Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
Cross Reference centre · Interchange verification checklist · Understand suffix differences
You entered MR63ZZ. This table explores the base group MR63; it does not preserve or approve every requested suffix. Search your complete marking first →
One base designation across loaded brands
Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.
“MR63” across 2 loaded brands
One highest-ranked designation candidate is shown per manufacturer. Use Custom Compare when you want to choose exact suffix variants yourself.
Brand differences at a glance
| Parameter | NSKMR633 × 6 × 2 mm | EZOMR63ZZ3 × 6 × 2.5 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | NSK | EZO |
| Designation | MR63 | MR63ZZ |
| Product family | Single row deep groove ball bearings | Miniature Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 3 mm | 3 mm |
| Outside diameterD | 6 mm | 6 mm |
| WidthB | 2 mm | 2.5 mm |
| Basic dynamic load ratingC | 0.23 kN | 0.209 kN |
| Basic static load ratingC0 | 0.074 kN | 0.073 kN |
| Mass≈m | 0.0002 kg | 0.00026 kg |
| Sealing | Open | Two pressed-steel shields |
| Bearing material | — | High-carbon chromium bearing steel |
| Boundary dimensions | ||
| Bearing width (open)B | 2 mm | — |
| Outer diameterD | — | 6 mm |
| Minimum bearing chamferr min. | 0.1 mm | — |
| Outer diameterD | — | 0.2362 inch |
| Inner ring widthB | — | 2.5 mm |
| Inner ring widthB | — | 0.0984 inch |
| Outer ring widthC | — | 2.5 mm |
| Outer ring widthC | — | 0.0984 inch |
| Inner ring chamfer dimensionr si min | — | 0.1 mm |
| Inner ring chamfer dimensionr si min | — | 0.0039 inch |
| Outer ring chamfer dimensionr se min | — | 0.1 mm |
| Outer ring chamfer dimensionr se min | — | 0.0039 inch |
| Construction | ||
| Catalogue closure construction | Open | — |
| Closure interpretation | — | Two pressed-steel shields |
| Material interpretation | — | High-carbon chromium bearing steel |
| Load ratings | ||
| Basic dynamic radial load ratingCr | 230 N | — |
| Basic static radial load ratingC0r | 74 N | — |
| Lubrication-qualified speed | ||
| Limiting speed with grease | 71000 r/min | — |
| Limiting speed with oil (open) | 80000 r/min | — |
| Catalogue limiting speed (grease) | — | 81000 r/min |
| Catalogue limiting speed (oil) | — | 96000 r/min |
| Mounting dimensions | ||
| Minimum shaft shoulder diameter (open)da min. | 3.8 mm | — |
| Maximum adjacent fillet radiusra max. | 0.1 mm | — |
| Maximum housing shoulder diameter (open)Da max. | 5.2 mm | — |
| Adjacent mounting dimension (da min)da min | — | 5.5 mm |
| Adjacent mounting dimension (da min)da min | — | 0.2165 inch |
| Adjacent mounting dimension (da max)da max | — | 5.5 mm |
| Adjacent mounting dimension (da max)da max | — | 0.2165 inch |
| Adjacent mounting dimension (r asi max)r asi max | — | 0.1 mm |
| Adjacent mounting dimension (r asi max)r asi max | — | 0.0039 inch |
| Adjacent mounting dimension (r ase max)r ase max | — | 0.1 mm |
| Adjacent mounting dimension (r ase max)r ase max | — | 0.0039 inch |
| Reference mass | ||
| Approximate catalogue mass (open) | 0.2 g | — |
| Reference mass | — | 0.26 g |
| Rolling elements | ||
| Ball diameterDw | — | 0.8 mm |
| Ball quantityZ | — | 8 |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.