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
6876
380
480
46
2.1
261000
375000
1000
1200
6976
380
520
65
4
355000
510000
950
1200
6076
380
560
82
5
505000
725000
900
1100
6880
400
500
46
2.1
265000
390000
950
1200
6980
400
540
65
4
365000
540000
900
1100
6080
400
600
90
5
560000
825000
850
1000
6884
420
520
46
2.1
269000
410000
900
1100
6984
420
560
65
4
375000
570000
900
1100
6084
420
620
90
5
585000
895000
800
1000
6888
440
540
46
2.1
273000
425000
900
1100
6988
440
600
74
4
435000
680000
800
1000
6088
440
650
94
6
605000
965000
750
900
6892
460
580
56
3
340000
550000
800
1000
6992
460
620
74
4
450000
720000
800
950
6092
460
680
100
6
665000
1080000
710
850
6896
480
600
56
3
350000
575000
800
950
6996
480
650
78
5
495000
815000
750
900
6096
480
700
100
6
665000
1090000
710
850
68/500
500
620
56
3
355000
600000
750
900
69/500
500
670
78
5
505000
865000
710
850
60/500
500
720
100
6
690000
1170000
670
800
68/530
530
650
56
3
360000
625000
710
850
69/530
530
710
82
5
500000
870000
670
800
60/530
530
780
112
6
745000
1300000
600
750