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Series 73-Single Row Angular Contact Ball Bearings OEM/ODM

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Series 73-Single Row Angular Contact Ball Bearings

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  • Design Variants
  • Misalignment
  • Cage
  • Tolerance
  • Internal clearance
Model
 Dimensions Rated load C5(um) Extreme speed Weight
d
D
B
 r1,r2 Min r3,r4 Min Dynamic load Cr Static load Cor Grease lubrication Oil lubrication
7304B
20
52
15
 1.1 0.6 19 10.4 12000 17000 0.15
7305C
25
62
17
 1.1 0.6 29.9 17.2 9500 14000 0.23
7305AC
25
62
17
 1.1 0.6 28.9 16.7 9500 14000 0.23
7305B
25
62
17
 1.1 0.6 26 15 9500 14000 0.23
7306C
30
72
19
 1.1 0.6 35.9 22.3 8500 12000 0.35
7306AC
30
72
19
 1.1 0.6 34.6 21.4 8500 12000 0.35
7306B
30
72
19
 1.1 0.6 32.5 20 8000 11000 0.35
7307C
35
80
21
 1.5 0.6 44.1 28 7500 10000 0.47
7307AC
35
80
21
 1.5 0.6 42.5 27 7500 10000 0.47
7307B
35
80
21
 1.5 1 39 25 7000 9500 0.46
7308C
40
90
23
 1.5 0.6 53.8 35 6700 9000 0.673
7308AC
40
90
23
 1.5 0.6 51.8 33.8 6700 9000 0.629
7308B
40
90
23
 1.5 1 50 32.5 6300 8500 0.63
7309C
45
100
25
 1.5 0.6 66.8 45.8 6000 8000 0.86
7309AC
45
100
25
 1.5 0.6 66.4 44 6000 8000 0.86
7309B
45
100
25
 1.5 1 60 40 5600 7500 0.84
7310C
50
110
27
 2 1 79.5 55.9 7000 8700 1.08
7310AC
50
110
27
 2 1 76.5 53.8 5600 7500 1.32
7310B
50
110
27
 2 1 69.5 47.5 5300 7000 1.1
7311C
55
120
29
 2 1 91.8 65.6 7000 8700 1.71
7311AC
55
120
29
 2 1 88.3 63.2 5000 6700 1.42
7311B
55
120
29
 2 1 78 56 4800 6300 1.4
7312C
60
130
31
 2.1 1.1 105 76.3 4800 6300 1.7
7312AC
60
130
31
 2.1 1.1 101 73.4 4800 6300 2.06
7312B
60
130
31
 2.1 1.1 90 65.5 4300 5600 1.8
7313C
65
140
33
 2.1 1.1 121 88.9 4300 5600 2.23
7313AC
65
140
33
 2.1 1.1 116 85.5 4300 5600 2.23
7313B
65
140
33
 2.1 1.1 102 75 4000 5300 2.2
7314C
70
150
35
 2.1 1.1 134 100 4000 5300 2.67
7314AC
70
150
35
 2.1 1.1 129 96.3 4000 5300 3.06
7314B
70
150
25
 2.1 1.1 114 86.5 3800 5000 2.7
7315C
75
160
37
 2.1 1.1 145 113 3800 5000 3.56
7315AC
75
160
37
 2.1 1.1 139 109 3800 5000 3.56
7315B
75
160
37
 2.1 1.1 127 100 3400 4500 3.2
7316C
80
170
39
 2.1 1.1 158 128 3600 4800 3.59
7316AC
80
170
39
 2.1 1.1 152 122 3600 4800 3.59
7316B
80
170
39
 2.1 1.1 140 114 3200 4300 4.3
7317C
85
180
41
 3 1.1 172 141 3400 4500 4.38
7317AC
85
180
41
 3 1.1 165 137 3400 4500 4.38
7317B
85
180
41
 3 1.1 150 127 3000 4000 4.6
7318C
90
190
43
 3 1.1 185 160 3200 4300 4.87
7318AC
90
190
43
 3 1.1 178 154 3200 4300 5.06
7318B
90
190
43
 3 1.1 160 140 2800 3800 5.3
7319C
95
200
45
 3 1.1 201 180 3000 4000 5.98
7319AC
95
200
45
 3 1.1 193 173 3000 4000 5.98
7319B
95
200
45
 3 1.1 173 153 2800 3800 6.2
7320C
100
215
47
 3 1.1 222 207 2600 3600 7.2
7320AC
100
215
47
 3 1.1 164 199 2600 3600 9.61
7320B
100
215
47
 3 1.1 146 178 2600 3600 8.41
7321BM
105
225
49
 3 1.1 208 200 2400 3400 9.5
7322ACM
110
240
50
 3 1.1 184 231 2200 3200 9.97
7322BM
110
240
50
 3 1.1 164 212 2200 3200 11.5
7324CM
120
260
55
 3 1.1 279 288 2200 3200 14.8
7324BM
120
260
55
 3 1.1 193 262 1900 2800 14.6
7324ACM
120
260
55
 3 1.1 204 269 1900 2800 14.1
7326BM
130
280
58
 4 1.5 251 270 1800 2600 17.5
7328BM
140
300
62
 4 1.5 212 310 1700 2400 21.6
7330BM
150
320
65
 4 1.5 289 340 1600 2200 26.7
7330ACM
150
320
65
 4 1.5 315 370 1600 2200 26.0
7332BM
160
340
68
 4 1.5 315 385 1400 2000 30.8
7336BM
180
380
75
 4 1.5 375 490 1300 1800 42.6
7338BM
190
400
78
 5 2 410 550 1200 1700 47.2
7340BM
200
420
80
 5 2 430 600 1100 1600 55.3
7344BM
220
460
88
 5 2 450 665 1000 1500 72.9
7348BM
240
500
95
 5 2 475 670 900 1300 88.5

Ningbo DHK Precision Bearing Co., Ltd.

