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 NN3006-AS-K-M-SP/ NN3006-AS-K-M-SP 30 mm 55 mm 19 mm
6 NN3007-AS-K-M-SP/ NN3007-AS-K-M-SP 35 mm 62 mm 20 mm
7 NN3008-AS-K-M-SP/ NN3008-AS-K-M-SP 40 mm 68 mm 21 mm
8 NN3009-AS-K-M-SP/ NN3009-AS-K-M-SP 45 mm 75 mm 23 mm
9 NN3010-AS-K-M-SP/ NN3010-AS-K-M-SP 50 mm 80 mm 23 mm
10 NN3011-AS-K-M-SP/ NN3011-AS-K-M-SP 55 mm 90 mm 26 mm
11 NN3012-AS-K-M-SP/ NN3012-AS-K-M-SP 60 mm 95 mm 26 mm
12 NN3013-AS-K-M-SP/ NN3013-AS-K-M-SP 65 mm 100 mm 26 mm
13 NN3014-AS-K-M-SP/ NN3014-AS-K-M-SP 70 mm 110 mm 30 mm
14 NNU4914-S-K-M-SP/ NNU4914-S-K-M-SP 70 mm 110 mm 30 mm
15 NNU4915-S-K-M-SP/ NNU4915-S-K-M-SP 75 mm 105 mm 30 mm
16 NN3015-AS-K-M-SP/ NN3015-AS-K-M-SP 75 mm 115 mm 30 mm
17 NNU4916-S-K-M-SP/ NNU4916-S-K-M-SP 80 mm 110 mm 30 mm
18 NN3016-AS-K-M-SP/ NN3016-AS-K-M-SP 80 mm 125 mm 34 mm
19 NNU4917-S-K-M-SP/ NNU4917-S-K-M-SP 85 mm 120 mm 35 mm
20 NN3017-AS-K-M-SP/ NN3017-AS-K-M-SP 85 mm 130 mm 34 mm
21 NN3068-AS-K-M-SP/ NN3068-AS-K-M-SP 340 mm 520 mm 133 mm
22 NNU4972-S-K-M-SP/ NNU4972-S-K-M-SP 360 mm 480 mm 118 mm
23 NN3072-AS-K-M-SP/ NN3072-AS-K-M-SP 360 mm 540 mm 134 mm
24 NNU4976-S-K-M-SP/ NNU4976-S-K-M-SP 380 mm 520 mm 140 mm
25 NN3076-AS-K-M-SP/ NN3076-AS-K-M-SP 380 mm 560 mm 135 mm
26 NNU4980-S-K-M-SP/ NNU4980-S-K-M-SP 400 mm 540 mm 140 mm
27 NN3080-AS-K-M-SP/ NN3080-AS-K-M-SP 400 mm 600 mm 148 mm
28 NNU4984-S-K-M-SP/ NNU4984-S-K-M-SP 420 mm 560 mm 140 mm
29 NN3096-AS-K-M-SP/ NN3096-AS-K-M-SP 480 mm 700 mm 165 mm
30 NNU49/500-S-K-M-SP/ NNU49/500-S-K-M-SP 500 mm 670 mm 170 mm
31 NN30/500-AS-K-M-SP/ NN30/500-AS-K-M-SP 500 mm 720 mm 167 mm
32 NN3084-AS-K-M-SP/ NN3084-AS-K-M-SP 420 mm 620 mm 150 mm
33 NNU4988-S-K-M-SP/ NNU4988-S-K-M-SP 440 mm 600 mm 160 mm
34 NN3088-AS-K-M-SP/ NN3088-AS-K-M-SP 440 mm 650 mm 157 mm
35 NNU4992-S-K-M-SP/ NNU4992-S-K-M-SP 460 mm 620 mm 160 mm
36 NN3092-AS-K-M-SP/ NN3092-AS-K-M-SP 460 mm 680 mm 163 mm
37 NNU4996-S-K-M-SP/ NNU4996-S-K-M-SP 480 mm 650 mm 170 mm
