Double row Cylindrical Roller Bearing

Image may differ from product. See technical specification for details.

Standard

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

Material

52100、100Cr6、SUJ2

Inner diameter (d)

25-440mm

Outer diameter (D)

40-1100mm

Mass

0.1-600kg

Brand

QIBR/OEM/Neutral

Package

QIBR/Standard Industrial Package/OEM

Applications

Spinspindle of large motors,Machine tool spindle

Double row Cylindrical Roller Bearing

Filters

NO. Product Product Number Inner diameter (d) Outer diameter (D) Radial dynamic load Static load rating,radial Weight Width (B)
1 NN3005MBKR/ NN3005MBKR 25 mm 47 mm 25.8 KN 30.0 KN 0.121 kg 16 mm
2 NN3005MB/ NN3005MB 25 mm 47 mm 25.8 KN 30.0 KN 0.121 kg 16 mm
3 NN3006MBKR/ NN3006MBKR 30 mm 55 mm 31.0 KN 37.0 KN 0.186 kg 19 mm
4 NN3006MB/ NN3006MB 30 mm 55 mm 31.0 KN 37.0 KN 0.186 kg 19 mm
5 NN3006TBKR/ NN3006TBKR 30 mm 55 mm 31.0 KN 37.0 KN 0.171 kg 19 mm
6 NN3006TB/ NN3006TB 30 mm 55 mm 31.0 KN 37.0 KN 0.171 kg 19 mm
7 NN3006ZTBKR/ NN3006ZTBKR 30 mm 55 mm 18.3 KN 18.6 KN 0.152 kg 19 mm
8 NN3006ZTB/ NN3006ZTB 30 mm 55 mm 18.3 KN 18.6 KN 0.152 kg 19 mm
9 NN3007MBKR/ NN3007MBKR 35 mm 62 mm 39.5 KN 50.0 KN 0.297 kg 20 mm
10 NN3007MB/ NN3007MB 35 mm 62 mm 39.5 KN 50.0 KN 0.297 kg 20 mm
11 NN3007TBKR/ NN3007TBKR 35 mm 62 mm 39.5 KN 50.0 KN 0.227 kg 20 mm
12 NN3007TB/ NN3007TB 35 mm 62 mm 39.5 KN 50.0 KN 0.227 kg 20 mm
13 NN3007ZTBKR/ NN3007ZTBKR 35 mm 62 mm 23.3 KN 25.0 KN 0.198 kg 20 mm
14 NN3007ZTB/ NN3007ZTB 35 mm 62 mm 23.3 KN 25.0 KN 0.198 kg 20 mm
15 NN3008MBKR/ NN3008MBKR 40 mm 68 mm 50.0 KN 55.5 KN 0.356 kg 21 mm
16 NN3008MB/ NN3008MB 40 mm 68 mm 50.0 KN 55.5 KN 0.356 kg 21 mm
17 NN3008TBKR/ NN3008TBKR 40 mm 68 mm 50.0 KN 55.5 KN 0.269 kg 21 mm
18 NN3008TB/ NN3008TB 40 mm 68 mm 50.0 KN 55.5 KN 0.269 kg 21 mm
19 NN3008ZTBKR/ NN3008ZTBKR 40 mm 68 mm 29.6 KN 27.7 KN 0.234 kg 21 mm
20 NN3008ZTB/ NN3008ZTB 40 mm 68 mm 29.6 KN 27.7 KN 0.234 kg 21 mm
21 NN3009MBKR/ NN3009MBKR 45 mm 75 mm 59.5 KN 68.5 KN 0.471 kg 23 mm
22 NN3009MB/ NN3009MB 45 mm 75 mm 59.5 KN 68.5 KN 0.471 kg 23 mm
23 NN3009TBKR/ NN3009TBKR 45 mm 75 mm 57.5 KN 65.5 KN 0.348 kg 23 mm
24 NN3009TB/ NN3009TB 45 mm 75 mm 57.5 KN 65.5 KN 0.348 kg 23 mm
25 NN3009ZTBKR/ NN3009ZTBKR 45 mm 75 mm 34.0 KN 32.5 KN 0.302 kg 23 mm
26 NN3009ZTB/ NN3009ZTB 45 mm 75 mm 34.0 KN 32.5 KN 0.302 kg 23 mm
27 NN3010MBKR/ NN3010MBKR 50 mm 80 mm 61.0 KN 72.5 KN 0.502 kg 23 mm
