Based on a high-strength SUS440 stainless steel substrate, the S63 series features thickened inner and outer rings and larger-diameter steel balls, specifically engineered to withstand high-load and shock-load operating conditions. The deep-groove ball design, combined with the high hardenability of SUS440, minimizes the risk of plastic deformation under heavy loads, thereby ensuring sustained mechanical precision during long-term operation.
Bearing Features
Optimized control of raceway surface roughness reduces heat buildup during operation, extending the service life of the lubricant. This series is ideally suited for applications such as washing equipment and chemical processing machinery, where components must handle heavy loads while exposed to highly oxidizing environments; the chemical stability of the stainless steel effectively resists corrosion from chemical cleaning agents.
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 |
| - | S633 | ZZ | 3 | 13 | - | 5 | - | 5 | - | 0.2 | 1.3 | 0.49 | 4.1 | 4.6 |
| F | S634 | ZZ | 4 | 16 | 18 | 5 | 1 | 5 | 1 | 0.3 | 1.34 | 0.519 | 3.3 | 3.7 |
| F | S635 | ZZ | 5 | 19 | 22 | 6 | 1.5 | 6 | 1.5 | 0.3 | 2.33 | 0.892 | 2.8 | 3.1 |
| - | S636 | ZZ | 6 | 22 | - | 7 | - | 7 | - | 0.3 | 3.33 | 1.42 | 2.4 | 2.6 |
| - | S637 | ZZ | 7 | 26 | - | 9 | - | 9 | - | 0.3 | 4.57 | 1.98 | 2 | 2.2 |
| - | S638 | ZZ | 8 | 28 | - | 9 | - | 9 | - | 0.3 | 4.57 | 1.98 | 1.8 | 2.1 |
| - | S639 | ZZ | 9 | 30 | - | 10 | - | 10 | - | 0.6 | 4.66 | 2.08 | 1.7 | 1.9 |

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