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
6236ZZS
180
320
52
4
250000
241000
1700
6336
180
380
75
4
390000
405000
1500
1800
6838
190
240
24
1.5
80500
93500
2200
2600
6838VV
190
240
24
1.5
80500
93500
2200
6938
190
260
33
2
124000
127000
2200
2600
16038
190
290
31
2
164000
168000
2000
2400
6038
190
290
46
2.1
207000
201000
2000
2400
6038ZZS
190
290
46
2.1
207000
201000
2000
6238
190
340
55
4
280000
282000
1600
2000
6238ZZS
190
340
55
4
280000
282000
1600
6338
190
400
78
5
390000
415000
1400
1700
6840
200
250
24
1.5
81500
98000
2200
2600
6928VV
140
190
24
1.5
73500
72000
3200
6928ZZS
140
190
24
1.5
73500
72000
3200
16028
140
210
22
1.1
85500
82500
2800
3400
6028
140
210
33
2
121000
109000
2800
3400
6028DDU
140
210
33
2
121000
109000
1800
6028ZZ
140
210
33
2
121000
109000
2800
6228
140
250
42
3
183000
150000
2200
2800
6228DDU
140
250
42
3
183000
150000
1700
6228ZZS
140
250
42
3
183000
150000
2200
6328
140
300
62
4
278000
246000
2000
2400
6328ZZS
140
300
62
4
278000
246000
2000
6830
150
190
20
1.1
52500
58500
3200
3800