38 NN3048-AS-K-M-SP/ NN3048-AS-K-M-SP 240 mm 360 mm 92 mm
39 NNU4952-S-K-M-SP/ NNU4952-S-K-M-SP 260 mm 360 mm 100 mm
40 NN3052-AS-K-M-SP/ NN3052-AS-K-M-SP 260 mm 400 mm 104 mm
41 NNU4956-S-K-M-SP/ NNU4956-S-K-M-SP 280 mm 380 mm 100 mm
42 NN3056-AS-K-M-SP/ NN3056-AS-K-M-SP 280 mm 420 mm 106 mm
43 NNU4960-S-K-M-SP/ NNU4960-S-K-M-SP 300 mm 420 mm 118 mm
44 NN3060-AS-K-M-SP/ NN3060-AS-K-M-SP 300 mm 460 mm 118 mm
45 NNU4964-S-K-M-SP/ NNU4964-S-K-M-SP 320 mm 440 mm 118 mm
46 NN3064-AS-K-M-SP/ NN3064-AS-K-M-SP 320 mm 480 mm 121 mm
47 NNU4968-S-K-M-SP/ NNU4968-S-K-M-SP 340 mm 460 mm 118 mm
48 NN3030-AS-K-M-SP/ NN3030-AS-K-M-SP 150 mm 225 mm 56 mm
49 NN3032-AS-K-M-SP/ NN3032-AS-K-M-SP 160 mm 240 mm 60 mm
50 NN3034-AS-K-M-SP/ NN3034-AS-K-M-SP 170 mm 260 mm 67 mm
51 NNU4936-S-K-M-SP/ NNU4936-S-K-M-SP 180 mm 250 mm 69 mm
52 NNU4934-S-K-M-SP/ NNU4934-S-K-M-SP 170 mm 230 mm 60 mm
53 NNU4932-S-K-M-SP/ NNU4932-S-K-M-SP 160 mm 220 mm 60 mm
54 NNU4930-S-K-M-SP/ NNU4930-S-K-M-SP 150 mm 210 mm 60 mm
55 NNU4928-S-K-M-SP/ NNU4928-S-K-M-SP 140 mm 190 mm 50 mm
56 NNU4926-S-K-M-SP/ NNU4926-S-K-M-SP 130 mm 180 mm 50 mm
57 NNU4924-S-K-M-SP/ NNU4924-S-K-M-SP 120 mm 165 mm 45 mm
58 NNU4922-S-K-M-SP/ NNU4922-S-K-M-SP 110 mm 150 mm 40 mm
59 NNU4921-S-K-M-SP/ NNU4921-S-K-M-SP 105 mm 145 mm 40 mm
60 NNU4920-S-K-M-SP/ NNU4920-S-K-M-SP 100 mm 140 mm 40 mm
61 NN3038-AS-K-M-SP/ NN3038-AS-K-M-SP 190 mm 290 mm 75 mm
62 NNU4940-S-K-M-SP/ NNU4940-S-K-M-SP 200 mm 280 mm 80 mm
63 NN3040-AS-K-M-SP/ NN3040-AS-K-M-SP 200 mm 310 mm 82 mm
64 NNU4944-S-K-M-SP/ NNU4944-S-K-M-SP 220 mm 300 mm 80 mm
65 NN3044-AS-K-M-SP/ NN3044-AS-K-M-SP 220 mm 340 mm 90 mm
66 NNU4948-S-K-M-SP/ NNU4948-S-K-M-SP 240 mm 320 mm 80 mm
67 NN3022-AS-K-M-SP/ NN3022-AS-K-M-SP 110 mm 170 mm 45 mm
68 NN3024-AS-K-M-SP/ NN3024-AS-K-M-SP 120 mm 180 mm 46 mm
69 NN3028-AS-K-M-SP/ NN3028-AS-K-M-SP 140 mm 210 mm 53 mm
70 NN3026-AS-K-M-SP/ NN3026-AS-K-M-SP 130 mm 200 mm 52 mm
71 NN3036-AS-K-M-SP/ NN3036-AS-K-M-SP 180 mm 280 mm 74 mm
