**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 |
|
170 |
230 |
45 |
2 |
320 |
550 |
3800 |
4500 |
|
190 |
260 |
52 |
2 |
395 |
680 |
3400 |
4000 |
|
150 |
225 |
56 |
2.1 |
229 |
294 |
4800 |
6300 |
|
170 |
230 |
60 |
2 |
435 |
805 |
3800 |
4500 |
|
190 |
260 |
69 |
2 |
555 |
1060 |
3400 |
4000 |
|
150 |
225 |
56 |
2.1 |
229 |
294 |
4800 |
6300 |
|
170 |
230 |
60 |
2 |
435 |
805 |
3800 |
4500 |
|
190 |
260 |
69 |
2 |
555 |
1060 |
3400 |
4000 |
|
160 |
220 |
45 |
2 |
310 |
520 |
4000 |
4800 |
|
170 |
230 |
60 |
2 |
435 |
805 |
3800 |
4500 |
|
160 |
220 |
45 |
2 |
310 |
520 |
4000 |
4800 |
|
170 |
230 |
60 |
2 |
435 |
805 |
3800 |
4500 |
|
160 |
220 |
60 |
2 |
420 |
760 |
4000 |
4800 |
|
170 |
260 |
67 |
2.1 |
520 |
805 |
3500 |
4200 |
|
160 |
220 |
60 |
2 |
420 |
760 |
4000 |
4800 |
|
170 |
260 |
67 |
2.1 |
520 |
805 |
3500 |
4200 |
|
160 |
220 |
60 |
2 |
420 |
760 |
4000 |
4800 |
|
180 |
250 |
52 |
2 |
390 |
655 |
3500 |
4200 |
|
160 |
220 |
60 |
2 |
420 |
760 |
4000 |
4800 |
|
180 |
250 |
52 |
2 |
390 |
655 |
3500 |
4200 |
|
160 |
240 |
60 |
2.1 |
430 |
660 |
3800 |
4500 |
|
180 |
250 |
69 |
2 |
550 |
1020 |
3500 |
4200 |
|
120 |
180 |
46 |
2 |
275 |
405 |
5000 |
6000 |
|
130 |
200 |
52 |
2 |
195 |
238 |
5500 |
7200 |
|