This series encompasses a range of common miniature imperial-sized models, all manufactured from SUS304 stainless steel to ensure high standards of hygiene and corrosion resistance. Featuring a symmetrical internal design, the bearings can withstand light thrust loads from any direction. The series spans various size categories—from ultra-miniature to standard miniature—meeting the requirements for tiered transmission systems within complex mechanical assemblies.
Bearing Features
Thanks to the excellent thermal processing and welding characteristics of 304 stainless steel, the material offers superior dimensional stability, ensuring minimal size variation during temperature fluctuations in operation. These bearings are frequently used in applications requiring frequent washdowns, such as beverage filling lines and pharmaceutical packaging machinery, effectively resisting corrosion caused by water exposure.
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 | SR144 | ZZ | 0.125 | 3.175 | 0.25 | 6.35 | 0.296 | 7.518 | 0.0938 | 2.381 | 0.023 | 0.584 | 0.1094 | 2.778 | 0.031 | 0.787 | 0.0039 | 0.1 | 0.314 | 0.108 | 6.9 | 7.8 |
| F | SR2-5 | ZZ | 0.125 | 3.175 | 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 | 0.559 | 0.176 | 5.9 | 6.7 |
| F | SR2-6 | ZZ | 0.125 | 3.175 | 0.375 | 9.525 | 0.422 | 10.719 | 0.1094 | 2.778 | 0.023 | 0.584 | 0.1406 | 3.572 | 0.031 | 0.787 | 0.0039 | 0.1 | 0.637 | 0.225 | 5.2 | 5.8 |
| F | SR2 | ZZ | 0.125 | 3.175 | 0.375 | 9.525 | 0.44 | 11.176 | 0.1562 | 3.969 | 0.03 | 0.762 | 0.1562 | 3.969 | 0.03 | 0.762 | 0.0118 | 0.3 | 0.627 | 0.216 | 5.2 | 5.8 |
| - | SR2A | ZZ | 0.125 | 3.175 | 0.5 | 12.7 | - | - | 0.1719 | 4.366 | - | - | 0.1719 | 4.366 | - | - | 0.0118 | 0.3 | 0.637 | 0.225 | 4.2 | 4.7 |

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