Manufactured by CHG Bearing, the 6903 is a precision Metric Super-Thin Deep Groove Ball Bearings. Key dimensional parameters include a 17 mm bore diameter, a 30 mm outer diameter, and a 7 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.
6903 - Metric Super-Thin Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 6903 |
| Dimensions | |
| Bore Diameter (d) | 17 mm |
| Width (B) | 7 mm |
| Outer Diameter (D) | 30 mm |
| Radius rs min | 0.3 mm |
| Flange Df | 32.5 mm |
| Flange Width Bf | 1.5 mm |
| Performance | |
| Dynamic Load Cr (N) | 4588 N |
| Static Load C0r (N) | 2565 N |
| Grease Speed (x1000 rpm) | 23 x1000 rpm |
| Oil Speed (x1000 rpm) | 38 x1000 rpm |
| Design Configurations | |
| Open Model | 6903 |
| Flanged Open Model | F6903 |
| Shielded Model | 6903ZZ |
| Flanged Shielded Model | F6903ZZ |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 11 |
| Ball Size Dw | 3.969 mm |
| Shielded Weight (g) | 20 g |
| Flanged Shielded Weight (g) | 21.4 g |
6903 30 mm 17 mm 7 mm Frequently Asked Questions about 6903 Metric Super-Thin Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
For international ocean and air freight, CHG Bearing packs 6903 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
When fitting 6903 over a 17 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Beyond standard alloy steel, CHG Bearing can customize the 6903 Metric Super-Thin Deep Groove 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.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 6903, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
