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
6314ZZ
70
150
35
2.1
115000
68000
5300
6815
75
95
10
0.6
13800
13900
6300
7500
6815DDU
75
95
10
0.6
13800
13900
3600
6815N
75
95
10
0.6
13800
13900
6300
7500
6815NR
75
95
10
0.6
13800
13900
6300
7500
6815VV
75
95
10
0.6
13800
13900
6300
6815ZZ
75
95
10
0.6
13800
13900
6300
6915
75
105
16
1
26800
22600
6000
7100
6915DDU
75
105
16
1
26800
22600
3400
6915N
75
105
16
1
26800
22600
6000
7100
6915NR
75
105
16
1
26800
22600
6000
7100
6915VV
75
105
16
1
26800
22600
6000
6212ZZ
60
110
22
1.5
57500
36000
6700
6312
60
130
31
2.1
90000
52000
6000
7100
6312DDU
60
130
31
2.1
90000
52000
3600
6312N
60
130
31
2.1
90000
52000
6000
7100
6312NR
60
130
31
2.1
90000
52000
6000
7100
6312VV
60
130
31
2.1
90000
52000
6000
6312ZZ
60
130
31
2.1
90000
52000
6000
6813
65
85
10
0.6
13100
12100
7500
8500
6813DD
65
85
10
0.6
13100
12100
4000
6813N
65
85
10
0.6
13100
12100
7500
8500
6813NR
65
85
10
0.6
13100
12100
7500
8500
6813VV
65
85
10
0.6
13100
12100
7500