Characterized by an exceptionally compact cross-section, this series is classified as a "lightweight, ultra-thin" category, designed to meet the exacting demands of modern high-tech products for attributes that are "lighter, thinner, and more precise." Even within extremely confined installation spaces, the series leverages its sophisticated structural design to deliver stable and efficient rotational support.
Bearing Features
In terms of manufacturing, this series adheres to precision standards measured in microns. Despite its diminutive physical profile, it makes no compromises regarding rotational accuracy, dynamic balance, or low-noise performance. By incorporating specialized lubricants and precision sealing mechanisms, these bearings achieve long-lasting lubrication while simultaneously offering superior dust resistance—attributes that further enhance their adaptability within precision-critical environments.
This product series represents an ideal choice for cutting-edge applications such as smart wearable devices, precision sensors, micro-robots, and model aircraft. In smart devices, their ultra-light weight contributes to reduced overall power consumption and enhanced response speeds; in precision sensors, their exceptionally high rotational accuracy ensures the fidelity of signal acquisition.
Technical Specifications
| Bearing Reference | Boundary Diameters | Basic Dynamic | Basic Static | Limiting Speeds | ||||||||||
| Flange | Open | Shield | d mm |
D mm |
Df mm |
B mm |
Bf mm |
B1 mm |
Bf1 mm |
rsmin mm |
Cr(kN) | Cor(kN) | Grease | Oil |
| F | 691 | - | 1 | 4 | 5 | 1.6 | 0.5 | - | - | 0.1 | 0.137 | 0.039 | 13.2 | 14.8 |
| F | 692 | ZZ | 2 | 6 | 7.5 | 2.3 | 0.6 | 3 | 0.8 | 0.15 | 0.333 | 0.098 | 8.3 | 9.3 |
| F | 693 | ZZ | 3 | 8 | 9.5 | 3 | 0.7 | 4 | 0.9 | 0.15 | 0.559 | 0.176 | 6 | 6.7 |
| F | 694 | ZZ | 4 | 11 | 12.5 | 4 | 1 | 4 | 1 | 0.15 | 0.96 | 0.353 | 4.4 | 4.9 |
| F | 695 | ZZ | 5 | 13 | 15 | 4 | 1 | 4 | 1 | 0.2 | 1.08 | 0.431 | 3.7 | 4.1 |
| F | 696 | ZZ | 6 | 15 | 17 | 5 | 1.2 | 5 | 1.2 | 0.2 | 1.34 | 0.519 | 3.1 | 3.5 |
| F | 697 | ZZ | 7 | 17 | 19 | 5 | 1.2 | 5 | 1.2 | 0.3 | 1.61 | 0.715 | 2.8 | 3.1 |
| F | 698 | ZZ | 8 | 19 | 22 | 6 | 1.5 | 6 | 1.5 | 0.3 | 2.23 | 0.921 | 2.4 | 2.7 |
| F | 699 | ZZ | 9 | 20 | 23 | 6 | 1.5 | 6 | 1.5 | 0.3 | 2.47 | 1.08 | 2.3 | 2.6 |

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