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
6313VV
65
140
33
2.1
102000
60000
5600
6313ZZ
65
140
33
2.1
102000
60000
5600
6814
70
90
10
0.6
13300
12700
6700
8000
6814DD
70
90
10
0.6
13300
12700
3800
6011N
55
90
18
1.1
31000
21200
8500
10000
6011NR
55
90
18
1.1
31000
21200
8500
10000
6011VV
55
90
18
1.1
31000
21200
8500
6011ZZ
55
90
18
1.1
31000
21200
8500
6211
55
100
21
1.5
47500
29300
7500
9000
6211DDU
55
100
21
1.5
47500
29300
4300
6211N
55
100
21
1.5
47500
29300
7500
9000
6211NR
55
100
21
1.5
47500
29300
7500
9000
6211VV
55
100
21
1.5
47500
29300
7500
6211ZZ
55
100
21
1.5
47500
29300
7500
6311
55
120
29
2
78500
44500
6700
8000
6311DDU
55
120
29
2
78500
44500
4000
6311N
55
120
29
2
78500
44500
6700
8000
6311NR
55
120
29
2
78500
44500
6700
8000
6311VV
55
120
29
2
78500
44500
6700
6311ZZ
55
120
29
2
78500
44500
6700
6812
60
78
10
0.3
12600
10900
8000
9500
6812DD
60
78
10
0.3
12600
10900
4500
6812N
60
78
10
0.3
12600
10900
8000
9500
6812NR
60
78
10
0.3
12600
10900
8000
9500