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
6907VV
35
55
10
0.6
11600
7250
12000
6306NR
30
72
19
1.1
29300
15000
11000
13000
63/32DDU
32
75
20
1.1
33000
17000
6300
6907ZZ
35
55
10
0.6
11600
7250
12000
6306VV
30
72
19
1.1
29300
15000
11000
63/32N
32
75
20
1.1
33000
17000
9000
11000
16007
35
62
9
0.3
12800
8200
11000
13000
6306ZZ
30
72
19
1.1
29300
15000
11000
63/32NR
32
75
20
1.1
33000
17000
9000
11000
6007
35
62
14
1
17600
10300
13000
15000
60/32
32
58
13
1
16600
9150
12000
14000
63/32VV
32
75
20
1.1
33000
17000
9000
6007DDU
35
62
14
1
17600
10300
6700
60/32DDU
32
58
13
1
16600
9150
7500
63/32ZZ
32
75
20
1.1
33000
17000
9000
6007N
35
62
14
1
17600
10300
13000
15000
60/32N
32
58
13
1
16600
9150
12000
14000
6807
35
47
7
0.3
5400
4100
14000
16000
6007NR
35
62
14
1
17600
10300
13000
15000
60/32NR
32
58
13
1
16600
9150
12000
14000
6807DD
35
47
7
0.3
5400
4100
7500
6007VV
35
62
14
1
17600
10300
13000
60/32VV
32
58
13
1
16600
9150
12000
6807N
35
47
7
0.3
5400
4100
14000
16000