This product emphasizes smooth, continuous motion in miniature imperial-series applications. The inclusion of a flange eliminates the risk of the bearing rotating within its housing (outer ring creep), thereby ensuring geometric centering stability during long-term operation.
Bearing Features
The FR1-5 is commonly used in the drive systems of precision optical instruments and measuring equipment. The high modulus of the bearing steel ensures minimal deformation under load—a critical factor for maintaining measurement accuracy. A refined polishing process minimizes debris generation from rolling contact, extending the maintenance-free service life. Additionally, the standardized imperial design facilitates component replacement and maintenance for internationally utilized equipment.
Technical Specifications
| Bearing Reference | Boundary Diameters | Basic Dynamic | Basic Static | Limiting Speeds | ||||||||||||||||||
| Flange | Open | Shield | d inch |
d mm |
D inch |
D mm |
Df inch |
Df mm |
B inch |
B mm |
Bf inch |
Bf mm |
B1 inch |
B1 mm |
Bf1 inch |
Bf1 mm |
rsmin inch |
rsmin mm |
Cr kN |
Cor kN |
Grease | Oil |
| F | FR1-5 | ZZ | 0.0938 | 2.381 | 0.3125 | 7.938 | 0.359 | 9.119 | 0.1094 | 2.778 | 0.023 | 0.584 | 0.1406 | 3.572 | 0.031 | 0.787 | 0.0039 | 0.1 | 0.549 | 0.176 | 6.4 | 7.2 |

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