s management system,
5: ERP warehouse outbound,

Welcome to visit our factory, and promote the communication and learning, and go further in the bearing industry .

ShangHai Bearing Exhibition 2015

a) How to prolong service life of bearings?

     Accurate installation and using,alignment,timely monitor,re lubrication etc.

b) Reason for bearings failure?

    Usually is incorrect using method,pollution,improper use of lubricant,damage happened in installation and handing,also including installation error.according to the traces can know the reason why is failure.

c) How to choose bearings?

    Analyse mechanical device and use conditions.clear the requiremment of bearings.select type of bearings,select distribution way of bearings.selet dimensions of bearings,select installation method of bearings.

d)When select bearings specifications,what you need to consider?

    The precision of the bearings(rotating precision,dimensional tolerances)internal clearance and preload bearing material and heat treatment.structure of cage and material.

e)Payment method,packing way,transport method,time of delivery?

   T/T,PAYPAL,WESTERN UNION,L/C

   Tube,box,carton,pallet,

   By sea,by air

   3-15days after receipt of payment.

Vicky chen

Skype: cluntbearing04

WhatsApp/Mobile: 0086 15088994214

QQ: 3326235362

Email: Vicky(at)