Manufactured by CHG Bearing, the R09 is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 1.016 mm bore diameter, a 3.175 mm outer diameter, and a 1.191 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.

R09 - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R09 |
| Dimensions | |
| Bore Diameter (d) | 1.016 mm |
| Width (B) | 1.191 mm |
| Outer Diameter (D) | 3.175 mm |
| Open Width B | 1.191 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 4.343 mm |
| Open Flange Width Bf | 0.33 mm |
| Performance | |
| Dynamic Load Cr (N) | 106 N |
| Static Load C0r (N) | 28 N |
| Grease Speed (x1000 rpm) | 130 x1000 rpm |
| Oil Speed (x1000 rpm) | 150 x1000 rpm |
| Design Configurations | |
| Open Model | R09 |
| Flanged Open Model | FR09 |
| Shielded Model | - |
| Flanged Shielded Model | - |
| 2RS | - |
| 2RU | - |
| TTS | - |
| Internal Design & Weight | |
| Cage Type | W |
| Ball Qty. Z | 6 |
| Ball Size Dw | 0.635 mm |
| Open Weight (g) | 0.05 g |
| Flanged Open Weight (g) | 0.07 g |
R09 3.175 mm 1.016 mm 1.191 mm Frequently Asked Questions about R09 Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, 100% of R09 Inch Miniature Deep Groove Ball Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
Absolutely. The CHG Bearing R09 Inch Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF R09, FAG R09, NSK R09. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
The Open Type engineered for R09 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
In its sealed configuration (Open Type), CHG Bearing pre-charges R09 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.
