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
6811NR
55
72
9
0.3
9700
8500
8500
10000
6811VV
55
72
9
0.3
9700
8500
8500
6811ZZ
55
72
9
0.3
9700
8500
8500
6911
55
80
13
1
17600
13300
8000
9500
6911DDU
55
80
13
1
17600
13300
4500
6911N
55
80
13
1
17600
13300
8000
9500
6911NR
55
80
13
1
17600
13300
8000
9500
6911VV
55
80
13
1
17600
13300
8000
6911ZZ
55
80
13
1
17600
13300
8000
16011
55
90
11
0.6
21400
16300
7500
9000
6011
55
90
18
1.1
31000
21200
8500
10000
6011DDU
55
90
18
1.1
31000
21200
4500
6308NR
40
90
23
1.5
45000
24000
9000
11000
6308VV
40
90
23
1.5
45000
24000
9000
6308ZZ
40
90
23
1.5
45000
24000
9000
6809
45
58
7
0.3
7250
6150
11000
13000
6809DD
45
58
7
0.3
7250
6150
6000
6809N
45
58
7
0.3
7250
6150
11000
13000
6809NR
45
58
7
0.3
7250
6150
11000
13000
6809VV
45
58
7
0.3
7250
6150
11000
6809ZZ
45
58
7
0.3
7250
6150
11000
6909
45
68
12
0.6
15500
10900
9500
12000
6909DDU
45
68
12
0.6
15500
10900
5600
6909N
45
68
12
0.6
15500
10900
9500
12000