This series represents a highly versatile and widely utilized lightweight category within the realm of deep groove ball bearings. The product line offers a diverse range of models—spanning from the 6900 to the 6908 series—capable of accommodating steel balls of larger diameters.
Bearing Features
This design configuration serves to enhance both the dynamic and static load ratings of the bearing, while requiring only a marginal increase in installation space. By incorporating proven sealing mechanisms—such as open configurations, dust shields, or contact seals—the bearings effectively prevent lubricant leakage and block the ingress of external contaminants, thereby ensuring long-term, stable operation even under demanding working conditions. As a standardized, general-purpose series, it features high interchangeability, facilitating ease of maintenance and component replacement during the equipment's service life. Consequently, this series stands as the preferred component choice for a wide array of applications, including various power tools, household appliances (such as vacuum cleaners and washing machines), automotive components, small-to-medium-scale mechanical transmission systems, and textile machinery.
Technical Specifications
| Bearing Reference | Boundary Diameters | Basic Dynamic | Basic Static | Limiting Speeds | |||||||||
| Flange | Open | Shield | seal | d(mm) | D(mm) | Df(mm) | B/B1(mm) | Bf(mm) | rsmin(mm) | Cr(kN) | Cor(kN) | Grease | Oil |
| F | 6900 | ZZ | 2RS | 10 | 22 | 25 | 6 | 1.5 | 0.3 | 2.7 | 1.27 | 2.1 | 2.3 |
| F | 6901 | ZZ | 2RS | 12 | 24 | 26.5 | 6 | 1.5 | 0.3 | 2.88 | 1.47 | 1.8 | 2.1 |
| F | 6902 | ZZ | 2RS | 15 | 28 | 30.5 | 7 | 1.5 | 0.3 | 4.32 | 2.26 | 1.5 | 1.7 |
| F | 6903 | ZZ | 2RS | 17 | 30 | 32.5 | 7 | 1.5 | 0.3 | 4.59 | 2.57 | 1.4 | 1.6 |
| F | 6904 | ZZ | 2RS | 20 | 37 | 40 | 9 | 2 | 0.3 | 6.38 | 3.68 | 1.2 | 1.3 |
| F | 6905 | ZZ | 2RS | 25 | 42 | 45 | 9 | 2 | 0.3 | 7 | 4.54 | 1 | 1.1 |
| F | 6906 | ZZ | 2RS | 30 | 47 | 50 | 9 | 2 | 0.3 | 7.24 | 5.01 | 0.9 | 1 |

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