Manufactured by CHG Bearing, the R1-4* is a precision Inch Miniature Deep Groove Ball Bearings. Key dimensional parameters include a 1.984 mm bore diameter, a 6.35 mm outer diameter, and a 2.38 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.
R1-4* - Inch Miniature Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | R1-4* |
| Dimensions | |
| Bore Diameter (d) | 1.984 mm |
| Width (B) | 2.38 mm |
| Outer Diameter (D) | 6.35 mm |
| Open Width B | 2.38 mm |
| Radius rs min | 0.1 mm |
| Flange Df | 7.518 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) | 284 N |
| Static Load C0r (N) | 96 N |
| Grease Speed (x1000 rpm) | 67 x1000 rpm |
| Oil Speed (x1000 rpm) | 80 x1000 rpm |
| Design Configurations | |
| Open Model | R1-4* |
| Flanged Open Model | FR1-4* |
| Shielded Model | R1-4ZZ* |
| Flanged Shielded Model | FR1-4ZZ* |
| 2RS | - |
| 2RU | - |
| TTS | TTS |
| Internal Design & Weight | |
| Cage Type | W |
| Ball Qty. Z | 7 |
| Ball Size Dw | 1 mm |
| Shielded Weight (g) | 0.53 g |
| Flanged Shielded Weight (g) | 0.61 g |
| Open Weight (g) | 0.4 g |
| Flanged Open Weight (g) | 0.46 g |
R1-4* 6.35 mm 1.984 mm 2.38 mm Frequently Asked Questions about R1-4* Inch Miniature Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Quality starts with raw material selection: CHG Bearing crafts R1-4* inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
Each R1-4* produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (1.984 mm bore side) ensures perfect planar contact without edge binding.
Built for demanding industrial environments, the R1-4* Inch Miniature Deep Groove Ball Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
Engineered according to international ISO boundary plans, CHG Bearing supplies R1-4* with a precision bore diameter (d) of 1.984 mm, an outside diameter (D) of 6.35 mm, and a nominal ring width (B) of 2.38 mm. This configuration yields an effective cross-sectional wall thickness of 2.2 mm and an envelope ratio (D/d) of 3.2, delivering compact rigidity for OEM machinery housings.
