S03503XS0 bearings ( 35 mm x 41 mm x 2.5 mm) have the advantages of Extremely compact, lightweight design, composite load-bearing capacity, high rigidity, and flexible installation, and are therefore widely used in the Robotics, aerospace, semiconductor equipment, medical instruments and optoelectronic turntables.

| Part Number | S03503XS0 |
| Reference From | Kaydon S03503XS0 |
| Manufacturer Part Code | S03503XS0 |
| Series | 4-Point Contact Type X |
| Separator | S = Helical coil spring, stainless steel separator |
| Thin section bearings type | ULTRA-SLIM Series Bearings |
| Balls | Full complement or ball spacer ball 1/16" (inch) |
| Rolling bearing type | Four-point contact ball bearing (type X) |
| Seal | open |
| Cage | Without |
| Type | X = Four-Point Contact |
| α Contact angle [°] | 30 ° |
| Unit of measurement | Metric |
| Precision | Precision Class 1 (ABEC 1F) standard |
| Ring | AISI 440C stainless steel |
| Contact type | Four-point contact |
| Races/Balls Material | S = AISI 440C stainless steel rings and balls, no seals (open) |
| Weight [lb] | 0 |
| d φ Inside [inch] | 1.378 |
| D Φ Outside [inch] | 1.614 |
| B Width [inch] | 0.098 |
| H Radial cross section [inch] | 0.118 |
| L1 Land Dia. [inch] | 1.465 |
| L2 Land Dia. [inch] | 1.528 |
| F chamfer [inch] | 0.010 |
| Fa Loading Limits Thrust [N] | 1036 |
| FM Loading Limits Moment [N-m] | 7.9 |
The S03503XS0 Thin-section four-point contact ball bearings are mainly composed of a thin-walled inner ring, a thin-walled outer ring, steel balls, and a cage. The raceway has a Gothic arch shape, and the steel balls form four-point contact with the inner and outer rings. The cross-sectional dimensions are constant and extremely thin.
Thin-section four-point contact ball bearings utilize a thin-walled constant cross-section design, resulting in lightweight construction and a small footprint. A single bearing can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments. They possess high rigidity, high-speed capability, and are easy to install, making them a viable replacement for traditional combined bearings.















