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info@qibr.com

products

Three or four point angular contact ball bearings

Customizable


  • Standards:GOST/ASTM/GB
  • Inner diameter:20mm-280mm
  • Outer diameter:50mm-400mm
  • Weight:0.4kg-500kg
  • Components:outer ring, inner ring, steel ball, seal and grease
  • Applications:oil pumps, blowers, air compressors, various types of transmissions, fuel injection pumps, various types of reducers, food packaging machinery, inspection and analysis equipment, fine chemical machinery

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  • QIBR Model Selection
  • QIBR Customized Bearing
  • QIBR Process Control
  • QIBR Sort and Grade

Serial number

Designations

  Boundary  

Mounting dimensions

Structure size

dimensions

Ext gear

D

d

H

D1

D2

n

Ф

n1

D3

d1

H1

h

1 QIBR-131.25.500 634 366 148 598 402 24 18 4 537 526 138 32
QIBR-132.25.500
2 QIBR-131.25.560    694 426 148 658 462 24 18 4 597 586 138 32
QIBR-132.25.500
3 QIBR-131.25.630 764 496 148 728 532 28 18 4 667 656 138 32
QIBR-132.25.630
4 QIBR-131.25.710 844 576 148 808 612 28 18 4 747 736 138 32
QIBR-132.25.710
5 QIBR-131.32.800 964 636 182 920 680 36 22 4 841 830 172 40
QIBR-132.32.800
6 QIBR-131.32.900 1064 736 182 1020 780 36 22 4 941 930 172 40
QIBR-132.32.900
7 QIBR-131.32.1000 1164 836 182 1120 880 40 22 5 1041 1030 172 40
QIBR-132.32.1000
8 QIBR-131.32.1120 1284 956 182 1240 1000 40 22 5 1161 1150 172 40
QIBR-132.32.1120
9 QIBR-131.40.1250 1445 1055 220 1393 1107 45 26 5 1300 1287 210 50
QIBR-132.40.1250
10 QIBR-131.40.1400 1595 1205 220 1543 1257 45 26 5 1450 1437 210 50
QIBR-132.40.1400
11 QIBR-131.40.1600 1795 1405 220 1743 1457 48 26 6 1650 1637 210 50
QIBR-132.40.1600
12 QIBR-131.40.1800 1995 1605 220 1943 1657 48 26 6 1850 1837 210 50
QIBR-132.40.1800
13 QIBR-131.45.2000 2221 1779 231 2155 1845 60 33 6 2055 2033 219 54
QIBR-132.45.2000
14 QIBR-131.45.2240 2461 2019 231 2395 2085 60 33 6 2295 2273 219 54
QIBR-132.45.2240
15 QIBR-131.45.2500 2721 2279 231 2655 2345 72 33 8 2555 2533 219 54
QIBR-132.45.2500
16 QIBR-131.45.2800 3021 2579 231 2955 2645 72 33 8 2855 2833 219 54
QIBR-132.45.2800
17 QIBR-131.50.3150 3432 2868 270 3342 2958 72 45 8 3213 3196 258 65
QIBR-132.50.3550
18 QIBR-131.50.3550 3832 3268 270 3742 3358 72 45 8 3613 3596 258 65
QIBR-132.50.3550
19 QIBR-131.50.4000 4282 3718 270 4192 3808 80 45 8 4063 4046 258 65
QIBR-132.50.4000
20 QIBR-131.50.4500 4782 4218 270 4692 4308 80 45 8 4563 4546 258 65
QIBR-132.50.4500

