**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**.
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 |
|
260 |
400 |
65 |
4 |
4 |
645.0 |
1000.0 |
2100 |
2600 |
|
300 |
460 |
74 |
4 |
4 |
885 |
1400 |
1800 |
2200 |
|
300 |
460 |
74 |
4 |
4 |
885.0 |
1400.0 |
1800 |
2200 |
|
320 |
480 |
74 |
4 |
4 |
905 |
1470 |
1800 |
2100 |
|
320 |
480 |
74 |
4 |
4 |
905.0 |
1470.0 |
1800 |
2100 |
|
340 |
520 |
82 |
5 |
5 |
1080 |
1740 |
1600 |
2000 |
|
340 |
520 |
82 |
5 |
5 |
1080.0 |
1740.0 |
1600 |
2000 |
|
190 |
290 |
46 |
2.1 |
2.1 |
415 |
535 |
3200 |
4000 |
|
360 |
540 |
82 |
5 |
5 |
1110 |
1830 |
1600 |
1900 |
|
190 |
290 |
46 |
2.1 |
2.1 |
415.0 |
535.0 |
3200 |
4000 |
|
360 |
540 |
82 |
5 |
5 |
1110.0 |
1830.0 |
1600 |
1900 |
|
200 |
310 |
51 |
2.1 |
2.1 |
450 |
580 |
3000 |
3700 |
|
400 |
600 |
90 |
5 |
5 |
1360 |
2280 |
1400 |
1700 |
|
200 |
310 |
51 |
2.1 |
2.1 |
450.0 |
580.0 |
3000 |
3700 |
|
400 |
600 |
90 |
5 |
5 |
1360.0 |
2280.0 |
1400 |
1700 |
|
220 |
340 |
56 |
3 |
3 |
575 |
750 |
2500 |
3000 |
|
220 |
340 |
56 |
3 |
3 |
575.0 |
750.0 |
2500 |
3000 |
|
240 |
360 |
56 |
3 |
3 |
605 |
820 |
2300 |
2800 |
|
240 |
360 |
56 |
3 |
3 |
605.0 |
820.0 |
2300 |
2800 |
|
260 |
400 |
65 |
4 |
4 |
645 |
1000 |
2100 |
2600 |