S09003AS0 bearings ( 90 mm x 96 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 Robot joints, aerospace, semiconductor equipment, medical instruments and optoelectronic turntables.

| Part Number | S09003AS0 |
| Reference From | Kaydon S09003AS0 |
| Manufacturer Part Code | S09003AS0 |
| Series | Angular Contact Type A |
| 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 | Angular contact ball bearing (type A) |
| Seal | open |
| Cage | Without |
| Type | A = Angular Contact |
| α Contact angle [°] | 30 ° |
| Unit of measurement | Metric |
| Precision | Precision Class 1 (ABEC 1F) standard |
| Ring | AISI 440C stainless steel |
| Contact type | Normal contact (two-point contact) |
| Races/Balls Material | S = AISI 440C stainless steel rings and balls, no seals (open) |
| Weight [lb] | 0 |
| d φ Inside [inch] | 3.543 |
| D Φ Outside [inch] | 3.780 |
| B Width [inch] | 0.098 |
| H Radial cross section [inch] | 0.118 |
| L1 Land Dia. [inch] | 3.630 |
| L2 Land Dia. [inch] | 3.693 |
| F chamfer [inch] | 0.010 |
| Fa Loading Limits Thrust [N] | 949 |
The S09003AS0 Thin-section angular contact ball bearings mainly consist of a thin-walled inner ring, a thin-walled outer ring, steel balls, and a cage. Their cross-sectional dimensions are constant and extremely thin, with contact angles typically of 15°, 25°, or 30°, making them suitable for space-constrained installations.
Thin-section angular contact ball bearings utilize a thin-walled, constant cross-section design, resulting in lightweight construction and a small footprint, effectively reducing the overall weight of equipment. They can simultaneously withstand radial and axial loads, possessing high rigidity, high-speed capability, and good positioning accuracy, and are easy to install.