28 NN3010MB/ NN3010MB 50 mm 80 mm 61.0 KN 72.5 KN 0.502 kg 23 mm
29 NN3010TBKR/ NN3010TBKR 50 mm 80 mm 61.0 KN 72.5 KN 0.378 kg 23 mm
30 NN3010TB/ NN3010TB 50 mm 80 mm 61.0 KN 72.5 KN 0.378 kg 23 mm
31 NN3010ZTBKR/ NN3010ZTBKR 50 mm 80 mm 36.5 KN 36.5 KN 0.328 kg 23 mm
32 NN3010ZTB/ NN3010ZTB 50 mm 80 mm 36.5 KN 36.5 KN 0.328 kg 23 mm
33 NN3011MBKR/ NN3011MBKR 55 mm 90 mm 79.5 KN 96.5 KN 0.748 kg 26 mm
34 NN3011MB/ NN3011MB 55 mm 90 mm 79.5 KN 96.5 KN 0.748 kg 26 mm
35 NN3011TBKR/ NN3011TBKR 55 mm 90 mm 79.5 KN 96.5 KN 0.562 kg 26 mm
36 NN3011TB/ NN3011TB 55 mm 90 mm 79.5 KN 96.5 KN 0.562 kg 26 mm
37 NN3011ZTBKR/ NN3011ZTBKR 55 mm 90 mm 47.5 KN 48.5 KN 0.488 kg 26 mm
38 NN3011ZTB/ NN3011ZTB 55 mm 90 mm 47.5 KN 48.5 KN 0.488 kg 26 mm
39 NN3012MBKR/ NN3012MBKR 60 mm 95 mm 84.5 KN 106 KN 0.804 kg 26 mm
40 NN3012MB/ NN3012MB 60 mm 95 mm 84.5 KN 106 KN 0.804 kg 26 mm
41 NN3012TBKR/ NN3012TBKR 60 mm 95 mm 84.5 KN 106 KN 0.602 kg 26 mm
42 NN3012TB/ NN3012TB 60 mm 95 mm 84.5 KN 106 KN 0.602 kg 26 mm
43 NN3012ZTBKR/ NN3012ZTBKR 60 mm 95 mm 50.0 KN 53.0 KN 0.522 kg 26 mm
44 NN3012ZTB/ NN3012ZTB 60 mm 95 mm 50.0 KN 53.0 KN 0.522 kg 26 mm
45 NN3013MBKR/ NN3013MBKR 65 mm 100 mm 88.5 KN 116 KN 0.862 kg 26 mm
46 NN3013MB/ NN3013MB 65 mm 100 mm 88.5 KN 116 KN 0.862 kg 26 mm
47 NN3013TBKR/ NN3013TBKR 65 mm 100 mm 88.5 KN 116 KN 0.644 kg 26 mm
48 NN3013TB/ NN3013TB 65 mm 100 mm 88.5 KN 116 KN 0.644 kg 26 mm
49 NN3013ZTBKR/ NN3013ZTBKR 65 mm 100 mm 52.5 KN 58.0 KN 0.557 kg 26 mm
50 NN3013ZTB/ NN3013ZTB 65 mm 100 mm 52.5 KN 58.0 KN 0.557 kg 26 mm
51 NN3014MBKR/ NN3014MBKR 70 mm 110 mm 112 KN 148 KN 1.23 kg 30 mm
52 NN3014MB/ NN3014MB 70 mm 110 mm 112 KN 148 KN 1.23 kg 30 mm
53 NN3014TBKR/ NN3014TBKR 70 mm 110 mm 112 KN 148 KN 0.925 kg 30 mm
54 NN3014TB/ NN3014TB 70 mm 110 mm 112 KN 148 KN 0.925 kg 30 mm
55 NN3014ZTBKR/ NN3014ZTBKR 70 mm 110 mm 66.5 KN 74.0 KN 0.809 kg 30 mm
56 NN3014ZTB/ NN3014ZTB 70 mm 110 mm 66.5 KN 74.0 KN 0.809 kg 30 mm
57 NN3015MBKR/ NN3015MBKR 75 mm 115 mm 111 KN 149 KN 1.28 kg 30 mm
58 NN3015MB/ NN3015MB 75 mm 115 mm 111 KN 149 KN 1.28 kg 30 mm
59 NN3015TBKR/ NN3015TBKR 75 mm 115 mm 111 KN 149 KN 1.28 kg 30 mm
60 NN3015TB/ NN3015TB 75 mm 115 mm 111 KN 149 KN 1.28 kg 30 mm
61 NN3015ZTBKR/ NN3015ZTBKR 75 mm 115 mm 66.0 KN 74.5 KN 0.848 kg 30 mm
62 NN3015ZTB/ NN3015ZTB 75 mm 115 mm 66.0 KN 74.5 KN 0.848 kg 30 mm
63 NN3016MBKR/ NN3016MBKR 80 mm 125 mm 137 KN 186 KN 1.77 kg 34 mm
