**NSK Super Precision Bearings: Engineered for Unmatched Accuracy and Performance**
In the world of high-precision motion and control, NSK’s **Super Precision Bearings** stand as a benchmark for reliability, rigidity, and ultra-low friction performance. Among these, the **Super Precision Cylindrical Roller Bearings** and **Double Row Cylindrical Roller Bearings** are engineered to meet the most demanding applications—delivering exceptional rotational accuracy, high load capacity, and extended service life in industries where precision is non-negotiable.
### **Technical Excellence and Design Innovations**
NSK’s **Super Precision Cylindrical Roller Bearings** are designed with optimized roller profiles, precision-ground raceways, and advanced materials to minimize vibration, heat generation, and wear. These bearings feature:
– **Ultra-High Precision (P4, P2, or higher grades)** – Ensuring minimal runout and consistent performance in high-speed applications.
– **Enhanced Load Capacity** – Radial load handling is maximized through superior roller-to-raceway contact, making them ideal for heavy-duty machining and automation.
– **Low Friction & High-Speed Capability** – Special cage designs (e.g., brass or polymer cages) reduce friction, allowing for smoother operation at elevated speeds.
For applications requiring even greater rigidity and load distribution, NSK’s **Double Row Cylindrical Roller Bearings** provide:
– **Increased Radial Stiffness** – Two rows of rollers enhance stability, critical for machine tool spindles and high-precision gearboxes.
– **Optimized Internal Geometry** – Precision alignment minimizes deflection under heavy loads, maintaining accuracy in dynamic conditions.
– **Sealed or Open Configurations** – Options for grease lubrication or integrated sealing solutions extend maintenance intervals in harsh environments.
### **Performance Advantages for Critical Applications**
NSK’s super precision cylindrical roller bearings excel in environments where even micron-level deviations can impact performance. Key advantages include:
– **Extended Service Life** – Advanced heat treatment and surface finishing techniques reduce wear, ensuring longevity even under continuous high-load operation.
– **Reduced Noise & Vibration** – Critical for semiconductor manufacturing, medical imaging equipment, and high-end robotics.
– **Thermal Stability** – Engineered to maintain dimensional stability under thermal fluctuations, crucial for CNC machining and aerospace components.
### **Typical Applications Across Industries**
These bearings are indispensable in sectors demanding the highest levels of precision and durability:
– **Industrial Machinery** – Machine tool spindles, robotic arms, and printing presses rely on their rigidity and speed capabilities.
– **Automotive Systems** – High-performance transmissions, electric vehicle (EV) drivetrains, and turbochargers benefit from their low friction and high-load support.
– **Precision Equipment** – Medical imaging devices, optical alignment systems, and semiconductor wafer handling require the near-zero runout provided by NSK’s super precision designs.
By combining cutting-edge engineering with decades of expertise, NSK’s **Super Precision Cylindrical Roller Bearings** and **Double Row Cylindrical Roller Bearings** set the standard for motion control in the most demanding applications—ensuring efficiency, accuracy, and reliability where it matters most.
Designations | Nominal Dimensions | Basic Load Ratings | Speeds Limiting Speeds |
|||||
---|---|---|---|---|---|---|---|---|
d mm |
D mm |
B mm |
r(min.) mm |
Cr kN |
C0r kN |
Grease min-1 |
Oil (Oil-air) min-1 |
|
340 |
460 |
118 |
3 |
1350 |
3400 |
1700 |
2000 |
|
380 |
520 |
140 |
4 |
1880 |
4600 |
1500 |
1800 |
|
300 |
420 |
118 |
3 |
1230 |
2870 |
1800 |
2300 |
|
340 |
520 |
133 |
5 |
1670 |
3300 |
1600 |
1900 |
|
300 |
420 |
118 |
3 |
1230 |
2870 |
1800 |
2300 |
|
340 |
520 |
133 |
5 |
1670 |
3300 |
1600 |
1900 |
|
300 |
460 |
118 |
4 |
1290 |
2460 |
1800 |
2100 |
|
360 |
480 |
90 |
3 |
930 |
2130 |
1600 |
1900 |
|
300 |
460 |
118 |
4 |
1290 |
2460 |
1800 |
2100 |
|
360 |
480 |
90 |
3 |
930 |
2130 |
1600 |
1900 |
|
200 |
280 |
60 |
2.1 |
480 |
815 |
3200 |
3800 |
|
240 |
320 |
60 |
2.1 |
525 |
975 |
2400 |
2900 |
|
280 |
380 |
75 |
2.1 |
695 |
1460 |
2000 |
2500 |
|
200 |
280 |
60 |
2.1 |
480 |
815 |
3200 |
3800 |
|
240 |
320 |
60 |
2.1 |
525 |
975 |
2400 |
2900 |
|
280 |
380 |
75 |
2.1 |
695 |
1460 |
2000 |
2500 |
|
200 |
280 |
80 |
2.1 |
655 |
1220 |
3200 |
3800 |
|
240 |
320 |
80 |
2.1 |
720 |
1450 |
2400 |
2900 |
|
280 |
380 |
100 |
2.1 |
960 |
2230 |
2000 |
2500 |
|
200 |
280 |
80 |
2.1 |
655 |
1220 |
3200 |
3800 |