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
6805DD
25
37
7
0.3
4950
3150
10000
6005ZZ
25
47
12
0.6
11100
5850
18000
60/28N
28
52
12
0.6
13700
7400
14000
16000
6805N
25
37
7
0.3
4950
3150
18000
22000
6006
30
55
13
1
14600
8300
15000
18000
60/28NR
28
52
12
0.6
13700
7400
14000
16000
6805NR
25
37
7
0.3
4950
3150
18000
22000
6205
25
52
15
1
15400
7850
15000
18000
6805VV
25
37
7
0.3
4950
3150
18000
6205DDU
25
52
15
1
15400
7850
9000
6805ZZ
25
37
7
0.3
4950
3150
18000
6205N
25
52
15
1
15400
7850
15000
18000
6905DDU
25
42
9
0.3
7750
4550
10000
6205NR
25
52
15
1
15400
7850
15000
18000
6905N
25
42
9
0.3
7750
4550
16000
19000
6205VV
25
52
15
1
15400
7850
15000
6905NR
25
42
9
0.3
7750
4550
16000
19000
6205ZZ
25
52
15
1
15400
7850
15000
6905VV
25
42
9
0.3
7750
4550
16000
6305
25
62
17
1.1
22600
11200
13000
16000
6905
25
42
9
0.3
7750
4550
16000
19000
6304N
20
52
15
1.1
17500
7900
16000
19000
63/22
22
56
16
1.1
20200
9250
13000
16000
16004
20
42
8
0.3
8700
4450
18000
20000