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Series NNC-Double Row Full Complement Cylindrical Roller Bearings OEM/ODM

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Series NNC-Double Row Full Complement Cylindrical Roller Bearings

  • NNC
  • NNCF
  • NNCL
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  • Design Variants
  • Misalignment
  • Cage
  • Tolerance
  • Internal clearance
Model
 Dimensions Rated load Extreme speed Bearing dimensions Weight
d
D
B
 r1,r2 Min Dynamic load Cr Static load Cor Grease lubrication Oil lubrication E d1 D1 Bs Bk s
NNC48/500V
500
620
118
 3 1625 4987 200 380 -- 547 571 9.4 5 -- 82.5
NNC48/530V
530
650
118
 3 1700 5285 180 340 -- 577.5 602.5 9.4 5 -- 87.5
NNC4830V
150
190
40
 1.1 230 560 720 1500 -- 165 174 7 4 -- 3
NNC4832V
160
200
40
 1.1 238 600 680 1400 -- 176.5 185.5 7 4 -- 3.2
NNC4834V
170
215
45
 1.1 258 631 640 1300 -- 187.5 196.5 7 4 -- 4.2
NNC4836V
180
225
45
 1.1 266 664 610 1200 -- 196 207 7 4 -- 4.5
NNC4838V
190
240
50
 1.5 305 760 560 1150 -- 209 220 7 4 -- 5.8
NNC4840V
200
250
50
 1.5 315 799 550 1100 -- 219.5 230 7 4 -- 6
NNC4844V
220
270
50
 1.5 330 878 500 1000 -- 240.5 251.5 7 4 -- 6.5
NNC4848V
240
300
60
 2 497 1292 480 900 -- 261.5 275.5 8 4 -- 10.3
NNC4852V
260
320
60
 2 521 1406 430 820 -- 283.5 297.5 8 4 -- 11.1
NNC4856V
280
350
69
 2 680 1853 400 750 -- 309 325 8 4 -- 16.1
NNC4860V
300
380
80
 2.1 801 2146 380 700 -- 330.5 348.5 9.4 5 -- 22.9
NNC4864V
320
400
80
 2.1 832 2300 340 640 -- 353.5 371.5 9.4 5 -- 24
NNC4868V
340
420
80
 2.1 850 2415 320 600 -- 370.5 388.5 9.4 5 -- 25.5
NNC4872V
360
440
80
 2.1 880 2571 300 560 -- 393 411 9.4 5 -- 27
NNC4876V
380
480
100
 2.1 1293 3618 280 530 -- 421.5 444.5 9.4 5 -- 45
NNC4880V
400
500
100
 2.1 1311 3748 270 500 -- 436 459 9.4 5 -- 47
NNC49/500V
500
670
170
 5 3350 8850 170 360 -- 568.5 610.5 9.4 5 -- 179
NNC49/530V
530
710
180
 4 3870 10100 160 340 -- 588 648 9.4 5 -- 208
NNC4912V
60
85
25
 1 76.5 134 1700 3400 -- 69.5 76.5 4.5 3.5 -- 0.48
NNC4914V
70
100
30
 1 103 188 1400 3000 -- 82 89 4.5 3.5 -- 0.8
NNC4916V
80
110
30
 1 110 210 1200 2600 -- 90.5 98 5 3.5 -- 0.9
NNC4918V
90
125
35
 1.1 146 292 1100 2300 -- 103.5 111.5 5 3.5 -- 1.4
NNC4920V
100
140
40
 1.1 190 390 950 2000 -- 116.5 125.5 5 3.5 -- 2.1
NNC4922V
110
150
40
 1.1 197 420 900 1900 -- 125 134 6 3.5 -- 2.3
NNC4924V
120
165
45
 1.1 220 465 800 1700 -- 139 149 6 3.5 -- 3.2
NNC4926V
130
180
50
 1.5 255 540 750 1600 -- 149.5 160.5 6 3.5 -- 4.2
NNC4928V
140
190
50
 1.5 265 576 700 1500 -- 160 171 6 3.5 -- 4.4
NNC4930V
150
210
60
 2 383 843 680 1400 -- 172.5 185.5 7 4 -- 7
NNC4932V
160
220
60
 2 399 906 650 1300 -- 184.5 197.5 7 4 -- 7.2
NNC4934V
170
230
60
 2 408 950 600 1200 -- 192.5 205.5 7 4 -- 7.6
NNC4936V
180
250
69
 2 547 1220 570 1100 -- 207 223 7 4 -- 11
NNC4938V
190
260
69
 2 562 1290 550 1100 -- 217.5 233 7 4 -- 11.5
NNC4940V
200
280
80
 2.1 661 1495 530 1000 -- 233 251 8 4 -- 16
NNC4944V
220
300
80
 2.1 690 1610 500 950 -- 250 268 8 4 -- 17.5
NNC4948V
240
320
80
 2.1 725 1762 450 850 -- 273 291 8 4 -- 18.7
NNC4952V
260
360
100
 2.1 1070 2520 400 750 -- 297 320 9.4 5 -- 33.1
NNC4956V
280
380
100
 2.1 1120 2710 380 700 -- 319 342 9.4 5 -- 34.5
NNC4960V
300
420
118
 3 1560 3630 340 650 -- 346.5 375.5 9.4 5 -- 53
NNC4964V
320
440
118
 3 1600 3835 320 600 -- 365.5 399 9.4 5 -- 56
NNC4968V
340
460
118
 3 1640 4035 300 560 -- 383.5 412.5 9.4 5 -- 60.5
NNC4972V
360
480
118
 2.5 1690 4240 300 550 -- 399 436.5 9.4 5 -- 61
NNC4976V
380
520
140
 4 2124 5460 260 500 -- 433.5 465.5 9.4 5 -- 93
NNC4996V
480
650
170
 5 3720 8420 180 360 -- 537 592 9.4 5 -- 170

