Manufactured by CHG Bearing, the R2-5* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 3.175 mm bore diameter, a 7.938 mm outer diameter, and a 2.779 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.
R2-5* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R2-5* |
| Dimensions | |
| Bore Diameter (d) | 3.175 mm |
| Width (B) | 2.779 mm |
| Outer Diameter (D) | 7.938 mm |
| Open Width B | 2.779 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 9.119 mm |
| Closed Width B1 | 3.571 mm |
| Open Flange Width Bf | 0.584 mm |
| Closed Flange Width Bf1 | 0.787 mm |
| Performance | |
| Dynamic Load Cr (N) | 558 N |
| Static Load C0r (N) | 180 N |
| Grease Speed (x1000 rpm) | 60 x1000 rpm |
| Oil Speed (x1000 rpm) | 67 x1000 rpm |
| Design Configurations | |
| Open Model | R2-5* |
| Flanged Open Model | FR2-5* |
| Shielded Model | R2-5ZZ* |
| Flanged Shielded Model | FR2-5ZZ* |
| 2RS | - |
| 2RU | - |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | W, J |
| Ball Qty. Z | 6 |
| Ball Size Dw | 1.588 mm |
| Shielded Weight (g) | 0.74 g |
| Flanged Shielded Weight (g) | 0.84 g |
| Open Weight (g) | 0.5 g |
| Flanged Open Weight (g) | 0.57 g |
R2-5* 7.938 mm 3.175 mm 2.779 mm Frequently Asked Questions about R2-5* 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 R2-5* 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.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for R2-5*, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
To extend the trouble-free lifespan of CHG Bearing R2-5*, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Absolutely. The CHG Bearing R2-5* Inch Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF R2-5*, FAG R2-5*, NSK R2-5*. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
