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Series 39-Double Row Angular Contact Ball bearings OEM/ODM

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Series 39-Double Row Angular Contact Ball bearings

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  • 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
3905B
25
42
13
 0.3 -- 9.6 7.5 11000 12300 0.062
3905B.2RSR
25
42
13
 0.3 -- 9.6 7.5 11000 -- 0.062
3905B.2Z
25
42
13
 0.3 -- 9.6 7.5 11000 -- 0.062
3906B
30
47
13
 0.6 -- 9.9 8.3 9500 10500 0.095
3906B.2RSR
30
47
13
 0.6 -- 9.9 8.3 9500 -- 0.095
3906B.2Z
30
47
13
 0.6 -- 9.9 8.3 9500 -- 0.095
3907B
35
55
15
 0.6 -- 12.9 11.3 8000 9500 0.138
3907B.2RSR
35
55
15
 0.6 -- 12.9 11.3 8000 -- 0.138
3907B.2Z
35
55
15
 0.6 -- 12.9 11.3 8000 -- 0.138
3908B
40
62
16
 0.6 -- 17.4 15.8 6500 8000 0.158
3908B.2RSR
40
62
16
 0.6 -- 17.4 15.8 6500 -- 0.158
3908B.2Z
40
62
16
 0.6 -- 17.4 15.8 6500 -- 0.158
3909B
45
68
16
 0.6 -- 17.9 17.2 6000 6800 0.183
3909B.2RSR
45
68
16
 0.6 -- 17.9 17.2 6000 -- 0.183
3909B.2Z
45
68
16
 0.6 -- 17.9 17.2 6000 -- 0.183
3910B
50
72
16
 0.6 -- 19.1 19.6 5800 7200 0.189
3910B.2RSR
50
72
16
 0.6 -- 19.1 19.6 5800 -- 0.189
3910B.2Z
50
72
16
 0.6 -- 19.1 19.6 5800 -- 0.189
3910B.2RSR
50
80
23
 1 -- 42.3 41.9 5300 -- 0.395
3910B.2Z
50
80
23
 1 -- 42.3 41.9 5300 -- 0.395
3911B
55
80
19
 0.6 -- 20.0 21.7 5300 6200 0.282
3911B.2RSR
55
80
19
 0.6 -- 20.0 21.7 5300 -- 0.282
3911B.2Z
55
80
19
 0.6 -- 20.0 21.7 5300 -- 0.282
3912B
60
85
19
 0.6 -- 21.0 23.8 4800 5300 0.303
3912B.2RSR
60
85
19
 0.6 -- 21.0 23.8 4800 -- 0.303
3912B.2Z
60
85
19
 0.6 -- 21.0 23.8 4800 -- 0.303
3913B
65
90
19
 1 -- 21.4 24.8 4500 5000 0.324
3913B.2RSR
65
90
19
 1 -- 21.4 24.8 4500 -- 0.324
3913B.2Z
65
90
19
 1 -- 21.4 24.8 4500 -- 0.324
3914B
70
100
23
 1 -- 25.8 30.0 4000 4600 0.516
3914B.2RSR
70
100
23
 1 -- 25.8 30.0 4000 -- 0.516
3914B.2Z
70
100
23
 1 -- 25.8 30.0 4000 -- 0.516
3915B
75
105
23
 1 -- 26.0 31.3 3800 4300 0.546
3915B.2RSR
75
105
23
 1 -- 26.0 31.3 3800 -- 0.546
3915B.2Z
75
105
23
 1 -- 26.0 31.3 3800 -- 0.546
3916B
80
110
23
 1 -- 26.7 32.5 3500 4000 0.576
3916B.2RSR
80
110
23
 1 -- 26.7 32.5 3500 -- 0.576
3916.2Z
80
110
23
 1 -- 26.7 32.5 3500 -- 0.576
3917B
85
120
26
 1.1 -- 31.5 38.5 3300 3700 0.821
3917B.2RSR
85
120
26
 1.1 -- 31.5 38.5 3300 -- 0.821
3917B.2Z
85
120
26
 1.1 -- 31.5 38.5 3300 -- 0.821
3918B
90
125
26
 1.1 -- 32.1 40.1 3100 3400 0.861
3918B.2RSR
90
125
26
 1.1 -- 32.1 40.1 3100 -- 0.861
3918B.2Z
90
125
26
 1.1 -- 32.1 40.1 3100 -- 0.861
3919B
95
130
26
 1.1 -- 32.6 41.7 3000 3300 0.901
3919B.2RSR
95
130
26
 1.1 -- 32.6 41.7 3000 -- 0.901
3919B.2Z
95
130
26
 1.1 -- 32.6 41.7 3000 -- 0.901
3920B
100
140
30
 1.1 -- 37.9 48.5 2800 -- 1.270
3920B.2RSR
100
140
30
 1.1 -- 37.9 48.5 2800 3200 1.270
3920B.2Z
100
140
30
 1.1 -- 37.9 48.5 2800 -- 1.270

Ningbo DHK Precision Bearing Co., Ltd.

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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 39-Double Row Angular Contact Ball bearings Factory and OEM/ODM Series 39-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.

  • 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. Design and Construction of Series 39 double row angular contact ball bearings
Series 39 double row angular contact ball bearings are meticulously crafted to meet the stringent requirements of modern industrial applications. The design and construction of these bearings are characterized by precision engineering and innovative features that set them apart in the realm of bearing technology. These bearings are distinguished by their unique configuration, featuring two-half inner rings. This design allows for optimized load distribution and enhanced axial support, ensuring smooth and efficient operation even under the most demanding conditions. By evenly distributing loads across the bearing surfaces, Series 39 bearings minimize stress concentrations and reduce the risk of premature wear and failure, thereby enhancing overall durability and reliability. The contact angle of 45 degrees plays a crucial role in the performance of Series 39 double row angular contact ball bearings. This specific angle facilitates optimal load-carrying capacity while minimizing frictional resistance during rotation. As a result, these bearings exhibit superior efficiency and energy savings, making them ideal for applications where performance and reliability are paramount.

2. Optimal Contact Geometry
The contact geometry of Series 39 double row angular contact ball bearings is carefully engineered to maximize performance and longevity. With a contact angle of 45 degrees, these bearings ensure uniform load distribution across the bearing races, effectively reducing stress concentrations and extending service life. This optimal contact geometry is essential for maintaining operational efficiency and reliability in various industrial applications. By minimizing localized pressure points, Series 39 bearings mitigate the risk of premature fatigue and wear, thereby enhancing overall durability and reducing the need for frequent maintenance and replacement. The precise alignment of the bearing races and balls further contributes to the efficiency of Series 39 bearings. This meticulous craftsmanship ensures smooth and consistent rotation, minimizing frictional losses and maximizing energy transmission. As a result, Series 39 double row angular contact ball bearings offer superior performance and reliability, making them the preferred choice for critical applications where precision and durability are non-negotiable.