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
6909NR
45
68
12
0.6
15500
10900
9500
12000
6909VV
45
68
12
0.6
15500
10900
9500
6909ZZ
45
68
12
0.6
15500
10900
9500
16009
45
75
10
0.6
16400
11400
9000
11000
6009
45
75
16
1
23000
15200
10000
12000
6009DDU
45
75
16
1
23000
15200
5300
6009N
45
75
16
1
23000
15200
10000
12000
6009NR
45
75
16
1
23000
15200
10000
12000
6009VV
45
75
16
1
23000
15200
10000
6009ZZ
45
75
16
1
23000
15200
10000
6209
45
85
19
1.1
34500
20400
9000
11000
6209DDU
45
85
19
1.1
34500
20400
5300
6209N
45
85
19
1.1
34500
20400
9000
11000
6209NR
45
85
19
1.1
34500
20400
9000
11000
6209VV
45
85
19
1.1
34500
20400
9000
6209ZZ
45
85
19
1.1
34500
20400
9000
6309
45
100
25
1.5
58500
32000
7500
9500
6309DDU
45
100
25
1.5
58500
32000
4800
6309N
45
100
25
1.5
58500
32000
7500
9500
6309NR
45
100
25
1.5
58500
32000
7500
9500
6309VV
45
100
25
1.5
58500
32000
7500
6309ZZ
45
100
25
1.5
58500
32000
7500
6810
50
65
7
0.3
7050
6200
9500
11000
6810DDU
50
65
7
0.3
7050
6200
5300