Manufactured by CHG Bearing, the FR3* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 4.762 mm bore diameter, a 12.7 mm outer diameter, and a 4.978 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.
FR3* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | FR3* |
| Dimensions | |
| Bore Diameter (d) | 4.762 mm |
| Width (B) | 4.978 mm |
| Outer Diameter (D) | 12.7 mm |
| Open Width B | 4.978 mm |
| Radius rs min | 0.3 mm |
| Flange Df | 14.351 mm |
| Open Flange Width Bf | 1.067 mm |
| Performance | |
| Dynamic Load Cr (N) | 1301 N |
| Static Load C0r (N) | 488 N |
| Grease Speed (x1000 rpm) | 43 x1000 rpm |
| Oil Speed (x1000 rpm) | 53 x1000 rpm |
| Design Configurations | |
| Open Model | - |
| Flanged Open Model | FR3* |
| Shielded Model | - |
| Flanged Shielded Model | - |
| 2RS | - |
| 2RU | - |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 7 |
| Ball Size Dw | 2.381 mm |
| Flanged Open Weight (g) | 2.5 g |
FR3* 12.7 mm 4.762 mm 4.978 mm Frequently Asked Questions about FR3* Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Beyond standard alloy steel, CHG Bearing can customize the FR3* Inch Miniature 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.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing FR3* correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
In its sealed configuration (Open Type), CHG Bearing pre-charges FR3* 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.
Sourcing FR3* directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Inch Miniature Deep Groove Ball Bearings.
