**Introduction to NSK’s Double Row Cylindrical Roller Bearings: Precision, Performance, and Reliability**
In the demanding world of industrial machinery, automotive systems, and precision equipment, the performance and durability of rotating components are critical to operational success. NSK, a global leader in motion and control technologies, offers a superior solution with its **Double Row Cylindrical Roller Bearings**—engineered to deliver unmatched load capacity, rigidity, and precision in even the most challenging applications.
### **Technical Features & Design Excellence**
NSK’s **Double Row Cylindrical Roller Bearings** are designed with advanced engineering to optimize load distribution and minimize friction. Key features include:
– **High Load Capacity:** The double-row arrangement of precision-ground rollers significantly increases radial load capacity compared to single-row designs, making them ideal for heavy-duty applications.
– **Enhanced Rigidity:** A robust cage design ensures proper roller alignment, reducing deflection under high loads and improving system stability.
– **Low Friction & Heat Generation:** Optimized roller profiles and high-quality steel materials minimize energy loss, extending bearing life and reducing maintenance needs.
– **Precision Tolerance:** Manufactured to exacting ISO standards, these bearings provide consistent performance in high-speed and high-precision environments.
– **Versatile Configurations:** Available in various designs, including **NU, NN, and NNU types**, to accommodate different mounting requirements and operational demands.
### **Performance Advantages for Industrial & Automotive Applications**
NSK’s Double Row Cylindrical Roller Bearings excel in applications where reliability and precision are non-negotiable:
– **Industrial Machinery:** Used in machine tools, gearboxes, and rolling mills, these bearings ensure smooth operation under heavy radial loads and high rotational speeds.
– **Automotive Systems:** In transmissions, wheel hubs, and electric vehicle drivetrains, they provide the durability needed for long service life and reduced downtime.
– **Precision Equipment:** Critical in robotics, medical devices, and aerospace systems, where minimal vibration and high positional accuracy are essential.
### **Why Choose NSK?**
With over a century of expertise in bearing technology, NSK combines **advanced materials, precision manufacturing, and rigorous testing** to deliver bearings that outperform industry standards. Whether in extreme temperatures, contaminated environments, or high-speed operations, NSK’s Double Row Cylindrical Roller Bearings provide **longer service life, reduced energy consumption, and enhanced operational efficiency.**
For engineers and designers seeking a reliable, high-performance bearing solution, NSK’s Double Row Cylindrical Roller Bearings represent the ideal balance of **strength, precision, and durability**—ensuring optimal motion control in the most demanding applications.
*Experience the NSK advantage—where innovation meets precision engineering.*
| Designations | Nominal Dimensions | Basic Load Ratings | Speeds Limiting Speeds |
||||||
|---|---|---|---|---|---|---|---|---|---|
| d mm |
D mm |
B mm |
r(min.) mm |
FW mm |
Cr N |
C0r N |
Grease min-1 |
Oil (Oil-bath) min-1 |
|
40 |
68 |
21 |
1 |
61 |
53000 |
55500 |
9000 |
11000 |
|
45 |
75 |
23 |
1 |
67.5 |
63500 |
68500 |
8500 |
10000 |
|
45 |
75 |
23 |
1 |
67.5 |
63500 |
68500 |
8500 |
10000 |
|
50 |
80 |
23 |
1 |
72.5 |
65500 |
72500 |
7500 |
9000 |
|
50 |
80 |
23 |
1 |
72.5 |
65500 |
72500 |
7500 |
9000 |
|
55 |
90 |
26 |
1.1 |
81 |
85500 |
96500 |
6700 |
8000 |
|
55 |
90 |
26 |
1.1 |
81 |
85500 |
96500 |
6700 |
8000 |
|
60 |
95 |
26 |
1.1 |
86.1 |
90000 |
106000 |
6300 |
7500 |
|
60 |
95 |
26 |
1.1 |
86.1 |
90000 |
106000 |
6300 |
7500 |
|
65 |
100 |
26 |
1.1 |
91 |
95000 |
116000 |
6000 |
7100 |
|
65 |
100 |
26 |
1.1 |
91 |
95000 |
116000 |
6000 |
7100 |
|
70 |
110 |
30 |
1.1 |
100 |
120000 |
148000 |
5600 |
6700 |
|
70 |
110 |
30 |
1.1 |
100 |
120000 |
148000 |
5600 |
6700 |
|
75 |
115 |
30 |
1.1 |
105 |
119000 |
149000 |
5300 |
6300 |
|
75 |
115 |
30 |
1.1 |
105 |
119000 |
149000 |
5300 |
6300 |
|
80 |
125 |
34 |
1.1 |
113 |
147000 |
186000 |
4800 |
6000 |
|
80 |
125 |
34 |
1.1 |
113 |
147000 |
186000 |
4800 |
6000 |
|
85 |
130 |
34 |
1.1 |
118 |
154000 |
201000 |
4500 |
5600 |
|
85 |
130 |
34 |
1.1 |
118 |
154000 |
201000 |
4500 |
5600 |
|
90 |
140 |
37 |
1.5 |
127 |
176000 |
228000 |
4300 |
5000 |
|
90 |
140 |
37 |
1.5 |
127 |
176000 |
228000 |
4300 |
5000 |
|
95 |
145 |
37 |
1.5 |
132 |
185000 |
246000 |
4000 |
5000 |
|
95 |
145 |
37 |
1.5 |
132 |
185000 |
246000 |
4000 |
5000 |
|
100 |
140 |
40 |
1.1 |
190000 |
295000 |
4000 |
5000 |
||