72 NNU4938-S-K-M-SP/ NNU4938-S-K-M-SP 190 mm 260 mm 69 mm
73 NNU4918-S-K-M-SP/ NNU4918-S-K-M-SP 90 mm 125 mm 35 mm
74 NN3018-AS-K-M-SP/ NN3018-AS-K-M-SP 90 mm 140 mm 37 mm
75 NNU4919-S-K-M-SP/ NNU4919-S-K-M-SP 95 mm 130 mm 35 mm
76 NN3019-AS-K-M-SP/ NN3019-AS-K-M-SP 95 mm 145 mm 37 mm
77 NN3020-AS-K-M-SP/ NN3020-AS-K-M-SP 100 mm 150 mm 37 mm
78 NN3021-AS-K-M-SP/ NN3021-AS-K-M-SP 105 mm 160 mm 41 mm
79 NN3006TBKR/ NN3006TBKR 30 mm 55 mm 31.0 KN 37.0 KN 0.171 kg 19 mm
80 NN3006TB/ NN3006TB 30 mm 55 mm 31.0 KN 37.0 KN 0.171 kg 19 mm
81 NN3006ZTBKR/ NN3006ZTBKR 30 mm 55 mm 18.3 KN 18.6 KN 0.152 kg 19 mm
82 NN3006ZTB/ NN3006ZTB 30 mm 55 mm 18.3 KN 18.6 KN 0.152 kg 19 mm
83 NN3007MBKR/ NN3007MBKR 35 mm 62 mm 39.5 KN 50.0 KN 0.297 kg 20 mm
84 NN3007MB/ NN3007MB 35 mm 62 mm 39.5 KN 50.0 KN 0.297 kg 20 mm
85 NN3007TBKR/ NN3007TBKR 35 mm 62 mm 39.5 KN 50.0 KN 0.227 kg 20 mm
86 NN3007TB/ NN3007TB 35 mm 62 mm 39.5 KN 50.0 KN 0.227 kg 20 mm
87 NN3007ZTBKR/ NN3007ZTBKR 35 mm 62 mm 23.3 KN 25.0 KN 0.198 kg 20 mm
88 NN3007ZTB/ NN3007ZTB 35 mm 62 mm 23.3 KN 25.0 KN 0.198 kg 20 mm
89 NN3008MBKR/ NN3008MBKR 40 mm 68 mm 50.0 KN 55.5 KN 0.356 kg 21 mm
90 NN3008MB/ NN3008MB 40 mm 68 mm 50.0 KN 55.5 KN 0.356 kg 21 mm
91 NN3008TBKR/ NN3008TBKR 40 mm 68 mm 50.0 KN 55.5 KN 0.269 kg 21 mm
92 NN3008TB/ NN3008TB 40 mm 68 mm 50.0 KN 55.5 KN 0.269 kg 21 mm
93 NN3008ZTBKR/ NN3008ZTBKR 40 mm 68 mm 29.6 KN 27.7 KN 0.234 kg 21 mm
94 NN3008ZTB/ NN3008ZTB 40 mm 68 mm 29.6 KN 27.7 KN 0.234 kg 21 mm
95 NN3009MBKR/ NN3009MBKR 45 mm 75 mm 59.5 KN 68.5 KN 0.471 kg 23 mm
96 NN3009MB/ NN3009MB 45 mm 75 mm 59.5 KN 68.5 KN 0.471 kg 23 mm
97 NN3009TBKR/ NN3009TBKR 45 mm 75 mm 57.5 KN 65.5 KN 0.348 kg 23 mm
98 NN3009TB/ NN3009TB 45 mm 75 mm 57.5 KN 65.5 KN 0.348 kg 23 mm
99 NN3009ZTBKR/ NN3009ZTBKR 45 mm 75 mm 34.0 KN 32.5 KN 0.302 kg 23 mm
100 NN3009ZTB/ NN3009ZTB 45 mm 75 mm 34.0 KN 32.5 KN 0.302 kg 23 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.