Basic Parameters
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- "NJ" indicates cylindrical roller bearings: This is the identification of the bearing type, clearly indicating that NJ206 belongs to the cylindrical roller bearing series. Cylindrical roller bearings are widely used in many industrial fields due to their advantages such as large load-carrying capacity and good rigidity. They are suitable for applications that bear large radial loads and can provide stable and reliable rotational support for equipment.
- "2" represents the size series: The size series code contains information on the width series and diameter series of the bearing. In cylindrical roller bearings, different size series correspond to different overall size specifications of the bearing. The "2" size series is usually suitable for application scenarios with medium size and load requirements. It determines the relative size of the NJ206 bearing in the entire cylindrical roller bearing series, helping users select bearings of appropriate size according to the specific design requirements of the equipment to ensure the best performance in a limited space.
- "06" indicates the inner diameter size: According to the standard coding rule for bearing inner diameter codes, the inner diameter code multiplied by 5 is the actual inner diameter size of the bearing. Therefore, "06" represents that the inner diameter of the NJ206 bearing is 30mm (06×5 = 30). The inner diameter size is a key parameter for the cooperation between the bearing and the shaft. An accurate inner diameter size can ensure a tight fit between the bearing and the shaft, enabling the bearing to effectively transmit loads during operation, reduce wear and heat generation, thereby prolonging the service life of the bearing and ensuring the stable operation of the equipment.
Inner Ring with Single Flange Design: The NJ206 bearing has a single flange on the inner ring. This design provides unique performance advantages for the bearing. The single flange structure enables the inner ring to effectively limit the axial displacement of the rollers on one side, ensuring that the rollers maintain a stable positional relationship during operation. This design can not only bear radial loads but also adapt to a certain degree of axial loads, providing a reliable guarantee for the stable operation of the equipment under complex working conditions.
Outer Ring with Double Flanges Structure: Matching this is the double flange design of the outer ring. The double flanges of the outer ring provide all-round axial positioning for the rollers. Working in coordination with the single flange of the inner ring, it enables the rollers to roll precisely along the predetermined track inside the bearing. This structure not only enhances the overall rigidity of the bearing but also further improves its load-carrying capacity. It ensures that there will be no problems such as roller displacement or detachment during high-load operation of the bearing, guaranteeing the safe operation of the equipment.
Detachable Structure: The NJ206 bearing adopts a detachable structure, which is a significant feature. During installation and disassembly, this structure greatly simplifies the operation process. You can easily separate or assemble the inner ring, outer ring, rollers, and cage without complex tools and professional skills. This not only saves you valuable time and labor costs but also facilitates the daily maintenance and repair work of the equipment. When it is necessary to inspect or replace the bearing for the equipment, the detachable structure allows you to complete the operation quickly, reducing equipment downtime and improving production efficiency.
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Outstanding load-carrying capacity: The NJ206 cylindrical roller bearing excels in load-carrying capacity. It can easily handle both radial loads and a certain degree of axial loads. In industrial equipment such as various transmission devices and heavy machinery, they often face huge load challenges. The NJ206 bearing, with its optimized structural design, can stably bear these loads and ensure the normal operation of the equipment. Its strong load-carrying capacity not only extends the service life of the equipment but also reduces the number of shutdowns and maintenance due to bearing failures, providing reliable support for your production.
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Good high-speed performance: In high-speed operation application scenarios, the NJ206 bearing also performs excellently. The precise fit between the rollers and the raceway and the high-quality lubrication design enable the bearing to maintain a low friction coefficient and a stable operating temperature during high-speed rotation. This means that in high-speed equipment such as motors and machine tool spindles, the NJ206 bearing can effectively reduce energy loss, improve the operating efficiency of the equipment, and ensure the smoothness and reliability of operation. Even under long-term high-speed operation, it can maintain stable performance and provide continuous power support for your production process.
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High rigidity and stability: For equipment with high requirements for rigidity and stability, the NJ206 bearing is an ideal choice. Its unique structural design endows it with excellent rigidity and can maintain a very small deformation when bearing loads. In fields such as precision processing equipment and automated production lines, the stability and accuracy of equipment directly affect product quality. The high rigidity and stability of the NJ206 bearing ensure that the equipment can accurately perform various operations during operation, reduce vibration and deviation, improve processing accuracy and production efficiency, and provide strong guarantee for your product quality.
