Manufactured by CHG Bearing, the R4* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 6.35 mm bore diameter, a 15.875 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.
R4* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R4* |
| Dimensions | |
| Bore Diameter (d) | 6.35 mm |
| Width (B) | 4.978 mm |
| Outer Diameter (D) | 15.875 mm |
| Open Width B | 4.978 mm |
| Radius rs min | 0.3 mm |
| Flange Df | 17.526 mm |
| Closed Width B1 | 4.978 mm |
| Open Flange Width Bf | 1.067 mm |
| Closed Flange Width Bf1 | 1.607 mm |
| Performance | |
| Dynamic Load Cr (N) | 1480 N |
| Static Load C0r (N) | 621 N |
| Grease Speed (x1000 rpm) | 38 x1000 rpm |
| Oil Speed (x1000 rpm) | 45 x1000 rpm |
| Design Configurations | |
| Open Model | R4* |
| Flanged Open Model | FR4* |
| Shielded Model | R4ZZ* |
| Flanged Shielded Model | FR4ZZ* |
| 2RS | 2RS |
| 2RU | 2RU |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | J |
| Ball Qty. Z | 8 |
| Ball Size Dw | 2.381 mm |
| Shielded Weight (g) | 4.54 g |
| Flanged Shielded Weight (g) | 4.9 g |
| Open Weight (g) | 4.46 g |
| Flanged Open Weight (g) | 4.82 g |
R4* 15.875 mm 6.35 mm 4.978 mm Frequently Asked Questions about R4* Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Sourcing R4* 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.
The Open Type engineered for R4* 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.
Absolutely. The CHG Bearing R4* Inch Miniature Deep Groove Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF R4*, FAG R4*, NSK R4*. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
For international ocean and air freight, CHG Bearing packs R4* 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.
