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
6318DDU
90
190
43
3
157000
107000
2400
6318N
90
190
43
3
157000
107000
4000
4800
6318NR
90
190
43
3
157000
107000
4000
4800
6318VV
90
190
43
3
157000
107000
4000
6318ZZ
90
190
43
3
157000
107000
4000
6819
95
120
13
1
21200
22000
5000
6000
6819DD
95
120
13
1
21200
22000
2800
6819N
95
120
13
1
21200
22000
5000
6000
6819NR
95
120
13
1
21200
22000
5000
6000
6819VV
95
120
13
1
21200
22000
5000
6819ZZ
95
120
13
1
21200
22000
5000
6919
95
130
18
1.1
37000
33500
4800
5600
6216DDU
80
140
26
2
80000
53000
3000
6216N
80
140
26
2
80000
53000
5300
6300
6216NR
80
140
26
2
80000
53000
5300
6300
6216VV
80
140
26
2
80000
53000
5300
6216ZZ
80
140
26
2
80000
53000
5300
6316
80
170
39
2.1
135000
86500
4500
5600
6316DDU
80
170
39
2.1
135000
86500
2800
6316N
80
170
39
2.1
135000
86500
4500
5600
6316NR
80
170
39
2.1
135000
86500
4500
5600
6316VV
80
170
39
2.1
135000
86500
4500
6316ZZ
80
170
39
2.1
135000
86500
4500
6817
85
110
13
1
20600
20000
5600
6700