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CUSTOM / 08 MAX
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| Parameter | NSKMR1377 × 13 × 3 mm | EZOMR1377 × 13 × 3 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | NSK | EZO |
| Designation | MR137 | MR137 |
| Product family | Single row deep groove ball bearings | Miniature Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 7 mm | 7 mm |
| Outside diameterD | 13 mm | 13 mm |
| WidthB | 3 mm | 3 mm |
| Basic dynamic load ratingC | 0.595 kN | 0.541 kN |
| Basic static load ratingC0 | 0.276 kN | 0.276 kN |
| Mass≈m | 0.00158 kg | 0.00155 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 mm | — |
| Outer diameterD | — | 13 mm |
| Minimum bearing chamferr min. | 0.2 mm | — |
| Outer diameterD | — | 0.5118 inch |
| Inner ring widthB | — | 3 mm |
| Inner ring widthB | — | 0.1181 inch |
| Outer ring widthC | — | 3 mm |
| Outer ring widthC | — | 0.1181 inch |
| Inner ring chamfer dimensionr si min | — | 0.2 mm |
| Inner ring chamfer dimensionr si min | — | 0.0079 inch |
| Outer ring chamfer dimensionr se min | — | 0.2 mm |
| Outer ring chamfer dimensionr se min | — | 0.0079 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 | 595 N | — |
| Basic static radial load ratingC0r | 276 N | — |
| Lubrication-qualified speed | ||
| Limiting speed with grease | 40000 r/min | — |
| Limiting speed with oil (open) | 48000 r/min | — |
| Catalogue limiting speed (grease) | — | 45000 r/min |
| Catalogue limiting speed (oil) | — | 53000 r/min |
| Mounting dimensions | ||
| Minimum shaft shoulder diameter (open)da min. | 8.6 mm | — |
| Maximum adjacent fillet radiusra max. | 0.2 mm | — |
| Maximum housing shoulder diameter (open)Da max. | 11.4 mm | — |
| Adjacent mounting dimension (da min)da min | — | 11.2 mm |
| Adjacent mounting dimension (da min)da min | — | 0.4409 inch |
| Adjacent mounting dimension (da max)da max | — | 11.4 mm |
| Adjacent mounting dimension (da max)da max | — | 0.4488 inch |
| Adjacent mounting dimension (r asi max)r asi max | — | 0.2 mm |
| Adjacent mounting dimension (r asi max)r asi max | — | 0.0079 inch |
| Adjacent mounting dimension (r ase max)r ase max | — | 0.2 mm |
| Adjacent mounting dimension (r ase max)r ase max | — | 0.0079 inch |
| Reference mass | ||
| Approximate catalogue mass (open) | 1.58 g | — |
| Reference mass | — | 1.55 g |
| Rolling elements | ||
| Ball diameterDw | — | 1.2 mm |
| Ball quantityZ | — | 12 |
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.