This product series is specifically designed to address requirements for limited space and lightweight construction. Crafted from high-quality bearing steel and manufactured using precision machining processes, these products ensure excellent operational performance even within an extremely thin cross-section. A defining characteristic is the minimal difference between the inner and outer diameters, making them ideally suited for installation in mechanical assemblies where structural compactness and radial space conservation are critical.
Bearing Features
The use of premium bearing steel, subjected to rigorous heat treatment, endows these bearings with exceptional hardness and wear resistance, thereby effectively extending their service life under light-load conditions. Furthermore, the design features—including smaller rolling elements and a lightweight cage—result in extremely low frictional torque during operation, enabling support for high rotational speeds while minimizing heat generation. These bearings are widely utilized in precision applications with strict constraints on size and weight, such as miniature motors, medical devices, optical instruments, robotic joints, precision office equipment, and electronic scanning systems.
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 | 6700 | ZZ | 2RS | 10 | 15 | 16.5 | 3/4 | 0.8 | 0.15 | 0.853 | 0.431 | 2.6 | 3 |
| F | 6701 | ZZ | 2RS | 12 | 18 | 19.5 | 4 | 0.8 | 0.2 | 0.921 | 0.529 | 2.2 | 2.5 |
| F | 6702 | ZZ | 2RS | 15 | 21 | 22.5 | 4 | 0.8 | 0.2 | 0.941 | 0.578 | 1.8 | 2.1 |
| F | 6703 | ZZ | 2RS | 17 | 23 | 24.5 | 4 | 0.8 | 0.2 | 1 | 0.657 | 1.7 | 1.9 |
| F | 6704 | ZZ | 2RS | 20 | 27 | 28.5 | 4 | 0.8 | 0.2 | 1.04 | 0.725 | 1.4 | 1.6 |
| F | 6705 | - | 2RS | 25 | 32 | 34 | 4 | 1 | 0.2 | 1.09 | 0.843 | 1.2 | 1.3 |
| F | 6706 | - | 2RS | 30 | 37 | 39 | 4 | 1 | 0.2 | 1.15 | 0.951 | 1 | 1.1 |

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