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.

MORE +
CLOSE +
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
6856
280
350
33
2
146000
191000
1500
1700
6956
280
380
46
2.1
230000
272000
1400
1700
16056
280
420
44
3
267000
330000
1300
1600
6344
220
460
88
5
450000
520000
1200
1500
6056
280
420
65
4
330000
410000
1300
1600
6848
240
300
28
2
108000
137000
1700
2000
6256
280
500
80
5
440000
550000
1000
1300
6940
200
280
38
2.1
158000
158000
2000
2400
6940ZZS
200
280
38
2.1
158000
158000
2000
16040
200
310
34
2
177000
180000
1900
2200
6040
200
310
51
2.1
228000
226000
1900
2200
6040ZZS
200
310
51
2.1
228000
226000
1900
6240
200
360
58
4
296000
310000
1500
1800
6240ZZS
200
360
58
4
296000
310000
1500
6340
200
420
80
5
415000
445000
1300
1600
6844
220
270
24
1.5
84000
107000
1900
2400
6944
220
300
38
2.1
161000
169000
1800
2200
16044
220
340
37
2.1
198000
217000
1600
2000
6044
220
340
56
3
259000
271000
1700
2000
6044ZZS
220
340
56
3
259000
271000
1700
6834DDU
170
215
22
1.1
66000
75000
1600
16036
180
280
31
2
159000
157000
2000
2400
6840
200
250
24
1.5
81500
98000
2200
2600
6834VV
170
215
22
1.1
66000
75000
2600