Manufactured by CHG Bearing, the HKS12003AS0 is a precision Super Thin Section Angular Contact Ball Bearings. Key dimensional parameters include a 120 mm bore diameter, a 126 mm outer diameter, and a 2.5 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
HKS12003AS0 - Super Thin Section Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | HKS12003AS0 |
| Separator | Full complement or 1/16 in spacer balls |
| Characteristics | |
| Bearing Type | Angular contact ball bearing |
| Dimensions | |
| Bore Diameter (d) | 120 mm |
| Width (B) | 2.5 mm |
| Outer Diameter (D) | 126 mm |
| Radial Cross Section H | 3 mm |
| Inner Ring Land Diameter L1 / d1 | 122.2 mm |
| Outer Ring Land Diameter L2 / D1 | 123.8 mm |
| Maximum Shaft/Housing Fillet Radius F | 0.25 mm |
| Performance | |
| Dynamic Radial Rating Ck (N) | 863 N |
| Static Radial Rating C0 (N) | 1290 N |
| Thrust Loading Limit Fa (N) | 823 N |
| Material | |
| Material | stainless steel |
| Reference Data | |
| Mass (g) | 18 g |
HKS12003AS0 126 mm 120 mm 2.5 mm Frequently Asked Questions about HKS12003AS0 Super Thin Section Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies HKS12003AS0 with a precision bore diameter (d) of 120 mm, an outside diameter (D) of 126 mm, and a nominal ring width (B) of 2.5 mm. This configuration yields an effective cross-sectional wall thickness of 3.0 mm and an envelope ratio (D/d) of 1.05, delivering compact rigidity for OEM machinery housings.
In its sealed configuration (Open Type), CHG Bearing pre-charges HKS12003AS0 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
Beyond standard alloy steel, CHG Bearing can customize the HKS12003AS0 Super Thin Section Angular Contact Ball Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
To extend the trouble-free lifespan of CHG Bearing HKS12003AS0, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
