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BeiJing ZhongXingShi Qiang Ceramic Bearings Ltd.,Co

BeiJing ZhongXing ShiQiang Ceramic Bearing Co.Ltd(ZXSQ)

BeiJing ZhongXing ShiQiang Ceramic Bearings Co.Ltd,   is a high-tech ceramic special company in BEIJING.
The main products of company, zirconia,Aluminum oxide,silicon carbide,silicon nitride bear-ings,balls, and a great many workpieces of the mentions ceramic. The bearings have obtai-ned the CHINESE STATE NEW PRODUCT,in 2002 , and seven patents assigned by China Patent office, SQ produces ceramic bearings,balls and other products in quantities to meet the requirement of domestic and foreign customers. the ball’s size is fro-m 0.5 to 90mm and precision includes G5-G100, All qualitles are certified by national bearing compo-nents certified center. Full ceramic ball bearings   (outer ring ,inner ring and ball are madeof ceramics,cage is made of Teflon or graphite reinforcing )and hybrid ceramic ball beari-ngs (outer ring and inner ring are made of steel) made by ZXSQ and its cooperative units have been exported to USA、GERMANY、JAPAN、TA IWAN AND KOREA customer andother countries and areas. The ZXSQ products of ceramic and ceramic bearings have been successfully applied in aviation and aerospace spheres, contributing to a lot fornational defe-nse. Today   ceramic bearings of various specification in a wide rang of sizes,which are made by ZXSQ,have been assembled in precision, high speed main shaft dental drill instru-ment bearing, computer hard disk driver and electric fan, anti-magnetic, anti-corrosion, high-temperature, applications.
Field of Application
一)High temperature field
The transmit roller of high temperature furnaces:Si3N4 ceramic retains strength and harden-ss nearly up to 800℃,and Aluminum oxide 、silicon carbide   nearly   up to 1000--1400℃,but bearing steel hardness drops above 120℃
二)High-speed rotation field
Such as high speed motor spindle bearings,main shaft bearings of machine.The specific gra-vity of Si3N4 is 3.20g/cm and that of bearing steel is 7.85g/cm,We can see the former ismuch lower than the latter,therefor the ceramic rolling elements can effectively restrain the centrifugal force,which produces in high speed rotation,and reduce the load of rolling ele-ments and race way corresponding reduces.This is good to prevent surfaces from damage.
三)Aviation and airspace fields
The coefficient of thermal expiation of Si3N4 is 0.0000032/k but that of bearing steel is 0.00001/k,that are nearly in the ration of 1 to 4. Thereford Si3N4 cermic bearings are mo-re stable and reliable in a temperature changeable condition.
四)Main shaft of machine tools
The Si3N4 ceramic has double the hardness of bearing steel,and 1/3 modulus of elasticitylarger than that of bearing steel,We can found that the elastic deformation of Si3N4 is small under an identical loading.
五)Chemical machinery,food industry and marine industry
The ceramic bearings can solve corrosion problems Ex. acid ,alkali ,salt and so on.
六)High vacuum field
In high vacuum field people take the advantage of self-lubrication of ceramic bearings to replace the bearing in order to prevent vacuum from lubrication contamination.
七)Strong magnetic environment
n a strong magnetic environment the metal powder which is produced from wear of steel bearing,adheres the surfaces of rolling element and race way and causes flanking in aduance and increasing noise. The solution to this problem is also using ceramic bearing.
八)Toys ,roller skates,model navigation and motor-driven toys
It is the price factor of ceramic bearing that limits its wide use in the world.So up to no-w most applications of ceramic bearing are merely in high speed,high precision mechanism,in addition the hybrid construction of ceramic bearing,that is ceramic ball with steel inn-er ring and outer ring,is most adopted.Owing to adopting net shaping technology the using of above mentioned spheres but also of roller skates,model navigation and motor-driven toys.
Ceramic materials are noted for their characters of high strength in high temperature,high rigidity,corrosion resistance,high temperature resistance, electrical insulation, non-magnetic, thesecharacters qualify them for replacing steel to make bearings to meet the requitements in asevere condition where a steel bearing can not be competent.
Non-standard bearing orders to specifications arranged by customers are also welcomed.

Main ProductsThe Most Competitive Products
Full ceramic ball bearing ;ceramic hybrid bearings,the gride ABEC1-ABEC5,ceramic ball,the gride G28-G5. include SI3N4(GPS), SIC(normal press sintering ), ZrO2(TZP-3Y), AL2O3(99.5%)
the bearings min inner: 4mm, max outer:180mm,the ball size:from 0.5mm-90mm
Full ceramic ball bearing ;ceramic hybrid bearings,the gride ABEC1-ABEC5,ceramic ball,the gride G28-G5. include SI3N4(GPS), SIC(normal press sintering ), ZrO2(TZP-3Y), AL2O3(99.5%)

Contact Us
BeiJing ZhongXingShi Qiang Ceramic Bearings Ltd.,Co | Full ceramic ball bearing ;ceramic hybrid bear
Room 506 ,No,4 Building 2 Malian south Road BeiJing XuanWu District


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Contact Name
MR.Tao Wang
Chief Engineer
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