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Series 33-Double Row Angular Contact Ball bearings OEM/ODM

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Series 33-Double Row Angular Contact Ball bearings

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  • 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
3302B
15
42
19
 1 22 16.3 10 10000 15000 0.13
3303B
17
47
22.2
 1 24 20.8 12.5 9500 14000 0.2
3303B.2RS
17
47
22.2
 1 24 20.8 12.5 6300 -- 0.2
3303B.2Z
17
47
22.2
 1 24 20.8 12.5 9500 -- 0.2
3304B
20
52
22.2
 1.1 26 23.2 15 8500 12000 0.2
3304B.2RS
20
52
22.2
 1.1 26 23.2 15 5500 -- 0.2
3304B.2Z
20
52
22.2
 1.1 26 23.2 15 8500 -- 0.2
3305B
25
62
25.4
 1.1 31 30 20 7500 10000 0.4
3305B.2RSR
25
62
25.4
 1.1 31 30 20 5000 -- 0.4
3305B.2Z
25
62
25.4
 1.1 31 30 20 7500 -- 0.4
3305DA
25
62
25.4
 1.1 56 30 23.2 -- 10000 0.357
3306B
30
72
30.2
 1.1 36 41.5 28.5. 6300 8500 0.6
3306B.2RSR
30
72
30.2
 1.1 36 41.5 28.5 4200 -- 0.6
3306B.2Z
30
72
30.2
 1.1 36 41.5 28.5 6300 -- 0.6
3306DA
30
72
30.2
 1.1 67 41.5 34.5 -- 8500 0.695
3307B
35
80
34.9
 1.5 41 51 34.5 5600 7500 0.8
3307B.2RSR
35
80
34.9
 1.5 41 51 34.5 3700 -- 0.8
3307B.2Z
35
80
34.9
 1.5 41 51 34.5 5600 -- 0.8
3307DA
35
80
34.9
 1.5 75 50 41.5 -- 7500 0.871
3308B
40
90
36.5
 1.5 46 62 45 5000 6700 1.0
3308B.2RSR
40
90
36.5
 1.5 46 62 45 3300 -- 1.0
3308B.2Z
40
90
36.5
 1.5 46 62 45 5000 -- 1.0
3308DA.MA
40
90
36.5
 1.5 85 62 53 6300 1.09
3309B
45
100
39.7
 1.5 50 68 51 4500 7500 1.4
3309B.2RSR
45
100
39.7
 1.5 50 68 51 3000 -- 1.4
3309B.2Z
45
100
39.7
 1.5 50 68 51 4500 -- 1.4
3309DA
45
100
39.7
 1.5 93 75 64 -- 6000 1.46
3310B
50
110
44.4
 2 55 81.5 62 4000 5300 2.0
3310B.2RSR
50
110
44.4
 2 55 81.5 62 4000 -- 2.0
3310B.2Z
50
110
44.4
 2 55 81.5 62 4000 -- 2.0
3310DA.MA
50
110
44.4
 2 104 90 85 5300 5300 2.2
3311B
55
120
49.2
 2 61 102 78 3800 5000 2.6
3311B.2RSR
55
120
49.2
 2 61 102 78 2500 -- 2.6
3311B.2Z
55
120
49.2
 2 61 102 78 3800 -- 2.6
3311DA.MA
55
120
49.2
 2 111 110 100 -- 5000 2.93
3312B
60
130
54.0
 2.1 67 125 98 3400 4500 3.3
3312B.2RSR
60
130
54.0
 2.1 67 125 98 2300 -- 3.3
3312B.2Z
60
130
54.0
 2.1 67 125 98 3400 -- 3.3
3312DA.MA
60
130
54.0
 2.1 122 127 118 -- 4500 3.28
3313B
65
140
58.7
 2.1 71 150 118 3200 4300 4.1
3313B.2RSR
65
140
58.7
 2.1 71 150 118 2100 -- 4.1
3313B.2Z
65
140
58.7
 2.1 71 150 118 3200 -- 4.1
3313DA.MA
65
140
58.7
 2.1 131 143 137 -- 4300 4.25
3314B
70
150
63.5
 2.1 109 154.5 125.1 2800 3800 4.7
3314B.2RSR
70
150
63.5
 2.1 109 154.5 125.1 2800 -- 4.7
3314B.2Z
70
150
63.5
 2.1 109 154.5 125.1 2800 -- 4.7
3314DA
70
150
63.5
 2.1 141 163 156 -- 4000 5.24
3315B
75
160
68.3
 2.1 117 163 193 2600 3600 6.2
3315B.2RSR
75
160
68.3
 2.1 117 171.4 134.8 2600 -- 6.300
3315B.2Z
75
160
68.3
 2.1 117 171.4 134.8 2600 -- 6.300
3316
80
170
68.3
 2.1 123 176 212 2400 3400 7.0
3316B.2RSR
80
170
68.3
 2.1 123 190.1 151.7 2400 -- 7.210
3316B.2Z
80
170
68.3
 2.1 123 190.1 151.7 2400 -- 7.210
3317
85
180
73.0
 3 131 190 228 2200 3200 8.300
3317B.2RSR
85
180
73.0
 3 131 189.4 234.5 2200 -- 8.300
3317B.2Z
85
180
73.0
 3 131 189.4 234.5 2200 -- 8.300
3318
90
190
73.0
 3 136 216 275 2000 3000 9.300
3318B.2RSR
90
190
73.0
 3 136 230.6 193.3 2000 -- 9.230
3318B.2Z
90
190
73.0
 3 136 230.6 193.3 2000 -- 9.230
3319
95
200
77.8
 3 143 220 285 1900 2800 11.1
3320
100
215
82.6
 3 153 240 320 1800 2600 13.5
3322
110
240
92.1
 3 171 280 400 1700 2400 19.0

