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
63/28VV
28
68
18
1.1
29400
14000
10000
63/28ZZ
28
68
18
1.1
29400
14000
10000
6806
30
42
7
0.3
5200
3650
15000
18000
6806DD
30
42
7
0.3
5200
3650
9000
6806N
30
42
7
0.3
5200
3650
15000
18000
6806NR
30
42
7
0.3
5200
3650
15000
18000
6806VV
30
42
7
0.3
5200
3650
15000
6806ZZ
30
42
7
0.3
5200
3650
15000
6906
30
47
9
0.3
7950
5000
14000
17000
6906DDU
30
47
9
0.3
7950
5000
8500
6906N
30
47
9
0.3
7950
5000
14000
17000
6906NR
30
47
9
0.3
7950
5000
14000
17000
6906VV
30
47
9
0.3
7950
5000
14000
6906ZZ
30
47
9
0.3
7950
5000
14000
16006
30
55
9
0.3
12400
7350
13000
15000
6006DDU
30
55
13
1
14600
8300
8000
6006N
30
55
13
1
14600
8300
15000
18000
6006NR
30
55
13
1
14600
8300
15000
18000
6006VV
30
55
13
1
14600
8300
15000
6006ZZ
30
55
13
1
14600
8300
15000
6206
30
62
16
1
21400
11300
12000
15000
6206DDU
30
62
16
1
21400
11300
7500
6206N
30
62
16
1
21400
11300
12000
15000
6206NR
30
62
16
1
21400
11300
12000
15000