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
6319N
95
200
45
3
168000
119000
3400
4300
6319NR
95
200
45
3
168000
119000
3400
4300
6319VV
95
200
45
3
168000
119000
3400
6319ZZ
95
200
45
3
168000
119000
3400
6820
100
125
13
1
21500
23000
4800
5600
6820DD
100
125
13
1
21500
23000
2800
6820N
100
125
13
1
21500
23000
4800
5600
6820NR
100
125
13
1
21500
23000
4800
5600
6820VV
100
125
13
1
21500
23000
4800
6820ZZ
100
125
13
1
21500
23000
4800
6920
100
140
20
1.1
47000
42000
4500
5300
6920DDU
100
140
20
1.1
47000
42000
2600
6920N
100
140
20
1.1
47000
42000
4500
5300
6920NR
100
140
20
1.1
47000
42000
4500
5300
6920VV
100
140
20
1.1
47000
42000
4500
6920ZZ
100
140
20
1.1
47000
42000
4500
16020
100
150
16
1
46500
42000
4300
5300
6020
100
150
24
1.5
66000
54000
5000
6000
6020DDU
100
150
24
1.5
66000
54000
2600
6020N
100
150
24
1.5
66000
54000
5000
6000
6317VV
85
180
41
3
146000
97000
4300
6317ZZ
85
180
41
3
146000
97000
4300
6818
90
115
13
1
20900
21000
5300
6300
6818DDU
90
115
13
1
20900
21000
3000