Manufactured by CHG Bearing, the 6303H is a precision Metric Stainless Steel Deep Groove Ball Bearings. Key dimensional parameters include a 17 mm bore diameter, a 47 mm outer diameter, and a 14 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.
6303H - Metric Stainless Steel Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 6303H |
| SAE52100 Option | No |
| Dimensions | |
| Bore Diameter (d) | 17 mm |
| Width (B) | 14 mm |
| Outer Diameter (D) | 47 mm |
| Radius rs min | 1 mm |
| Performance | |
| Dynamic Load Cr (N) | 11550 N |
| Static Load C0r (N) | 5330 N |
| Grease Speed (x1000 rpm) | 15 x1000 rpm |
| Oil Speed (x1000 rpm) | 18 x1000 rpm |
| Design Configurations | |
| Open Model | 6303H |
| ZZ Suffix | ZZ |
| 2RS Suffix | 2RS |
| 2RU Suffix | 2RU |
| TTS Suffix | - |
| Internal Design & Weight | |
| Cage Type | R,J |
| Ball Qty. Z | 7 |
| Ball Size Dw | 8.731 mm |
| Shielded Weight (g) | 115 g |
6303H 47 mm 17 mm 14 mm Frequently Asked Questions about 6303H Metric Stainless Steel Deep Groove 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 6303H with a precision bore diameter (d) of 17 mm, an outside diameter (D) of 47 mm, and a nominal ring width (B) of 14 mm. This configuration yields an effective cross-sectional wall thickness of 15.0 mm and an envelope ratio (D/d) of 2.76, delivering compact rigidity for OEM machinery housings.
In its sealed configuration (Open Type), CHG Bearing pre-charges 6303H 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.
Standard batches of CHG Bearing 6303H conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
Model 6303H is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 17 mm) and steep thermal gradients between inner and outer rings.
