Double-Row Cylindrical Roller Bearings

**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.*

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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
NN3008K
40
68
21
1
61
53000
55500
9000
11000
NN3009
45
75
23
1
67.5
63500
68500
8500
10000
NN3009K
45
75
23
1
67.5
63500
68500
8500
10000
NN3010
50
80
23
1
72.5
65500
72500
7500
9000
NN3010K
50
80
23
1
72.5
65500
72500
7500
9000
NN3011
55
90
26
1.1
81
85500
96500
6700
8000
NN3011K
55
90
26
1.1
81
85500
96500
6700
8000
NN3012
60
95
26
1.1
86.1
90000
106000
6300
7500
NN3012K
60
95
26
1.1
86.1
90000
106000
6300
7500
NN3013K
65
100
26
1.1
91
95000
116000
6000
7100
NN3013
65
100
26
1.1
91
95000
116000
6000
7100
NN3014K
70
110
30
1.1
100
120000
148000
5600
6700
NN3014
70
110
30
1.1
100
120000
148000
5600
6700
NN3015
75
115
30
1.1
105
119000
149000
5300
6300
NN3015K
75
115
30
1.1
105
119000
149000
5300
6300
NN3016
80
125
34
1.1
113
147000
186000
4800
6000
NN3016K
80
125
34
1.1
113
147000
186000
4800
6000
NN3017
85
130
34
1.1
118
154000
201000
4500
5600
NN3017K
85
130
34
1.1
118
154000
201000
4500
5600
NN3018
90
140
37
1.5
127
176000
228000
4300
5000
NN3018K
90
140
37
1.5
127
176000
228000
4300
5000
NN3019
95
145
37
1.5
132
185000
246000
4000
5000
NN3019K
95
145
37
1.5
132
185000
246000
4000
5000
NNU4920
100
140
40
1.1
190000
295000
4000
5000