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
6206VV
30
62
16
1
21400
11300
12000
6206ZZ
30
62
16
1
21400
11300
12000
6306
30
72
19
1.1
29300
15000
11000
13000
6306DDU
30
72
19
1.1
29300
15000
6700
63/22DDU
22
56
16
1.1
20200
9250
9500
63/22N
22
56
16
1.1
20200
9250
13000
16000
63/22NR
22
56
16
1.1
20200
9250
13000
16000
63/22VV
22
56
16
1.1
20200
9250
13000
63/22ZZ
22
56
16
1.1
20200
9250
13000
6805
25
37
7
0.3
4950
3150
18000
22000
6805DD
25
37
7
0.3
4950
3150
10000
6805N
25
37
7
0.3
4950
3150
18000
22000
6805NR
25
37
7
0.3
4950
3150
18000
22000
6805VV
25
37
7
0.3
4950
3150
18000
6805ZZ
25
37
7
0.3
4950
3150
18000
6905DDU
25
42
9
0.3
7750
4550
10000
6905N
25
42
9
0.3
7750
4550
16000
19000
6905NR
25
42
9
0.3
7750
4550
16000
19000
6905VV
25
42
9
0.3
7750
4550
16000
6905ZZ
25
42
9
0.3
7750
4550
16000
16005
25
47
8
0.3
9750
5600
15000
18000
6005
25
47
12
0.6
11100
5850
18000
22000
6005DDU
25
47
12
0.6
11100
5850
9500
6005N
25
47
12
0.6
11100
5850
18000
22000