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 33-Double Row Angular Contact Ball bearings Factory and OEM/ODM Series 33-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. DHK Double Row Angular Contact Ball Bearings: B Design
Within the Series 33 family, the DHK Double Row Angular Contact Ball Bearings of B design emerge as a cornerstone of precision engineering. These bearings encapsulate a meticulous blend of design intricacies and material resilience, rendering them indispensable in a myriad of industrial applications. Their distinctive B design encompasses a range of features geared towards optimizing performance and reliability, making them a preferred choice among engineers and manufacturers alike. The DHK Double Row Angular Contact Ball Bearings of B design are engineered to withstand formidable radial and axial loads with unparalleled efficiency. This design configuration ensures optimal load distribution across the bearing surfaces, mitigating stress concentrations and promoting smooth, reliable operation under diverse operating conditions. Whether subjected to heavy machinery vibrations or fluctuating loads, these bearings exhibit remarkable resilience, contributing to overall system longevity and performance consistency. Available with shields or seals on both sides, DHK B design bearings offer enhanced protection against contaminants, a crucial consideration in industrial environments where dust, dirt, and moisture pose significant challenges. The shields act as barriers, preventing ingress of foreign particles and safeguarding the internal components from abrasion and corrosion. Alternatively, sealed bearings provide an additional layer of defense, effectively sealing off the bearing cavity and preserving lubricant integrity for prolonged service intervals.

2. Performance Factors
Optimizing the performance of DHK Double Row Angular Contact Ball Bearings of B design necessitates meticulous attention to various operational factors. Among these, preload stands out as a critical parameter that influences bearing stiffness and contact angle under load. By applying the appropriate preload, engineers can ensure optimal load distribution across the bearing surfaces, minimizing the risk of premature wear and fatigue. Clearance plays a pivotal role in determining the thermal and mechanical behavior of the bearings during operation. Adequate clearance allows for thermal expansion and contraction, preventing excessive heat buildup and potential interference between bearing components. Through precise control of clearance, engineers can achieve optimal operating conditions, thereby maximizing bearing service life and performance efficiency. Lubrication constitutes another fundamental aspect of bearing performance, influencing frictional characteristics, wear resistance, and temperature management. Selecting the right lubricant and lubrication method is crucial for maintaining optimal operating conditions and minimizing energy losses. Whether employing grease or oil lubrication, ensuring proper replenishment intervals and contamination control is essential for preserving bearing integrity and operational reliability over time.