Single-Row Deep Groove Ball Bearings

**Introduction to NSK’s Single Row Deep Groove Ball Bearings: Precision, Performance, and Reliability**

NSK’s Single Row Deep Groove Ball Bearings represent the pinnacle of precision motion and control technology, engineered to deliver exceptional performance, durability, and efficiency across a wide range of industrial, automotive, and precision equipment applications. As a foundational component in rotating machinery, these bearings are designed to handle radial and axial loads simultaneously, offering smooth operation, low friction, and long service life even under demanding conditions.

### **Technical Features and Design Excellence**
NSK’s Single Row Deep Groove Ball Bearings are characterized by their robust construction and advanced material science. Key features include:
– **High-Precision Grinding:** Manufactured to ultra-tight tolerances, these bearings ensure minimal vibration and noise, making them ideal for high-speed applications.
– **Optimized Raceway Geometry:** The deep groove design allows for effective load distribution, enhancing both radial and axial load capacity.
– **Premium Steel and Lubrication Options:** Utilizing high-grade chromium steel (SUJ2 equivalent) and advanced heat treatment processes, NSK bearings achieve superior hardness and fatigue resistance. Custom lubrication options, including grease, oil, or solid lubricants, further extend service intervals.
– **Sealed and Shielded Variants:** Available with rubber seals (RS, 2RS) or metal shields (ZZ) to protect against contamination while retaining lubrication, improving reliability in harsh environments.

### **Performance Advantages**
NSK’s deep groove ball bearings are engineered to outperform competitors in critical areas:
– **Low Friction & Energy Efficiency:** Precision-ground surfaces and optimized internal geometries reduce torque losses, contributing to energy savings in motors, pumps, and automotive systems.
– **High-Speed Capability:** Advanced cage designs (stamped steel, machined brass, or polymer) minimize centrifugal forces, enabling stable operation at elevated speeds.
– **Extended Service Life:** NSK’s proprietary materials and surface treatments, such as Super-TF coating, enhance wear resistance and corrosion protection, reducing maintenance downtime.

### **Typical Applications**
These bearings are indispensable in industries where precision and reliability are paramount:
– **Industrial Machinery:** Electric motors, gearboxes, conveyors, and machine tool spindles benefit from their high load capacity and smooth rotation.
– **Automotive Systems:** Used in alternators, wheel hubs, and transmission systems, NSK bearings contribute to fuel efficiency and reduced NVH (Noise, Vibration, Harshness).
– **Precision Equipment:** Medical devices, robotics, and semiconductor manufacturing equipment rely on their quiet, vibration-free operation for accuracy.

With decades of expertise in bearing technology, NSK continues to innovate, ensuring that its Single Row Deep Groove Ball Bearings meet the evolving demands of modern engineering—delivering unmatched performance, reliability, and efficiency across global industries.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
B
mm
r(min.)
mm
Cr
N
C0r
N
Grease
min-1
Oil (Oil-bath)
min-1
6818N
90
115
13
1
20900
21000
5300
6300
6818NR
90
115
13
1
20900
21000
5300
6300
6818VV
90
115
13
1
20900
21000
5300
6818ZZ
90
115
13
1
20900
21000
5300
6918
90
125
18
1.1
36000
31500
5000
6000
6918DDU
90
125
18
1.1
36000
31500
2800
6918N
90
125
18
1.1
36000
31500
5000
6000
6918NR
90
125
18
1.1
36000
31500
5000
6000
6918VV
90
125
18
1.1
36000
31500
5000
6918ZZ
90
125
18
1.1
36000
31500
5000
16018
90
140
16
1
45500
39500
4800
5600
6018
90
140
24
1.5
64000
50000
5600
6300
6018DDU
90
140
24
1.5
64000
50000
2800
6018N
90
140
24
1.5
64000
50000
5600
6300
6018NR
90
140
24
1.5
64000
50000
5600
6300
6018VV
90
140
24
1.5
64000
50000
5600
6018ZZ
90
140
24
1.5
64000
50000
5600
6218
90
160
30
2
106000
71500
4500
5600
6218DDU
90
160
30
2
106000
71500
2600
6218N
90
160
30
2
106000
71500
4500
5600
6218NR
90
160
30
2
106000
71500
4500
5600
6218VV
90
160
30
2
106000
71500
4500
6218ZZ
90
160
30
2
106000
71500
4500
6318
90
190
43
3
157000
107000
4000
4800