Four-Point Contact Ball Bearing

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Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN / VDEh,DIN / VDEh

Inner ring diameter

30mm-200mm

Outer ring diameter

62mm-420mm

Weight

0.24kh-61.5kg

Material

GCr15

Brand

QIBR/OEM/Neutral

Package

QIBR/Standard Industrial Package/OEM

Applications

Machine Tool Spindle, Centrifuge, Booster Pump, Oil Pump, Blower, Various Gearboxes, Laboratory Equipment

Filters

NO. Product Product Number Basic dynamic load rating Basic static load rating Inner diameter (d) Mass Outer diameter (D) Width (B)
1 QJ206/ QJ206 31000 N 45000 N 30 mm 0.24 kg 62 mm 16 mm
2 QJ306/ QJ306 46000 N 63000 N 30 mm 0.42 kg 72 mm 19 mm
3 QJ207/ QJ207 41000 N 61500 N 35 mm 0.35 kg 72 mm 17 mm
4 QJ307/ QJ307 55000 N 80000 N 35 mm 0.57 kg 80 mm 21 mm
5 QJ208/ QJ208 49000 N 77500 N 40 mm 0.45 kg 80 mm 18 mm
6 QJ308/ QJ308 67000 N 100000 N 40 mm 0.78 kg 90 mm 23 mm
7 QJ209/ QJ209 55000 N 88500 N 45 mm 0.52 kg 85 mm 19 mm
8 QJ309/ QJ309 87500 N 133000 N 45 mm 1.05 kg 100 mm 25 mm
9 QJ210/ QJ210 57000 N 97000 N 50 mm 0.59 kg 90 mm 20 mm
10 QJ310/ QJ310 102000 N 159000 N 50 mm 1.35 kg 110 mm 27 mm
11 QJ211/ QJ211 71000 N 122000 N 55 mm 0.77 kg 100 mm 21 mm
12 QJ311/ QJ311 118000 N 187000 N 55 mm 1.75 kg 120 mm 29 mm
13 QJ212/ QJ212 85500 N 150000 N 60 mm 0.98 kg 110 mm 22 mm
14 QJ312/ QJ312 135000 N 217000 N 60 mm 2.15 kg 130 mm 31 mm
15 QJ213/ QJ213 97500 N 179000 N 65 mm 1.2 kg 120 mm 23 mm
16 QJ313/ QJ313 153000 N 250000 N 65 mm 2.7 kg 140 mm 33 mm
17 QJ214/ QJ214 106000 N 197000 N 70 mm 1.3 kg 125 mm 24 mm
18 QJ314/ QJ314 172000 N 285000 N 70 mm 3.18 kg 150 mm 30 mm
19 QJ215/ QJ215 110000 N 212000 N 75 mm 1.5 kg 130 mm 25 mm
20 QJ315/ QJ315 187000 N 320000 N 75 mm 3.9 kg 160 mm 37 mm
21 QJ1016/ QJ1016 77000 N 167000 N 80 mm 1.05 kg 125 mm 22 mm
22 QJ216/ QJ216 12400 N 236000 N 80 mm 1.85 kg 140 mm 26 mm
23 QJ316/ QJ316 20200 N 360000 N 80 mm 4.6 kg 170 mm 39 mm
24 QJ1017/ QJ1017 79000 N 176000 N 85 mm 1.1 kg 130 mm 22 mm
25 QJ217/ QJ217 143000 N 276000 N 85 mm 2.2 kg 150 mm 28 mm
26 QJ317/ QJ317 218000 N 405000 N 85 mm 5.34 kg 180 mm 41 mm
27 QJ1018/ QJ1018 94000 N 208000 N 90 mm 1.45 kg 140 mm 24 mm
28 QJ218/ QJ218 164000 N 320000 N 90 mm 2.75 kg 160 mm 30 mm
29 QJ318/ QJ318 235000 N 450000 N 90 mm 6.4 kg 190 mm 43 mm
30 QJ1019/ QJ1019 96500 N 220000 N 95 mm 1.5 kg 145 mm 24 mm
31 QJ219/ QJ219 177000 N 340000 N 95 mm 3.35 kg 170 mm 32 mm
32 QJ319/ QJ319 251000 N 495000 N 95 mm 7.4 kg 200 mm 45 mm
33 QJ1020/ QJ1020 98500 N 232000 N 100 mm 1.6 kg 150 mm 24 mm
34 QJ220/ QJ220 199000 N 390000 N 100 mm 4.0 kg 180 mm 34 mm
