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products

Super-long-life super-high-speed ceramic ball angular contact ball bearing

Customizable



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  • QIBR Model Selection
  • QIBR Customized Bearing
  • QIBR Process Control
  • QIBR Sort and Grade
Code Dimensions α=18°
related load limit rotation speed
d D B Cr Cor grease oil
mm KN r/min
LC706 6 17 6 2.4 0.48 156000 243000
LC707 7 19 6 2.6 0.55 138000 215000
LC708 8 22 7 2.9 0.7 120000 186000
LC709 9 24 7 4.05 1 109000 169000
LC71900 10 22 6 3.05 0.77 112000 175000
LC7000   26 8 4.3 1.1 100000 155000
LC71901 12 24 6 3.15 0.83 100000 155000
LC7001   28 8 4.15 1.12 90000 140000
LC71902 15 28 7 4.3 1.22 83000 130000
LC7002   32 9 5.85 1.7 76000 120000
LC71903 17 30 7 4.5 1.34 76000 120000
LC7003   35 10 5.85 1.83 69000 107000
LC71904 20 37 9 6 1.96 63000 98000
LC7004   42 12 9.5 3.2 58000 90000
LC71905 25 42 9 6.4 2.36 53000 83000
LC7005   47 12 9.65 3.45 50000 78000
LC71906 30 47 9 9.8 3.65 46000 73000
LC7006   55 13 13.4 4.9 42000 65000
LC71907 35 55 10 10.8 4.4 40000 62000
LC7007   62 14 14.3 5.85 37000 58000
LC71908 40 62 12 11.2 4.8 35000 55000
LC7008   68 15 15.3 6.55 33000 52000
LC71909 45 68 12 15.6 6.7 30000 48000
LC7009   75 16 19.6 8.5 30000 45000
LC71910 50 72 12 16 7.2 29000 45000
LC7010   80 16 20.4 9.15 27000 43000
LC71911 55 80 13 20.8 9.5 26000 41000
LC7011   90 18 29 13.2 24000 38000
LC71912 60 85 13 21.6 10 24000 38000
LC7012   95 18 30 14 23000 36000
LC71913 65 90 13 22 10.8 23000 36000
LC7013   100 18 30.5 15 21000 33000
LC71914 70 100 16 28.5 14 21000 32000
LC7014   110 20 40 19.6 20000 31000
LC71915 75 105 16 29 15 20000 31000
LC7015   115 20 40.5 20 18000 39000
LC71916 80 110 16 32.5 16.6 18000 39000
LC7016   125 22 48 24.5 17000 27000
LC71917 85 120 18 33.5 18 17000 27000
LC7017   130 22 49 25 16000 26000
LC71918 90 125 18 36.5 19.6 16000 26000
LC7018   140 24 58.5 30 15000 24000
LC71919 95 130 18 38 20.8 16000 24000
LC7019   145 24 58.5 31 15000 23000
LC71920 100 140 20 45.5 25 15000 23000
LC7020   150 24 58.5 31.5 14000 22000
LC71921 105 145 20 46.5 26.5 14000 22000
LC7021   160 26 76.5 40.5 13000 21000
LC71922 110 150 20 54 30.5 13000 21000
LC7022   170 28 76.5 41.5 12000 20000