Product Application
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Industrial transmission field: In various industrial transmission equipment, the NJ206 bearing plays a key role. For example, in equipment such as reducers, transmissions, and conveyor belt drive devices, it can reliably transmit power and bear loads from different directions to ensure the smooth operation of the transmission system. Its good load-bearing capacity and high-speed performance enable industrial transmission equipment to efficiently complete various production tasks. Whether in low-speed and heavy-load or high-speed operating conditions, the NJ206 bearing can provide stable support for the transmission system.
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Machine tool equipment field: As a precision machining equipment, machine tools have extremely high requirements for bearings. The NJ206 bearing is widely used in key parts such as machine tool spindles and worktable guides. It can meet the needs of machine tools in high-speed cutting and high-precision machining processes and ensure the rotational accuracy and positioning accuracy of machine tools. During the machining process, the stable performance of the NJ206 bearing helps reduce tool wear and improve the machining surface quality, thereby enhancing the overall machining performance of machine tools and providing a reliable guarantee for manufacturing high-precision mechanical parts.
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Automotive industry field: As an indispensable means of transportation in modern society, the reliability of each part of a car is extremely important. The NJ206 bearing is widely used in parts such as car engines, transmissions, and wheels. In the engine, it can bear the rotational load of the crankshaft to ensure the smooth operation of the engine; in the transmission, it provides stable support for the meshing of gears to ensure smooth shifting; in the wheel hub area, it can adapt to various complex road conditions and load changes during vehicle driving and provide a solid guarantee for the safe driving of vehicles.
Product List
| Bearing No. |
Dimensions (mm) |
Basic Load Rating (N) |
Weight |
| ISO |
GOST |
d |
D |
B |
Dyn. C |
Stat. C0 |
(kg) |
| NJ202 |
42202 |
15 |
35 |
11 |
12700 |
10400 |
0.049 |
| NJ203 |
42203 |
17 |
40 |
12 |
17600 |
14600 |
0.071 |
| NJ204 |
42204 |
20 |
47 |
14 |
25700 |
22600 |
0.115 |
| NJ205 |
42205 |
25 |
52 |
15 |
29300 |
27700 |
0.142 |
| NJ206 |
42206 |
30 |
62 |
16 |
39100 |
37400 |
0.214 |
| NJ207 |
42207 |
35 |
72 |
17 |
50200 |
50200 |
0.314 |
| NJ208 |
42208 |
40 |
80 |
18 |
55700 |
55400 |
0.394 |
| NJ209 |
42209 |
45 |
85 |
19 |
63100 |
66400 |
0.451 |
| NJ210 |
42210 |
50 |
90 |
20 |
66100 |
71900 |
0.51 |
| NJ211 |
42211 |
55 |
100 |
21 |
86400 |
98700 |
0.667 |
| NJ212 |
42212 |
60 |
110 |
22 |
97700 |
107000 |
0.852 |
| NJ213 |
42213 |
65 |
120 |
23 |
108000 |
119000 |
1.078 |
| NJ214 |
42214 |
70 |
125 |
24 |
119000 |
137000 |
1.19 |
| NJ215 |
42215 |
75 |
130 |
25 |
130000 |
156000 |
1.32 |
| NJ216 |
42216 |
80 |
140 |
26 |
139000 |
167000 |
1.6 |
| NJ217 |
42217 |
85 |
150 |
28 |
167000 |
199000 |
2.01 |
| NJ218 |
42218 |
90 |
160 |
30 |
182000 |
217000 |
2.45 |
| NJ219 |
42219 |
95 |
170 |
42 |
221000 |
265000 |
3.05 |
| NJ220 |
42220 |
100 |
180 |
34 |
250000 |
306000 |
3.65 |
| NJ221 |
42221 |
105 |
190 |
36 |
201000 |
241000 |
4.14 |
| NJ222 |
42222 |
110 |
200 |
38 |
293000 |
365000 |
5.06 |
| NJ224 |
42224 |
120 |
215 |
40 |
336000 |
421000 |
6.11 |
| NJ226 |
42226 |
130 |
230 |
40 |
364000 |
453000 |
6.78 |
| NJ228 |
42228 |
140 |
250 |
42 |
392000 |
514000 |
8.77 |
| NJ230 |
42230 |
150 |
270 |
45 |
448000 |
594000 |
10.99 |
| NJ232 |
42232 |
160 |
290 |
48 |
498000 |
666000 |
15.3 |
| NJ234 |
42234 |
170 |
310 |
52 |
603000 |
802000 |
19.3 |
| NJ236 |
42236 |
180 |
320 |
52 |
626000 |
852000 |
20.1 |
