Single-Row Cylindrical Roller Bearings

**Introduction to NSK Super Precision Cylindrical Roller Bearings**

In high-performance industrial and precision applications, where extreme accuracy, rigidity, and reliability are paramount, **NSK Super Precision Cylindrical Roller Bearings** stand out as a critical solution for demanding motion control challenges. Designed for applications requiring ultra-precise rotational performance, these bearings deliver exceptional load capacity, minimal friction, and outstanding dimensional stability—even under high-speed or heavy-load conditions.

### **Technical Features & Performance Advantages**

NSK’s **Single Row Super Precision Cylindrical Roller Bearings** are engineered with advanced materials, precision grinding techniques, and optimized internal geometries to meet the stringent requirements of modern machinery. Key features include:

– **Ultra-High Precision:** Manufactured to **ABEC 7, ABEC 9 (P4, P2)** tolerances, these bearings ensure minimal runout and vibration, making them ideal for applications where micron-level accuracy is essential.
– **Enhanced Load Capacity:** The optimized roller profile and high-grade steel construction provide superior **radial load support**, accommodating both high dynamic and static loads without compromising performance.
– **Low Friction & High-Speed Capability:** Advanced cage designs (such as machined brass or polymer cages) reduce friction and heat generation, enabling stable operation at **high rotational speeds (dn values exceeding 1 million)**.
– **Rigidity & Stability:** Precision-ground raceways and rollers enhance stiffness, minimizing elastic deformation under load—critical for machine tools, robotics, and aerospace systems.
– **Long Service Life:** NSK’s proprietary heat treatment and surface finishing technologies improve wear resistance and fatigue life, even in harsh operating environments.

### **Typical Applications**

Due to their unmatched precision and durability, NSK Super Precision Cylindrical Roller Bearings are widely used in industries where failure is not an option:

– **Machine Tools:** Spindles, rotary tables, and linear guide systems in CNC machining centers rely on these bearings for **high rigidity and positional accuracy** during heavy cutting operations.
– **Industrial Robotics:** Precision joints and articulated arms benefit from their **low torque and high responsiveness**, ensuring smooth, repeatable motion in automated assembly lines.
– **Aerospace & Defense:** Critical components in jet engine gearboxes, radar systems, and satellite positioning mechanisms demand bearings that can withstand **high speeds and extreme temperatures** without performance degradation.
– **Automotive Systems:** High-performance transmissions, turbochargers, and electric vehicle (EV) drivetrains utilize these bearings for **efficiency and durability under variable loads**.
– **Medical & Semiconductor Equipment:** Precision imaging devices, wafer handling robots, and laboratory automation systems require **contamination-resistant, low-vibration bearings** for flawless operation.

### **Conclusion**

NSK’s **Super Precision Single Row Cylindrical Roller Bearings** represent the pinnacle of motion control engineering, combining **ultra-tight tolerances, robust construction, and optimized dynamics** to meet the needs of the most demanding applications. Whether enhancing the accuracy of industrial machinery, extending the lifespan of automotive systems, or enabling breakthrough innovations in precision equipment, these bearings deliver **reliability, efficiency, and performance at the highest level**.

For engineers and designers seeking uncompromising quality, NSK’s precision bearings provide the **foundation for smoother, faster, and more precise motion control solutions**.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
B
mm
r(min.)
mm
r1(min.)
mm
Cr
kN
C0r
kN
Grease
min-1
Oil (Oil-air)
min-1
N1052KR
260
400
65
4
4
645.0
1000.0
2100
2600
N1060
300
460
74
4
4
885
1400
1800
2200
N1060KR
300
460
74
4
4
885.0
1400.0
1800
2200
N1064
320
480
74
4
4
905
1470
1800
2100
N1064KR
320
480
74
4
4
905.0
1470.0
1800
2100
N1068
340
520
82
5
5
1080
1740
1600
2000
N1068KR
340
520
82
5
5
1080.0
1740.0
1600
2000
N1038
190
290
46
2.1
2.1
415
535
3200
4000
N1072
360
540
82
5
5
1110
1830
1600
1900
N1038KR
190
290
46
2.1
2.1
415.0
535.0
3200
4000
N1072KR
360
540
82
5
5
1110.0
1830.0
1600
1900
N1040MR
200
310
51
2.1
2.1
450
580
3000
3700
N1080
400
600
90
5
5
1360
2280
1400
1700
N1040MRKR
200
310
51
2.1
2.1
450.0
580.0
3000
3700
N1080KR
400
600
90
5
5
1360.0
2280.0
1400
1700
N1044MR
220
340
56
3
3
575
750
2500
3000
N1044MRKR
220
340
56
3
3
575.0
750.0
2500
3000
N1048
240
360
56
3
3
605
820
2300
2800
N1048KR
240
360
56
3
3
605.0
820.0
2300
2800
N1052
260
400
65
4
4
645
1000
2100
2600