64 NN3016MB/ NN3016MB 80 mm 125 mm 137 KN 186 KN 1.77 kg 34 mm
65 NN3016TBKR/ NN3016TBKR 80 mm 125 mm 137 KN 186 KN 1.35 kg 34 mm
66 NN3016TB/ NN3016TB 80 mm 125 mm 137 KN 186 KN 1.35 kg 34 mm
67 NN3016ZTBKR/ NN3016ZTBKR 80 mm 125 mm 81.5 KN 93.0 KN 1.19 kg 34 mm
68 NN3016ZTB/ NN3016ZTB 80 mm 125 mm 81.5 KN 93.0 KN 1.19 kg 34 mm
69 NN3017MBKR/ NN3017MBKR 85 mm 130 mm 144 KN 201 KN 1.87 kg 34 mm
70 NN3017MB/ NN3017MB 85 mm 130 mm 144 KN 201 KN 1.87 kg 34 mm
71 NN3017TBKR/ NN3017TBKR 85 mm 130 mm 144 KN 201 KN 1.42 kg 34 mm
72 NN3017TB/ NN3017TB 85 mm 130 mm 144 KN 201 KN 1.42 kg 34 mm
73 NN3017ZTBKR/ NN3017ZTBKR 85 mm 130 mm 85.5 KN 101 KN 1.25 kg 34 mm
74 NN3017ZTB/ NN3017ZTB 85 mm 130 mm 85.5 KN 101 KN 1.25 kg 34 mm
75 NN3018MBKR/ NN3018MBKR 90 mm 140 mm 164 KN 228 KN 2.38 kg 37 mm
76 NN3018MB/ NN3018MB 90 mm 140 mm 164 KN 228 KN 2.38 kg 37 mm
77 NN3018TBKR/ NN3018TBKR 90 mm 140 mm 164 KN 228 KN 1.82 kg 37 mm
78 NN3018TB/ NN3018TB 90 mm 140 mm 164 KN 228 KN 1.82 kg 37 mm
79 NN3018ZTBKR/ NN3018ZTBKR 90 mm 140 mm 97.5 KN 114 KN 1.61 kg 37 mm
80 NN3018ZTB/ NN3018ZTB 90 mm 140 mm 97.5 KN 114 KN 1.61 kg 37 mm
81 NN3019MBKR/ NN3019MBKR 95 mm 145 mm 173 KN 246 KN 2.51 kg 37 mm
82 NN3019MB/ NN3019MB 95 mm 145 mm 173 KN 246 KN 2.51 kg 37 mm
83 NN3019TBKR/ NN3019TBKR 95 mm 145 mm 173 KN 246 KN 1.91 kg 37 mm
84 NN3019TB/ NN3019TB 95 mm 145 mm 173 KN 246 KN 1.91 kg 37 mm
85 NN3019ZTBKR/ NN3019ZTBKR 95 mm 145 mm 103 KN 123 KN 1.68 kg 37 mm
86 NN3019ZTB/ NN3019ZTB 95 mm 145 mm 103 KN 123 KN 1.68 kg 37 mm
87 NN3920MBKR/ NN3920MBKR 100 mm 140 mm 122 KN 182 KN 1.32 kg 30 mm
88 NN3920MB/ NN3920MB 100 mm 140 mm 122 KN 182 KN 1.32 kg 30 mm
89 NN4920MBKR/ NN4920MBKR 100 mm 140 mm 178 KN 295 KN 1.76 kg 40 mm
90 NN4920MB/ NN4920MB 100 mm 140 mm 178 KN 295 KN 1.76 kg 40 mm
91 NNU4920MBKR/ NNU4920MBKR 100 mm 140 mm 178 KN 295 KN 1.75 kg 40 mm
92 NNU4920MB/ NNU4920MB 100 mm 140 mm 178 KN 295 KN 1.75 kg 40 mm
93 NN3020MBKR/ NN3020MBKR 100 mm 150 mm 180 KN 265 KN 2.63 kg 37 mm
94 NN3020MB/ NN3020MB 100 mm 150 mm 180 KN 265 KN 2.63 kg 37 mm
95 NN3020TBKR/ NN3020TBKR 100 mm 150 mm 180 KN 265 KN 2.00 kg 37 mm
96 NN3020TB/ NN3020TB 100 mm 150 mm 180 KN 265 KN 2.00 kg 37 mm
97 NN3020ZTBKR/ NN3020ZTBKR 100 mm 150 mm 107 KN 133 KN 1.76 kg 37 mm
98 NN3020ZTB/ NN3020ZTB 100 mm 150 mm 107 KN 133 KN 1.76 kg 37 mm
99 NN4921MBKR/ NN4921MBKR 105 mm 145 mm 185 KN 315 KN 1.91 kg 40 mm
100 NN4921MB/ NN4921MB 105 mm 145 mm 185 KN 315 KN 1.91 kg 40 mm