35 QJ320/ QJ320 300000 N 640000 N 100 mm 9.3 kg 210 mm 47 mm
36 QJ1021/ QJ1021 115000 N 269000 N 105 mm 2.0 kg 160 mm 26 mm
37 QJ221/ QJ221 217000 N 435000 N 105 mm 4.2 kg 190 mm 36 mm
38 QJ321/ QJ321 305000 N 640000 N 105 mm 10.5 kg 225 mm 49 mm
39 QJ1022/ QJ1022 139000 N 315000 N 110 mm 2.5 kg 170 mm 28 mm
40 QJ222/ QJ222 235000 N 490000 N 110 mm 5.6 kg 200 mm 38 mm
41 QJ322/ QJ322 320000 N 710000 N 110 mm 12.5 kg 240 mm 50 mm
42 QJ1024/ QJ1024 147000 N 350000 N 120 mm 2.65 kg 180 mm 28 mm
43 QJ224/ QJ224 265000 N 585000 N 120 mm 6.9 kg 215 mm 40 mm
44 QJ324/ QJ324 360000 N 835000 N 120 mm 15.4 kg 260 mm 55 mm
45 QJ1026/ QJ1026 169000 N 415000 N 130 mm 4.0 kg 200 mm 33 mm
46 QJ226/ QJ226 274000 N 635000 N 130 mm 7.7 kg 230 mm 40 mm
47 QJ326/ QJ326 400000 N 970000 N 130 mm 19 kg 280 mm 58 mm
48 QJ1028/ QJ1028 172000 N 435000 N 140 mm 4.3 kg 210 mm 33 mm
49 QJ228/ QJ228 239000 N 710000 N 140 mm 9.8 kg 250 mm 42 mm
50 QJ328/ QJ328 40000 N 1110000 N 140 mm 24 kg 300 mm 62 mm
51 QJ1030/ QJ1030 197000 N 505000 N 150 mm 5.2 kg 225 mm 35 mm
52 QJ230/ QJ230 315000 N 785000 N 150 mm 12 kg 270 mm 45 mm
53 QJ330/ QJ330 460000 N 1230000 N 150 mm 29 kg 320 mm 65 mm
54 QJ1032/ QJ1032 224000 N 580000 N 160 mm 6.4 kg 240 mm 38 mm
55 QJ232/ QJ232 380000 N 1010000 N 160 mm 15 kg 290 mm 48 mm
56 QJ332/ QJ332 505000 N 1400000 N 160 mm 31 kg 340 mm 68 mm
57 QJ1034/ QJ1034 268000 N 705000 N 170 mm 8.6 kg 260 mm 42 mm
58 QJ234/ QJ234 425000 N 1180000 N 170 mm 19.5 kg 310 mm 54 mm
59 QJ334/ QJ334 565000 N 1610000 N 170 mm 41 kg 360 mm 72 mm
60 QJ1036/ QJ1036 299000 N 830000 N 180 mm 11 kg 280 mm 46 mm
61 QJ236/ QJ236 44000 N 1270000 N 180 mm 20.5 kg 320 mm 52 mm
62 QJ336/ QJ336 595000 N 1770000 N 180 mm 48 kg 380 mm 75 mm
63 QJ1038/ QJ1038 325000 N 925000 N 190 mm 11.5 kg 290 mm 46 mm
64 QJ238/ QJ238 440000 N 129000 N 190 mm 23 kg 340 mm 55 mm
65 QJ338/ QJ338 655000 N 1980000 N 190 mm 54.5 kg 400 mm 78 mm
66 QJ1040/ QJ1040 345000 N 1020000 N 200 mm 15 kg 310 mm 51 mm
67 QJ240/ QJ240 490000 N 1480000 N 200 mm 27 kg 360 mm 58 mm
68 QJ340/ QJ340 690000 N 2180000 N 200 mm 61.5 kg 420 mm 80 mm

Characteristics and advantages of QIBR QJ series angular contact ball bearings

The QIBR QJ series angular contact ball bearings have multiple characteristics and advantages, which can solve key problems in various fields, mainly reflected in the following aspects;

1. QIBR QJ series angular contact ball bearings have the characteristic of high axial positioning accuracy

The QJ series angular contact ball bearings can provide very small axial positioning tolerances, meeting the high requirements for axial positioning accuracy in applications.

