[1] 日本精工株式会社(主营轴承设计、生产等的公司)-百科
[8] nsk是哪个国家的轴承?
[5] 【型录分享】NSK轴承样本手册，高清电子版
| Model | Inner Diameter (mm) | Outer Diameter (mm) | Width (mm) | Dynamic Load (kN) | Static Load (kN) |
|---|---|---|---|---|---|
| 7208B | 40 | 80 | 18 | 38.5 | 25.5 |
| 7209B | 45 | 85 | 19 | 42.3 | 28.7 |
| 7210B | 50 | 90 | 20 | 47.1 | 32.4 |
| 7211B | 55 | 100 | 21 | 53.6 | 37.2 |
Key Features: High rigidity, 40° contact angle, optimized heat treatment, and superior lubrication retention.
NSK 7208B-7211B bearings are designed for heavy-duty applications requiring precision and durability:
Problem: Frequent bearing failures in CAT 320D excavators due to dust ingress.
Solution: Installation of NSK 7210B bearings with integrated seals extended service life by 200%.
Problem: Vibration errors in Haas VF-2 spindle.
Solution: Upgraded to NSK 7209B bearings, achieving 0.002mm runout tolerance.
Application: Komatsu PC300-6 excavator swing motors.
Results: 7208B bearings reduced downtime by 60% over 12 months.
Application: Conveyor belt drive systems.
Results: 7211B bearings increased load capacity by 35% while cutting energy use by 12%.
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