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 NNC-Double Row Full Complement Cylindrical Roller Bearings Factory and OEM/ODM Series NNC-Double Row Full Complement Cylindrical Roller 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. Construction of Series NNC Bearings
At the core of Series NNC bearings is their unique arrangement of cylindrical rollers and integral flanges. The inner ring of the bearing is equipped with three integral flanges, strategically positioned to provide enhanced axial support and stability. These flanges help distribute axial loads evenly across the bearing, reducing stress concentrations and minimizing the risk of premature failure. On the outer ring of Series NNC bearings, there is one integral flange on one side and a loose rib on the opposite side. This asymmetrical design allows the bearing to accommodate minor axial forces in both directions, making it versatile for applications where axial positioning is critical. Whether it's maintaining precise alignment in a gearbox or supporting heavy radial loads in a conveyor system, Series NNC bearings excel in providing reliable performance under challenging operating conditions. The materials used in the construction of Series NNC bearings are carefully selected to ensure optimal strength, durability, and resistance to wear. High-quality steel alloys and advanced heat treatment processes are employed to enhance the hardness and toughness of bearing components, thereby extending service life and minimizing maintenance requirements. Series NNC bearings are designed with tight tolerances and strict quality control measures to ensure consistent performance and dimensional accuracy. Advanced manufacturing techniques, such as precision machining and grinding, are employed to achieve smooth and uniform surfaces, reducing friction and minimizing energy losses during operation.The construction of Series NNC bearings reflects a commitment to excellence in engineering and design. By combining innovative features, high-quality materials, and meticulous craftsmanship, these bearings deliver superior performance, reliability, and longevity in the most demanding industrial applications.

2. Applications of Series NNC Bearings
Series NNC Double Row Full Complement Cylindrical Roller Bearings find widespread use across a diverse range of industries and applications, owing to their robust construction and exceptional performance characteristics. In heavy machinery applications, such as mining equipment and construction machinery, Series NNC bearings are relied upon to withstand extreme radial loads, shock loads, and harsh operating conditions. Their high load-carrying capacity and ability to accommodate axial forces make them indispensable components in crushers, excavators, and heavy-duty conveyors. Metallurgical processes, including steel rolling mills and metal smelting operations, also benefit from the superior performance of Series NNC bearings. These bearings excel in supporting the heavy radial loads and high-speed rotation encountered in rolling mill stands, continuous casting machines, and rotary kilns, ensuring smooth and efficient operation of critical equipment. Wind energy is another sector where Series NNC bearings play a vital role in supporting the main shaft of wind turbines. With the increasing demand for renewable energy sources, wind turbine manufacturers rely on the durability and reliability of Series NNC bearings to maximize energy production and minimize maintenance downtime. Series NNC bearings are commonly used in gearboxes, machine tools, and printing presses, where precise axial positioning and high radial load capacity are essential for optimal performance. Whether it's transmitting power in a gearbox or guiding the movement of machine components, these bearings contribute to the efficiency and longevity of the equipment they support.