LC71924 120 165 22 56 33.5 12000 19000
LC7024   180 28 80 44 12000 18000
LC71926 130 180 24 64 39 11000 18000
LC7026   200 33 102 58.5 10000 16000
Code Dimensions     α=18°      
        Rated load   Limit Rotation Speed  
  d D B Cr Cor Grease Oil
  mm     KN   r/min  
XC706 6 17 6 2.4 0.48 156000 243000
XC707 7 19 6 2.6 0.55 138000 215000
XC708 8 22 7 2.9 0.7 120000 186000
XC709 9 24 7 4.05 1 109000 169000
XC71900 10 22 6 3.05 0.77 112000 175000
XC7000   26 8 4.3 1.1 100000 155000
XC71901 12 24 6 3.15 0.83 100000 155000
XC7001   28 8 4.15 1.12 90000 140000
XC71902 15 28 7 4.3 1.22 83000 130000
XC7002   32 9 5.85 1.7 76000 120000
XC71903 17 30 7 4.5 1.34 76000 120000
XC7003   35 10 5.85 1.83 69000 107000
XC71904 20 37 9 6 1.96 63000 98000
XC7004   42 12 9.5 3.2 58000 90000
XC71905 25 42 9 6.4 2.36 53000 83000
XC7005   47 12 9.65 3.45 50000 78000
XC71906 30 47 9 9.8 3.65 46000 73000
XC7006   55 13 13.4 4.9 42000 65000
XC71907 35 55 10 10.8 4.4 40000 62000
XC7007   62 14 14.3 5.85 37000 58000
XC71908 40 62 12 11.2 4.8 35000 55000
XC7008   68 15 15.3 6.55 33000 52000
XC71909 45 68 12 15.6 6.7 30000 48000
XC7009   75 16 19.6 8.5 30000 45000
XC71910 50 72 12 16 7.2 29000 45000
XC7010   80 16 20.4 9.15 27000 43000
XC71911 55 80 13 20.8 9.5 26000 41000
XC7011   90 18 29 13.2 24000 38000
XC71912 60 85 13 21.6 10 24000 38000
XC7012   95 18 30 14 23000 36000
XC71913 65 90 13 22 10.8 23000 36000
XC7013   100 18 30.5 15 21000 33000
XC71914 70 100 16 28.5 14 21000 32000
XC7014   110 20 40 19.6 20000 31000
XC71915 75 105 16 29 15 20000 31000
XC7015   115 20 40.5 20 18000 39000
XC71916 80 110 16 32.5 16.6 18000 39000
XC7016   125 22 48 24.5 17000 27000
XC71917 85 120 18 33.5 18 17000 27000
XC7017   130 22 49 25 16000 26000
XC71918 90 125 18 36.5 19.6 16000 26000
XC7018   140 24 58.5 30 15000 24000
XC71919 95 130 18 38 20.8 16000 24000
XC7019   145 24 58.5 31 15000 23000
XC71920 100 140 20 45.5 25 15000 23000
XC7020   150 24 58.5 31.5 14000 22000
XC71921 105 145 20 46.5 26.5 14000 22000
XC7021   160 26 76.5 40.5 13000 21000
XC71922 110 150 20 54 30.5 13000 21000
XC7022   170 28 76.5 41.5 12000 20000
XC71924 120 165 22 56 33.5 12000 19000
XC7024   180 28 80 44 12000 18000
XC71926 130 180 24 64 39 11000 18000
XC7026   200 33 102 58.5 10000 16000