Serial number

Designations

Boundary dimensions

mounting dimensions

Structure size

Toothless

D

d

H

D1

D2

n

Ф

n1

D3

d1

H1

h

1 QIBR-010.20.200 280 120 60 248 152 12 16 2 201 199 50 10
2 QIBR-010.20.224 304 144 60 272 176 12 16 2 225 223 50 10
3 QIBR-010.20.250 330 170 60 298 202 18 16 2 251 249 50 10
4 QIBR-010.20.280 360 200 60 328 232 18 16 2 281 279 50 10
5 QIBR-010.25.315 408 222 70 372 258 20 18 2 316 314 60 10
6 QIBR-010.25.355 448 262 70 412 298 20 18 2 356 354 60 10
7 QIBR-010.25.400 493 307 70 457 343 24 18 2 401 399 60 10
8 QIBR-010.25.450 543 357 70 507 393 24 18 2 451 449 60 10
9 QIBR-010.30.500 602 398 80 566 434 20 18 4 501 498 70 10
9′ QIBR-010.25.500 602 398 80 566 434 20 18 4 501 499 70 10
10 QIBR-010.30.560 662 458 80 626 494 20 18 4 561 558 70 10
10′ QIBR-010.25.560 662 458 80 626 494 20 18 4 561 559 70 10
11 QIBR-010.30.630 732 528 80 696 564 24 18 4 631 628 70 10
11′ QIBR-010.25.630 732 528 80 696 564 24 18 4 631 629 70 10
12 QIBR-010.30.710 812 608 80 776 644 24 18 4 711 708 70 10
12′ QIBR-010.25.710 812 608 80 776 644 24 18 4 711 709 70 10
13 QIBR-010.40.800 922 678 100 878 722 30 22 6 801 798 90 10
13′ QIBR-010.30.800 922 678 100 878 722 30 22 6 801 798 90 10
14 QIBR-010.40.900 1022 778 100 978 822 30 22 6 901 898 90 10
14′ QIBR-010.30.900 1022 778 100 978 822 30 22 6 901 898 90 10
15 QIBR-010.40.1000 1122 878 100 1078 922 36 22 6 1001 998 90 10
15′ QIBR-010.30.1000 1122 878 100 1078 922 36 22 6 1001 998 90 10
16 QIBR-010.40.1120 1242 998 100 1198 1042 36 22 6 1121 1118 90 10
16′ QIBR-010.30.1120 1242 998 100 1198 1042 36 22 6 1121 1118 90 10
17 QIBR-010.45.1250 1390 1110 110 1337 1163 40 26 5 1252 1248 100 10
17′ QIBR-010.35.1250 1390 1110 110 1337 1163 40 26 5 1251 1248 100 10
18 QIBR-010.45.1400 1540 1260 110 1487 1313 40 26 5 1402 1398 100 10
18′ QIBR-010.35.1400 1540 1260 110 1487 1313 40 26 5 1401 1398 100 10
19 QIBR-010.45.1600 1740 1460 110 1687 1513 45 26 5 1602 1598 100 10
19′ QIBR-010.35.1600 1740 1460 110 1687 1513 45 26 5 1601 1598 100 10
20 QIBR-010.45.1800 1940 1660 110 1887 1713 45 26 5 1802 1798 100 10
20′ QIBR-010.35.1800 1940 1660 110 1887 1713 45 26 5 1801 1798 100 10
21 QIBR-010.60.2000 2178 1825 144 2110 1891 48 33 8 2002 1998 132 12
21′ QIBR-010.40.2000 2178 1825 144 2110 1891 48 33 8 2001 1998

The classification of non-standard three or four point angular contact ball bearings

QIBR are able to provide sealed three or four point angular contact ball bearings, three or four point angular contact ball bearings with snap grooves on the outer ring, etc. QIBR can make new design for customized bearings according to customer need, such as the bearings with irregular contact angle. As shown below.

Three or four point angular contact ball bearings are classified into general dust cap seals, non-contact rubber seals and contact rubber seals. Usually, the sealed bearings are filled with grease lubricant. The amount of grease is 25% to 40% of the effective space of the bearing. If there are special requirements, we can make corresponding adjustments.

Sealed four point angular contact ball bearing

Outer ring with snap groove four point 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 rollers G3, G5, G10, G16, G20, G24, G28, G40, G60, G100, G200
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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