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
6910VV
50
72
12
0.6
16000
11700
9000
6910ZZ
50
72
12
0.6
16000
11700
9000
16010
50
80
10
0.6
17000
12400
8500
10000
6010
50
80
16
1
24000
16600
9500
11000
6010DDU
50
80
16
1
24000
16600
4800
6010N
50
80
16
1
24000
16600
9500
11000
6010NR
50
80
16
1
24000
16600
9500
11000
6010VV
50
80
16
1
24000
16600
9500
6010ZZ
50
80
16
1
24000
16600
9500
6210
50
90
20
1.1
38500
23200
8000
10000
6210DDU
50
90
20
1.1
38500
23200
4800
6210N
50
90
20
1.1
38500
23200
8000
10000
6210NR
50
90
20
1.1
38500
23200
8000
10000
6210VV
50
90
20
1.1
38500
23200
8000
6210ZZ
50
90
20
1.1
38500
23200
8000
6310
50
110
27
2
68000
38500
7100
8500
6310DDU
50
110
27
2
68000
38500
4300
6310N
50
110
27
2
68000
38500
7100
8500
6310NR
50
110
27
2
68000
38500
7100
8500
6310VV
50
110
27
2
68000
38500
7100
6310ZZ
50
110
27
2
68000
38500
7100
6811
55
72
9
0.3
9700
8500
8500
10000
6811DDU
55
72
9
0.3
9700
8500
4800
6811N
55
72
9
0.3
9700
8500
8500
10000