contact us

Try to get a Free Sample

No. 61, BinHe Road, LuoLong Zone, LuoYang City, P.R. of China

+86 (0379) 639 68877

operating hours

8:00 — 18:00

Consulting method

info@qibr.com

products

High-precision high-speed angular contact ball bearing

Customizable



LEARN MORE
  • QIBR Model Selection
  • QIBR Customized Bearing
  • QIBR Process Control
  • QIBR Sort and Grade
Dimensions Basic Load Rating Designation Weight     Installation Size Limiting Speed
mm kN              mm r/min
d D B Tmin hmin Cr Cor

 

kg da Da Ta ra1 Grease Oil
100 128 13 1 0.3 21.2 27.5 71820 0.2 104.6 120.4 1 1 8500 13000
110 140 16 1 0.3 31.9 40.5 71822 0.51 114.6 135.4 1 1 8000 13000
120 150 16 1 0.3 33.2 45 71824 0.55 124.8 145.4 1 1 7500 12000
130 165 18 1.1 0.6 39 53 71826 0.7 136 159

 

1 7000 11000
140 175 18 1.1 0.6 44.9 62 71828 0.8 146 169 1 1 6300 10000
150 190 20 1.1 0.6 53.5 74.5 71830 1.32 156 184 1 1 6300 9500
160 200 20 1.1 0.6 54 78 71832 1.25 166 194 1 1 5600 8500
170 215 22 1.1 0.6 80 110 71834 2 175 210 1 1 5600 8500
200 250 24 1.5 1 90 130 71840 2.5 208.5 241.5 1.5 1 4300 6000
220 270 24 1.5 1 151 263 71844 2.5 228.5 261.5 1.5 1 3800 5600
240 300 28 2 1 128 175 71848 4.1 250 290 2 1 3200 4800
260 320 28 2 1 127 190 71852 4.85 270 310 2 1 1400 1900
280 350 33 2 1 140 216 71856 7.2 290 340 2 1 1200 1700
320 400 38 2.1 1.1 190 290 71864 10 332 388 2 1 800 1000
340 440 38 2.1 1.1 219 345 71872 11.1 372 428 2 1

 

 

360 480 46 2.1 1.1 261.9 450 71876 18 392 468 2 1 1700 2400
380 500 46 2.1 1.1 292 501 71880 19.5 412 488 2 1

 

 

420 520 46 2.1 1.1 294 513 71884 20.4 432 508 2 1 750 1000
440 540 46 2.1 1.1 301 540 71888 21.1 452 528 2 1 750 1000
460 580 56 3 3 334 689 71892 34.5 474 566 2.5 1 850 1000
480 600 56 3 1.1 415 820 71896 35.5 494 686 2.5 1 850 1200
500 620 56 3 1.1 351 765 718/500 38 514 606 2.5 1 670 900
530 650 56 3 1.1 369 837 718/530 39.5 544 636 2.5 1 1100 1600
560 680 56 3 1.1 341 837 718/560 41.5 574 666 2.5 1 600 800
600 730 60 3 1.1 421 1044 718/600 47 614 766 2.5 1 560 750
630 780 69 4 1.5 518 1160 718/630 69.7 648 715 3.1 1.5

 

 

670 820 69 4 1.5 498 1161 718/670 77 688 802 3 1.5 850 1200
710 870 74 4 1.5 546 1467 718/710 93.5 725 855 3 1 800 1100
750 920 78 5 2 585 1620 718/750 110 768 902 4 2 400 530
850 1030 82 5 2 620 1674 718/850 140 868 1012 4 2 340 450
100 140 20 1.1 0.6 60.6 65.5 71920 0.8 106 134 1 1 8500 14000
110 150 20 1.1 0.6 62.4 72 71922 0.86 116 144 1 1 8000 13000
120 150 20 1.1 0.6 24.7 25.5 71924 1.15 116 144 1 1 10000 15000
130 180 24 1.5 0.6 92.3 108 71926 1.55 137 173 1.5 1.5 7000 11000
140 190 24 1.5 0.6 95.6 116 71928 1.65 147 183 1.5 1.5 6700 10000
150 210 28 2 1 90 120 71930 3 160 200 2 1 6300 9500
160 220 28 2 1 109 129 71932 3 170 210 2 1 6000 9000
170 230 28 2 1 110 140 71934 3.3 179 221 2 2 5600 8500
190 260 33 2 1 139 177 71938 4.45 199 255 2 2 5000 7500
200 280 38 2.1 1.1 150 210 71940 7.1 212 268 2 1 4300 6000
220 300 38 2.1 1.1 200 250 71944 7.2 232 288 2 1 3800 5600
240 320 38 2.1 1.1 203 285 71948 8.37 252 308 2 1 3200 4800
260 360 46 2.1 1.1 242 345 71952 13.5 272 348 2 1 1300 1800
280 380 46 2.1 1.1 226 337 71956 15 292 368 2 1 1100 1600
320 440 56 3 1.1 350 550 71964 25.5 334 426 2.5 1 800 1000
340 460 56 3 1.1 292 510 71968 27.5 354 446 2.5 1 800 1000
360 480 56 3 1.1 350 600 71972 29

 

 

 

 

800 1000
380 520 65 4 1.5 369 661.5 71976 40.5 395 505 3 1 850 1200
400 540 65 4 1.5 380.7 702 71980 42 415 525 3 1 800 1100
420 560 65 4 1.5 327 603 71984 44.5 435 545 3 1 700 950
440 600 74 4 3 456.3 936 71988 61 455 585 3 1 750 1000
460 620 74 4 1.5 456 936 71992 58 475 605 3 1 750 900
530 670 78 5 2 498 1098 719/500 78 518 652 4 1 630 850
560 710 82 5 2 556 1206 719/530 92 558 692 4 1 1000 1500
600 750 85 5 2 533 1161 719/560 105 578 732 4 2 560 750
630 800 90 5 2 644 1557 719/600 125 618 782 4 2 900 1300
750 950 106 6 3 767 1980 719/710 195 733 927 5 2 800 1100

Angular contact ball bearings can bear both radial and axial loads. It can work at higher speed. The larger the contact angle, the higher the axial load bearing capacity. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane. High precision and high speed bearings usually take a 15° contact angle.

Angular contact ball bearing precision levels include dimensional tolerances and rotation precision. The precision is marked from low to high as P0 (ordinary), P6 (P6X), P5, P4, P2.

High-precision high-speed angular contact ball bearings can be used in pairs to withstand axial loads in both directions. Commonly-used pairing forms are back-to-back configuration, face-to-face configuration, and serial configuration.

High-precision high rotation speed angular contact bearing (contact angle a is 15°)

Back-to-back combined angular contact ball bearing (contact angle a is 15°)

face-to-face combined angular contact ball bearing (contact angle a is 15°)

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

Hot Sales

For more information, please contact us.

contact us