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
6900
10
22
6
0.3
2970
1270
32000
38000
6900DD
10
22
6
0.3
2970
1270
22000
6900N
10
22
6
0.3
2970
1270
32000
38000
6900NR
10
22
6
0.3
2970
1270
32000
38000
6900VV
10
22
6
0.3
2970
1270
32000
6900ZZ
10
22
6
0.3
2970
1270
32000
6000
10
26
8
0.3
5050
1970
30000
36000
6000DDU
10
26
8
0.3
5050
1970
22000
6000N
10
26
8
0.3
5050
1970
30000
36000
6000NR
10
26
8
0.3
5050
1970
30000
36000
6000VV
10
26
8
0.3
5050
1970
30000
6000ZZ
10
26
8
0.3
5050
1970
30000
6200
10
30
9
0.6
5600
2390
28000
34000
6200DDU
10
30
9
0.6
5600
2390
18000
6200N
10
30
9
0.6
5600
2390
28000
34000
6200NR
10
30
9
0.6
5600
2390
28000
34000
6200VV
10
30
9
0.6
5600
2390
28000
6200ZZ
10
30
9
0.6
5600
2390
28000
6300
10
35
11
0.6
8900
3450
26000
30000
6300DDU
10
35
11
0.6
8900
3450
17000
6300N
10
35
11
0.6
8900
3450
26000
30000
6300NR
10
35
11
0.6
8900
3450
26000
30000
6300VV
10
35
11
0.6
8900
3450
26000
6300ZZ
10
35
11
0.6
8900
3450
26000