2. The QIBR QJ series angular contact ball bearings have the characteristic of optimized design structure

The QIBR QJ series angular contact ball bearing consists of an integral outer ring, two inner rings, a set of spheres, and an outer ring guide cage. The outer raceway adopts a Gothic arc design, and the inner raceway is divided into two halves for easy assembly.

3. The QIBR QJ series angular contact ball bearings have the characteristic of strong load-bearing capacity that can withstand bidirectional loads

The QJ series angular contact ball bearings can withstand both radial and bidirectional axial loads. In theory, each ball has four contact points with the bearing ring, which can evenly distribute the load.

4. QIBR QJ series angular contact ball bearings have the characteristic of saving axial space

The QIBR QJ series angular contact ball bearings can be regarded as a two in one combination of two single row angular contact ball bearings, with smaller axial dimensions than double row angular contact ball bearings. Suitable for situations with limited space, such as industrial gearboxes, locomotive drive systems, etc.

Performance improvement and solutions for QIBR QJ series angular contact ball bearings

1. Effectively improving material properties and enhancing load capacity

The QJ series angular contact ball bearings use high-quality steel to manufacture the inner and outer rings and ball bearings in production. The surface hardness and material properties are improved through processes such as vacuum heat treatment, enhancing the bearing's load capacity and service life. In addition, the QJ series angular contact ball bearings, due to their special structure, can accommodate more rolling elements, improving their load capacity. By improving the production process, reducing the ring thickness and outer diameter of the bearing, further reducing weight and enhancing load capacity.

For example, adopting thin-walled design can reduce material usage and improve economy while maintaining strength.

2. Optimize internal structural design

The QIBR QJ series angular contact ball bearing consists of an integral outer ring, two inner rings, a set of spheres, and an outer ring guide cage. The raceway design of its outer ring allows for independent definition of contact angle (usually 35 °) and axial clearance, which makes the bearing perform well in terms of load-bearing capacity and service life.

3. Improve manufacturing accuracy and load capacity

The production of QJ series angular contact ball bearings adopts advanced processing equipment and technology from abroad, such as precision grinding, ultra precision grinding, etc., to improve the geometric accuracy of the inner and outer rings and balls, reduce processing errors, and thus improve the rotational accuracy and operational stability of the bearings. In addition, compared with traditional single row angular contact ball bearings, QJ series angular contact ball bearings can provide higher load-bearing capacity in the same space, especially in applications that require bearing bidirectional axial loads, showing excellent performance.

4. Improve performance materials

The QJ series angular contact ball bearings are made of high-performance materials such as heat-resistant steel, which can significantly improve their operating temperature and service life, especially in high temperature and high-speed operating environments.

5. Personalization

Provide personalized structural dimension solutions for QJ series angular contact ball bearings to meet specific performance requirements for different occasions. This method not only enriches the standards of bearings, but also provides effective guidance for manufacturers to meet the personalized needs of users.

In short, by optimizing materials, internal structure, manufacturing accuracy, personalized design and other measures, the performance of QJ series angular contact ball bearings can be significantly improved to meet increasingly demanding application requirements.

The main application areas of QIBR QJ series angular contact ball bearings

The QJ series angular contact ball bearings are widely used in the following fields:

Gearbox

Due to its unique design, QJ bearings are capable of withstanding bi-directional axial loads within a limited space, making them highly suitable for use in industrial gearboxes.

Locomotive drive system

QJ bearings are widely used in locomotive drive systems due to their high precision and high stiffness.

Compressor

QJ bearings also have good applications in the field of compressors, which can meet the requirements of high precision and high stiffness in this field.

Robot

With the development of robot technology, the requirements for bearings are becoming increasingly high, requiring bearings to be small in size, light in weight, and have a long service life. The QJ series bearings have been optimized to significantly reduce size while ensuring load capacity, making them highly suitable for application in the field of robotics.

Rolling mill roll positioning

The QJ series four point angular contact ball bearings are highly suitable for roll positioning in rolling mills due to their ability to withstand radial and bi-directional axial loads, as well as their smaller size compared to double row angular contact ball bearings.

Overall, the QJ series angular contact ball bearings are widely used in gearboxes, locomotive drive systems, compressors, robots, and rolling mills due to their unique design and excellent performance.