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    Patented Technology

Ningbo DHK Precision Bearing Co., Ltd. (“DHK” for short) is a specialist enterprise engaged in the R&D, manufacture and sales of bearings. Is a famous China Series 73-Single Row Angular Contact Ball Bearings Factory and OEM/ODM Series 73-Single Row Angular Contact Ball Bearings Company. And is located in Ningbo Zhenhai Economic Development Zone with convenient transportation. Since the establishment for over a decade, "technology", "quality" and "service" have always been the initial issues in our mind for the sake of development. We provide reliable products and special customized services for global enterprises in heavy industry and have got the Satisfaction and won good reputation of a number of enterprises at home and abroad.

DHK mainly produces cylindrical roller bearings, conical roller bearings, self-aligning roller bearings, ball bearings, as well as various kinds of non-standard bearings and bearings with specially treated surface. So far, DHK’s bearings have been widely applied in such fields as engineering machinery, industrial pump, machine tool, compression engine, gear case, wind power and metallurgy in developed European and American countries.

DHK has the measuring room and inspection room of bearings in the industry and has introduced top-end inspection equipment worldwide and established the QC system in China,thus guaranteeing product quality in an all-round way.

Ningbo DHK Precision Bearing Co., Ltd.

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CERTIFICATE

DHK has passed IATF16949 quality system certification and ISO14001 environmental management system certification；and DHK is a national high-tech enterprise.

  • Certificate
  • Environmental Managementsystem Certificate
  • Occupational Health And Safetymanagement System Certificate
  • Measurement Management System
  • Invention patent1
  • Invention patent2
  • Invention patent3
  • High-tech enterprises

Latest News

Industry Knowledge Expansion

1. Understanding Series 73 Bearings: Construction and Features
At the core of Series 73 bearings is a single row of precision-machined balls, typically made from high-grade steel or ceramic materials, arranged at an angle relative to the bearing axis. This angular contact design enables the bearings to accommodate both radial and axial loads simultaneously, a key feature distinguishing them from other types of bearings. The contact angle of Series 73 bearings is typically set at 30 degrees, although variations exist depending on specific application requirements. This angle determines the distribution of load between the balls and raceways, ensuring uniform stress distribution and minimizing the risk of premature wear or fatigue failure. The contact angle influences the axial stiffness of the bearing assembly, allowing for precise control over shaft deflection and positioning accuracy. Another critical aspect of Series 73 bearings is their cage design. The cage, typically made from reinforced engineering plastics or stamped steel, serves to retain and evenly space the balls within the bearing assembly. By minimizing friction and preventing ball-to-ball contact, the cage contributes to smoother operation, reduced noise levels, and extended bearing service life. Series 73 bearings are available in various configurations to suit different application requirements. These configurations may include open bearings for easy lubrication access, sealed bearings for enhanced contamination resistance, or shielded bearings for moderate protection against debris ingress. Customized variants with special coatings or surface treatments are available to address specific operating conditions, such as high temperatures or corrosive environments. The precision manufacturing processes employed in the production of Series 73 bearings ensure tight tolerances and consistent quality across each component. Advanced machining techniques, such as grinding and honing, are utilized to achieve smooth and precise raceway surfaces, minimizing friction and optimizing load distribution.

2. Advantages of Series 73 Bearings
Series 73-Single Row Angular Contact Ball Bearings offer a multitude of advantages, making them a preferred choice for engineers and designers across various industries. These advantages stem from the unique design and performance characteristics inherent in Series 73 bearings, which enable them to excel in demanding operating conditions. a)Versatility in Load Handling: One of the primary advantages of Series 73 bearings is their ability to accommodate both radial and axial loads simultaneously. The angular contact design, with its precisely engineered contact angle, enables efficient load distribution across the bearing assembly. This versatility allows Series 73 bearings to excel in applications where dynamic loads, varying speeds, and complex loading conditions are common, such as machine tool spindles, automotive transmissions, and industrial gearboxes. b)High-Speed Capability: Series 73 bearings are engineered for high-speed operation, thanks to their optimized design and precise manufacturing tolerances. The angular contact arrangement minimizes friction and heat generation, allowing for smooth rotation at elevated speeds without compromising performance or reliability. This capability is particularly advantageous in applications requiring rapid rotational motion, such as electric motors, centrifugal pumps, and aerospace systems. c)Reduced Friction and Heat Generation: The angular contact configuration of Series 73 bearings facilitates efficient load distribution, resulting in reduced friction between the balls and raceways. This reduction in friction not only minimizes energy consumption but also helps mitigate heat buildup within the bearing assembly. As a result, Series 73 bearings offer improved operational efficiency, lower operating temperatures, and extended lubricant life, contributing to overall equipment reliability and energy savings.