Ceramic ball angular contact ball bearing is a wide application of industrial ceramic at industrial fields, that is, use hot pressed Si3N4 ceramic ball as roller, and the bearing ring is steel too. Ceramic ball angular contact ball bearing is maintenance free and is especially suitable for high speed application.

1. The ceramic ball contact is resistant to high temperature and has a small thermal expansion coefficient. Under high temperature environment, the bearing roller will not expand due to temperature. The temperature of the ordinary bearing is 160 ° C, and the temperature of the ceramic ball bearing is 220 ° C. which greatly improves the high temperature resistance of the bearing.

2, the ceramic ball angle contact, because of the specialty of the ceramic ball, it has self-lubricating property and small friction coefficient. The ceramic ball bearing has a very high rotational speed, the rotation speed of the ceramic ball is more than 1.5 times that of the common bearing.

3, ceramic ball angular contact life is long, because the ceramic ball has self-lubrication property. Comparing to the general bearing grease may dry, the ceramic ball can operate without adding grease; It also improves the service life of the bearing, which is 2 to 3 times longer than that of the general bearing.

4, ceramic ball bearings have insulation property, the ceramic ball separates the inner ring and outer ring of the bearing and the ceramic ball is not conductive, so it can be used in the conductive occasion with normal operation.

High-speed ceramic angular contact ball bearing

Raw material

QIBR precision anti-friction bearings are usually made of chrome steel, which consist of about 1% carbon, 1.5% chromium and a small amount of manganese, silicon, and sometimes a small amount of molybdenum.

QIBR offers you a wide range of material options such as GCr15, 100Cr6, SKF 3, SUJ-2 etc. At the same time, some models of QIBR are available in stainless steel.

The rolling element can be ceramic ball (silicon nitride). Due to ceramic is kind of special material, the ceramic ball bearing has advantages of higher rotation speed, good self-lubricating property, and the rigidity is 15%-20% higher than the general bearing, and better high temperature resistance.

Bearing cage

The high-quality cage used by QIBR bearings ensure that the balls are evenly distributed in the bearing rings and can be rotated properly.

The cage has stamped steel wave type, stamped steel rivet type, nylon or phenolic plastic.

QIBR offers a wide range of advice and options depending on the operating conditions.

Seals

In order to prevent contaminants from entering the inside of the bearing, QIBR uses a metal dust cover or a rubber seal with a metal skeleton.

QIBR are able to choose two types as a combination seals according to your working conditions, or choose different kinds of seal materials, such as nitrile rubber BUNA, acrylic rubber HYCAR, fluoro rubber VITON.

Type of lubrication

Lubricating oil is the basic lubricant for ball bearings. Previously most of the lubricating oil was extracted from petroleum. Synthetic oils are now acceptable due to improved performance, such as two lipid synthetic oils, silicones and fluorocarbon synthetic oils. In general, lipid synthetic oils have better low temperature properties, lower volatility, and better temperature characteristics and viscosity compared than petroleum refined oils. Essentially all lubricants contain additives to inhibit chemical changes, prevent metal corrosion, and improve physical properties (antifoam, etc.).

The silicone and fluorocarbon synthetic oils that adopted by QIBR have lower volatility and wider temperature/viscosity characteristics.

Radial clearance

The radial clearance is the gap between the steel ball and the ring. QIBR is precisely tailored to customer's temperature conditions, interference fit, misalignment of the bearing's axis, required noise level and speed.

Service life and the rated load

The bearing life is the number of bearing rotations before the fatigue occurs on the ring or any rolling element (or the rotation time at a constant speed). However, the same set of bearings will not necessarily have the same life under the same conditions. In this case, the rated life is the number of rotations that 90% of the bearings in this group can reach or exceed before bearing weariness (or the rotation time at a constant speed). The service life of QIBR series bearings are 10%-20% longer than other bearings of the same model, through strict production process, high standard material selection, precision control.

The adopted steel balls

The steel balls in the deep groove ball bearings used by QIBR are mainly designed according to the load requirements of the bearing. The bearing ball sizes of different models are different, generally the value of rib coefficient Kd (ditch depth) range 0.35-0.40. , related to bearing diameter, such as 6000 series Kd = 0.35, 6400 series Kd = 0.40; 6200 and 6300 series, d ≤ 25mm take Kd = 0.35, d > 25mm take Kd = 0.40. Groove depth = Kd × steel ball diameter.


Bearing steel ball material comparison table
GB (China) Gcr15 GCr15SiMn
ASTM/AISI (USA) 52100 *
ГОСТ(Russia) ШX15 ШX15CГ
BS (UK) 534A99 *
JIS (Japan) SUJ2 SUJ3
NF (France) 100C6 100CrMn6
VDEh (Germany) 100Cr6 (1.3505) 1.352
Grade of ball

G3, G5, G10, G16, G20, G24, G28, G40, G60, G100, G200

Grade of roller

G1, G1A, G2, G2A, G3, G5

Bearing Standard
Bearing Precision Grade
GOST Grade 0 Grade 6 Grade 5 Grade 4 Grade 2
ISO P0 P6 P5 P4 P2

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