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Series 38-Double Row Angular Contact Ball bearings OEM/ODM

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Series 38-Double Row Angular Contact Ball bearings

  • Open
  • With dust cover
  • With sealing ring
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  • Design Variants
  • 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
3805B
25
37
10
 0.3 15.9 5.5 4.9 11500 12700 0.025
3805B.2RSR
25
37
10
 0.3 15.9 5.5 4.9 11500 -- 0.025
3805B.2Z
25
37
10
 0.3 15.9 5.5 4.9 11500 -- 0.025
3806B
30
42
10
 0.3 -- 5.7 5.6 10000 11500 0.030
3806B.2RSR
30
42
10
 0.3 -- 5.7 5.6 10000 -- 0.030
3806B.2Z
30
42
10
 0.3 -- 5.7 5.6 10000 -- 0.030
3807B
35
47
10
 0.3 20 6.1 6.2 8500 1000 0.035
3807B.2RSR
35
47
10
 0.3 20 6.1 6.2 8500 -- 0.035
3807B.2Z
35
47
10
 0.3 20 6.1 6.2 8500 -- 0.035
3808B
40
52
10
 0.3 22.4 6.4 6.9 7000 8500 0.040
3808B.2RSR
40
52
10
 0.3 22.4 6.4 6.9 7000 -- 0.040
3808B.2Z
40
52
10
 0.3 22.4 6.4 6.9 7000 -- 0.040
3809B
45
58
10
 0.3 24.2 6.7 7.7 6300 7000 0.055
3809B.2RSR
45
58
10
 0.3 24.2 6.7 7.7 6300 -- 0.055
3809B.2Z
45
58
10
 0.3 24.2 6.7 7.7 6300 -- 0.055
3810B
50
65
12
 0.3 27.1 7.0 8.4 6000 7500 0.075
3810B.2RSR
50
65
12
 0.3 27.1 7.0 8.4 6000 -- 0.075
3810B.2Z
50
65
12
 0.3 27.1 7.0 8.4 6000 -- 0.075
3811B
55
72
13
 0.3 30.7 12.8 14.4 5500 6500 0.010
3811B.2RSR
55
72
13
 0.3 30.7 12.8 14.4 5500 -- 0.010
3811B.2Z
55
72
13
 0.3 30.7 12.8 14.4 5500 -- 0.010
3812B
60
78
14
 0.3 33.2 13.6 16.2 5000 5500 0.140
3812B.2RSR
60
78
14
 0.3 33.2 13.6 16.2 5000 -- 0.140
3812B.2Z
60
78
14
 0.3 33.2 13.6 16.2 5000 -- 0.140
3813B
65
85
15
 0.6 -- 15.1 18.3 4700 5200 0.182
3813B.2RSR
65
85
15
 0.6 -- 15.1 18.3 4700 -- 0.182
3813B.2Z
65
85
15
 0.6 -- 15.1 18.3 4700 -- 0.182
3814B
70
90
15
 0.6 -- 18.0 21.9 4400 4800 0.190
3814B.2RSR
70
90
15
 0.6 -- 18.0 21.9 4400 -- 0.190
3814B.2Z
70
90
15
 0.6 -- 18.0 21.9 4400 -- 0.190
3815B
75
95
15
 0.6 -- 16.0 20.3 4200 4700 0.224
3815B.2RSR
75
95
15
 0.6 -- 16.0 20.3 4200 -- 0.224
3815B.2Z
75
95
15
 0.6 -- 16.0 20.3 4200 -- 0.224
3816B
80
100
15
 0.6 -- 16.5 21.7 4000 4400 0.230
3816B.2RSR
80
100
15
 0.6 -- 16.5 21.7 4000 -- 0.230
3816B.2Z
80
100
15
 0.6 -- 16.5 21.7 4000 -- 0.230
3817B
85
110
19
 1 -- 22.0 28.7 3600 4000 0.407
3817B.2RSR
85
110
19
 1 -- 22.0 28.7 3600 -- 0.407
3817B.2Z
85
110
19
 1 -- 22.0 28.7 3600 -- 0.407
3818B
90
115
19
 1 55 23.3 30.8 3300 3600 0.450
3818B.2RSR
90
115
19
 1 55 23.3 30.8 3300 -- 0.450
3818.2Z
90
115
19
 1 55 23.3 30.8 3300 -- 0.450
3819B
95
120
19
 1 -- 23.6 31.8 3200 3500 0.501
3819B.2RSR
95
120
19
 1 -- 23.6 31.8 3200 -- 0.501
3819B.2Z
95
120
19
 1 -- 23.6 31.8 3200 -- 0.501
3820B.2RSR
100
125
19
 1 -- 23.7 32.8 3100 3400 0.560
3820B.2Z
100
125
19
 1 -- 23.7 32.8 3100 -- 0.560

Ningbo DHK Precision Bearing Co., Ltd.

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    Years Experience Working

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    Customer Service

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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 38-Double Row Angular Contact Ball bearings Factory and OEM/ODM Series 38-Double 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.

  • Honor
  • Honor
  • Environmental Managementsystem Certificate
  • Measurement Management System
  • Invention patent1
  • Invention patent2
  • Invention patent3
  • High-tech enterprises

Latest News

Industry Knowledge Expansion

1. Versatility in Design
Series 38 Double Row Angular Contact Ball Bearings epitomize versatility in design, offering a spectrum of configurations to meet diverse application requirements. The open design bearings in the Series 38 lineup provide unrestricted access to the ball raceways, facilitating efficient lubrication and heat dissipation. This design is particularly advantageous in applications where debris accumulation is minimal, allowing for simplified maintenance procedures and extended service intervals. The absence of seals or shields reduces frictional losses, contributing to higher operational efficiency and reduced power consumption. For applications operating in harsh or contaminated environments, Series 38 bearings offer sealed and shielded options to enhance protection against external elements. Sealed bearings feature integrated seals that form a barrier between the internal components and external contaminants, safeguarding the bearing against ingress of dust, moisture, and other particulate matter. On the other hand, shielded bearings utilize metal shields to provide a physical barrier against debris while maintaining lubricant integrity and minimizing frictional resistance. In addition to these primary design variations, Series 38 bearings may also incorporate grooves in their outer rings to accommodate shields or seals. These grooves serve as precise locating features, ensuring proper alignment and retention of the sealing elements during installation.

2. Application Considerations
The versatility and performance characteristics of Series 38 Double Row Angular Contact Ball Bearings make them indispensable components in a wide array of industrial applications. From precision machine tools to heavy-duty machinery, these bearings excel in environments where demanding operating conditions and stringent performance requirements are the norm. In machine tools such as CNC machining centers and grinding machines, Series 38 bearings play a critical role in facilitating high-speed spindle rotation while maintaining precise positioning and accuracy. Their ability to accommodate both radial and axial loads ensures stable spindle operation, resulting in superior surface finish and dimensional accuracy in machined components. Conveyors and material handling equipment also benefit from the use of Series 38 bearings, where their robust construction and enhanced load capacity enable reliable performance under continuous operation and varying load conditions. Whether conveying bulk materials in mining operations or sorting packages in logistics facilities, these bearings provide the durability and reliability necessary to keep operations running smoothly. Series 38 bearings find application in pumps and gearboxes, where they contribute to efficient power transmission and fluid handling. Their ability to withstand axial thrust loads makes them well-suited for use in pump applications, while their precise angular contact geometry ensures minimal backlash and smooth operation in gearbox assemblies.