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
6812VV
60
78
10
0.3
12600
10900
8000
6812ZZ
60
78
10
0.3
12600
10900
8000
6912
60
85
13
1
21400
16300
7500
9000
6912DDU
60
85
13
1
21400
16300
4300
6912N
60
85
13
1
21400
16300
7500
9000
6912NR
60
85
13
1
21400
16300
7500
9000
6912VV
60
85
13
1
21400
16300
7500
6912ZZ
60
85
13
1
21400
16300
7500
16012
60
95
11
0.6
22000
17500
7100
8500
6012
60
95
18
1.1
32500
23200
8000
9500
6012DDU
60
95
18
1.1
32500
23200
4000
6012N
60
95
18
1.1
32500
23200
8000
9500
6012NR
60
95
18
1.1
32500
23200
8000
9500
6012VV
60
95
18
1.1
32500
23200
8000
6012ZZ
60
95
18
1.1
32500
23200
8000
6212
60
110
22
1.5
57500
36000
6700
8000
6212DDU
60
110
22
1.5
57500
36000
3800
6212N
60
110
22
1.5
57500
36000
6700
8000
6212NR
60
110
22
1.5
57500
36000
6700
8000
6212VV
60
110
22
1.5
57500
36000
6700
6910
50
72
12
0.6
16000
11700
9000
11000
6910DDU
50
72
12
0.6
16000
11700
5300
6910N
50
72
12
0.6
16000
11700
9000
11000
6910NR
50
72
12
0.6
16000
11700
9000
11000