Ceramic Bearings,Ceramic Ball Bearing,Roller,Needle,Engine,Fishing Reel Ceramic Bearings - Lily
Lily ceramic bearings, from choose material - mixed grinding - CIP molding - High temperature and pressure GPS - Hot Isostatic Pressing - Polishing - Precision - Assembly - Inspection - Product.
Each step we put all our heart to it and refine it so as to present our clients the best products.Ceramic bearing have lots of feature, such as cold resistant, high temperature resistant, abrasion resistant, and non-magnetic, insulation, Reliable working, high speed and self-lubricating without oil and so on. It would be a necessity in extremely bad circumstance and special status.
According to the difference of the material, our ceramic bearing are divided into four types, including three is the
full ceramic bearing, another one is hybrid ceramic bearing.
Application: chemical industry, food mechanism, marine equipment sea water area and so on.
feature: with PTEE cages which have higher corrosion resistance, appliance temperature from 150 centigrade to 450 centigrade.
2,Silicon nitride bearings (Si3N4) full ceramic bearings series
Feature : this kind of ceramic bearings have wider range of application in material usage, it's hardness could reach to HRC80 and the extreme high temperature could reach to approximately 800 centigrade, therefore smooth surface and hardness and non-lubrication are attributions of this material.
Application: ultra-high vacuum, rc,high speed spindle machines, grinders, dental drill, instrument,skates ...
3,Silicon carbide (Sic) full ceramic bearing
Application : under extreme circumstance and special conditions, such as under extreme high temperature( recommend you use Full Ball Complement series), the extreme temperature can reach as high as 1300 centigrade; and strong corrosion chemical medicament(recommend you use PTFE cage) which have longer working longevity because of it's hardness can reach HRC90.
4,Chrome steel or stainless steel hybrid ceramic bearing
Application :
1; because of features and attributions of ceramic, there would be lots of limitation in processing which would lead this bearings prices to high position.
Therefore hybrid ceramic bearings be developed which with ceramic balls and steel outer rings and inner rings, most application in high speed and high precision.
2; ceramic ball, stainless steel(SUS440) outer ring and inner ring which both have attributions of corrosion resistance, wear resistance and self-lubricate.
Those above hybrid bearings can be apply in skate, rc model, electricity toy and so on.
Application is as under:
Aviation, navigation, petroleum, chemical industry, electro plating, metallurgy, medical radiation electronics application, medicine equipment, different equipment and instrument, toys and extreme vacuum wet applications and so on. It is a kind of new technology material.
The application introduction of ceramic bearings:
1. High-speed ceramic bearing, which has good capability of cold-resisting, small transmutation under force, high resistance of pressure, bad heat-conduct, small weight, small friction modulus.
2. High temperature ceramic bearing: the material temperature application from 100 centigrade to 1300 centigrade and won't be inflation cause of difference in temperature, they can be used in hermetic separator, smelt copper equipment, plastic-production equipment and so on.
3. Corrosion resistance ceramic bearing: material itself has good attribution of resisting corrosion can be used in strong acid, strong alkali, inorganic salt, organic salt, sea water area and so on. For instance in galvanizing equipment, electronic equipment, chemical industry, ships making, medical equipment and so on.
4, Non-magnetic ceramic bearing: because of non-magnetic, no dust would be attracted; therefore it will reduce the flaking of bearing surface in advance and improve the problem of noise. Therefore it can apply in demagnetization equipment and precision instruments.
5. Electric insulation ceramic bearing: cause of high electricity resistance, electricity arc damage can be avoided, therefore to different electric equipment which requires electric insulation would be a best choice.
6. Vacuum ceramic bearing: this kind of ceramic material has special attribution of lubrication without oil, so it can overcome the lubricate problem which other general bearing can not overcome under ultra-high vacuum.
Our company can supply you the above six kinds of ceramic bearings and for each of those bearings it can be apply in high temperature, high speed, strong acid, strong alkali, magnetic, electronic insulation and ultra-high vacuum, but different material have different attribution, when you choose the bearings you need, please tell us what kind of condition they would be used for, so as to enable us to recommend you the best suitable and longevity ceramic bearings for you.
The most common ceramic bearings type is ball bearing, in addition our ceramic bearings also include angular contact ball bearing, thrust ball bearing, self aligning ball bearings, insert bearings , full complement ball bearing , linear bearing ...
Ceramic and steel material, performance and date comparison chart
|
Item
|
Unit
|
SUJ2
|
ZrO2
|
Si3N4
|
SiC
|
Density
|
g/CM3
|
7.7
|
6
|
3.2 ~ 3.3
|
3.1
|
Coefficient of thermal expansion
|
10-6/k
|
10
|
10.5
|
3.2
|
4.5
|
Hardness
|
HV
|
700
|
1100~1300
|
1400~1700
|
2000~2500
|
HRC
|
62
|
70~75
|
75~80
|
85~90
|
Highest temperature resistance
|
C
|
120
|
450
|
800
|
1300
|
Modulus of elasticity E
|
GPa
|
208
|
210
|
300~320
|
350
|
Poisson's ratio
|
|
0.3
|
0.3
|
0.26
|
0.2
|
Bending strength RT
|
MPa
|
2400
|
600~900
|
600~1000
|
450
|
Fracture toughness Kic
|
MPam1/2
|
25
|
6~8
|
5~7
|
3~5
|
Thermal conductivity
|
W/mK
|
30~40
|
2~3
|
35
|
150
|
Specific resistance
|
mm2/m
|
0.1~1
|
105~1015
|
108~1018
|
10~103
|
