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CUSTOM / 08 MAX
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| Parameter | NSKR1886.35 × 12.7 × 3.175 mm | EZOR1886.35 × 12.7 × 3.175 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | NSK | EZO |
| Designation | R188 | R188 |
| Product family | Single row deep groove ball bearings | Inch-Series Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 6.35 mm | 6.35 mm |
| Outside diameterD | 12.7 mm | 12.7 mm |
| WidthB | 3.175 mm | 3.175 mm |
| Basic dynamic load ratingC | 1.19 kN | 1.08 kN |
| Basic static load ratingC0 | 0.44 kN | 0.438 kN |
| Mass≈m | 0.00153 kg | 0.00147 kg |
| Sealing | Open | Open (no closure suffix in this catalogue marking) |
| Bearing material | — | High-carbon chromium bearing steel |
| Boundary dimensions | ||
| Bearing width (open)B | 3.175 mm | — |
| Outer diameterD | — | 12.7 mm |
| Minimum bearing chamferr min. | 0.15 mm | — |
| Outer diameterD | — | 0.5 inch |
| Inner ring widthB | — | 3.175 mm |
| Inner ring widthB | — | 0.125 inch |
| Outer ring widthC | — | 3.175 mm |
| Outer ring widthC | — | 0.125 inch |
| Inner ring chamfer dimensionr si min | — | 0.15 mm |
| Inner ring chamfer dimensionr si min | — | 0.0059 inch |
| Outer ring chamfer dimensionr se min | — | 0.15 mm |
| Outer ring chamfer dimensionr se min | — | 0.0059 inch |
| Construction | ||
| Catalogue closure construction | Open | — |
| Closure interpretation | — | Open (no closure suffix in this catalogue marking) |
| Material interpretation | — | High-carbon chromium bearing steel |
| Load ratings | ||
| Basic dynamic radial load ratingCr | 1190 N | — |
| Basic static radial load ratingC0r | 440 N | — |
| Lubrication-qualified speed | ||
| Limiting speed with grease | 40000 r/min | — |
| Limiting speed with oil (open) | 50000 r/min | — |
| Catalogue limiting speed (grease) | — | 48000 r/min |
| Catalogue limiting speed (oil) | — | 56000 r/min |
| Mounting dimensions | ||
| Minimum shaft shoulder diameter (open)da min. | 7.6 mm | — |
| Maximum adjacent fillet radiusra max. | 0.15 mm | — |
| Maximum housing shoulder diameter (open)Da max. | 11.5 mm | — |
| Adjacent mounting dimension (da min)da min | — | 11.1 mm |
| Adjacent mounting dimension (da min)da min | — | 0.437 inch |
| Adjacent mounting dimension (da max)da max | — | 11.5 mm |
| Adjacent mounting dimension (da max)da max | — | 0.4528 inch |
| Adjacent mounting dimension (r asi max)r asi max | — | 0.15 mm |
| Adjacent mounting dimension (r asi max)r asi max | — | 0.0059 inch |
| Adjacent mounting dimension (r ase max)r ase max | — | 0.15 mm |
| Adjacent mounting dimension (r ase max)r ase max | — | 0.0059 inch |
| Reference mass | ||
| Approximate catalogue mass (open) | 1.53 g | — |
| Reference mass | — | 1.47 g |
| Rolling elements | ||
| Ball diameterDw | — | 2 mm |
| Ball quantityZ | — | 8 |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.