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
6003N
17
35
10
0.3
6600
3250
24000
28000
6804
20
32
7
0.3
4400
2470
22000
26000
6302VV
15
42
13
1
12600
5450
19000
6003NR
17
35
10
0.3
6600
3250
24000
28000
6804DD
20
32
7
0.3
4400
2470
13000
6302ZZ
15
42
13
1
12600
5450
19000
6003VV
17
35
10
0.3
6600
3250
24000
6804N
20
32
7
0.3
4400
2470
22000
26000
6803
17
26
5
0.3
2890
1570
26000
30000
6003ZZ
17
35
10
0.3
6600
3250
24000
6804NR
20
32
7
0.3
4400
2470
22000
26000
6803DD
17
26
5
0.3
2890
1570
15000
6203
17
40
12
0.6
10500
4800
20000
24000
6804VV
20
32
7
0.3
4400
2470
22000
6803VV
17
26
5
0.3
2890
1570
26000
6203DDU
17
40
12
0.6
10500
4800
12000
6803ZZ
17
26
5
0.3
2890
1570
26000
6203N
17
40
12
0.6
10500
4800
20000
24000
6903
17
30
7
0.3
5050
2550
24000
28000
6203NR
17
40
12
0.6
10500
4800
20000
24000
6903DDU
17
30
7
0.3
5050
2550
15000
6203VV
17
40
12
0.6
10500
4800
20000
6903N
17
30
7
0.3
5050
2550
24000
28000
6203ZZ
17
40
12
0.6
10500
4800
20000