Manufactured by CHG Bearing, the 603 is a precision Metric Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 3 mm bore diameter, a 9 mm outer diameter, and a 3 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.
603 - Metric Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 603 |
| Dimensions | |
| Bore Diameter (d) | 3 mm |
| Width (B) | 3 mm |
| Outer Diameter (D) | 9 mm |
| Open Width B | 3 mm |
| Radius rs min | 0.15 mm |
| Flange Df | 10.5 mm |
| Closed Width B1 | 5 mm |
| Open Flange Width Bf | 0.7 mm |
| Closed Flange Width Bf1 | 1 mm |
| Performance | |
| Dynamic Load Cr (N) | 571 N |
| Static Load C0r (N) | 189 N |
| Grease Speed (x1000 rpm) | 56 x1000 rpm |
| Oil Speed (x1000 rpm) | 67 x1000 rpm |
| Design Configurations | |
| Open Model | 603 |
| Flanged Open Model | F603 |
| Shielded Model | 603ZZ |
| Flanged Shielded Model | F603ZZ |
| 2RS | - |
| 2RU | - |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | W |
| Ball Qty. Z | 6 |
| Ball Size Dw | 1.588 mm |
| Shielded Weight (g) | 1.03 g |
| Flanged Shielded Weight (g) | 1.61 g |
| Open Weight (g) | 0.84 g |
| Flanged Open Weight (g) | 0.96 g |
603 9 mm 3 mm 3 mm Frequently Asked Questions about 603 Metric Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
In its sealed configuration (Open Type), CHG Bearing pre-charges 603 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.
As standard production, CHG Bearing subjects 603 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
To safeguard CHG Bearing 603 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (3 mm x 9 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Absolutely. The CHG Bearing 603 Metric Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 603, FAG 603, NSK 603. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