The double row cylindrical roller bearings have addressed several key issues across various fields, primarily reflected in the following aspects:

1. High rigidity

Due to the double row roller design, these bearings offer higher rigidity compared to single row bearings, effectively reducing vibration and improving equipment stability.

2. Adaptability to high-speed operation:

While primarily designed to handle heavy loads, the precision manufacturing process allows these bearings to support high-speed operation while maintaining smooth performance.

3. Effective noise control

High-precision double row cylindrical roller bearings, through precise installation, proper lubrication, and advanced monitoring systems, can effectively reduce operational noise and enhance overall equipment performance.

4. High cost-effectiveness

The design of double row precision cylindrical roller bearings allows for efficient load support in relatively compact spaces. Their use can reduce costs while improving rigidity and stability.


Performance enhancements and solutions for double row cylindrical roller bearings

1. Dustproof and waterproof design

Especially in harsh environments, bearings require sufficient protection to prevent dust, mud, and other contaminants from entering the bearing interior. Sealing designs can achieve this, thereby avoiding impacts on bearing performance and lifespan.

2. Roller optimization

Optimizing roller shapes can reduce contact stress, improve load capacity, and enhance durability. Surface treatments on rollers can reduce friction, improve rolling precision and load capacity, and extend bearing life.

3. Improved manufacturing precision

Using advanced foreign processing equipment and techniques, such as precision grinding and superfinishing, enhances the geometric accuracy of inner and outer rings and rollers, reducing machining errors and improving rotational precision and surface finish.

4. Enhanced material performance

Surface coating technologies can improve wear resistance and corrosion resistance, effectively extending bearing life, especially in harsh working environments where bearing performance can be significantly enhanced.


Main application fields of double row cylindrical roller bearing

1. Machine tools

In high-precision machine tools, double row precision cylindrical roller bearings are used to withstand heavy loads, ensuring machining accuracy and stability.

2. Locomotive axle boxes

These bearings are widely used in railway locomotive axle boxes. Their design can withstand high loads and effectively prevent the ingress of dust and moisture, improving reliability and service life.

3. Robotics

In industrial and service robots, precision cylindrical roller bearings ensure precise motion and high efficiency.

4. High-precision instruments:

In precision measuring instruments and optical equipment, these bearings support rotating components, ensuring instrument accuracy and stability.