Cross-brand designation analysis
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Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
Automatic candidate selection
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.
Designation candidates
“MR84” 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.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | NSKMR844 × 8 × 2 mm | EZOMR84ZZ4 × 8 × 3 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | NSK | EZO |
| Designation | MR84 | MR84ZZ |
| Product family | Single row deep groove ball bearings | Miniature Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 4 mm | 4 mm |
| Outside diameterD | 8 mm | 8 mm |
| WidthB | 2 mm | 3 mm |
| Basic dynamic load ratingC | 0.435 kN | 0.395 kN |
| Basic static load ratingC0 | 0.139 kN | 0.14 kN |
| Mass≈m | 0.00036 kg | 0.00051 kg |
| Sealing | Open | Two pressed-steel shields |
| Bearing material | — | High-carbon chromium bearing steel |
| Boundary dimensions | ||
| Bearing width (open)B | 2 mm | — |
| Outer diameterD | — | 8 mm |
| Minimum bearing chamferr min. | 0.15 mm | — |
| Outer diameterD | — | 0.315 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 | — | 0.1 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 | 435 N | — |
| Basic static radial load ratingC0r | 139 N | — |
| Lubrication-qualified speed | ||
| Limiting speed with grease | 56000 r/min | — |
| Limiting speed with oil (open) | 67000 r/min | — |
| Catalogue limiting speed (grease) | — | 67000 r/min |
| Catalogue limiting speed (oil) | — | 79000 r/min |
| Mounting dimensions | ||
| Minimum shaft shoulder diameter (open)da min. | 5.2 mm | — |
| Maximum adjacent fillet radiusra max. | 0.15 mm | — |
| Maximum housing shoulder diameter (open)Da max. | 6.8 mm | — |
| Adjacent mounting dimension (da min)da min | — | 7.5 mm |
| Adjacent mounting dimension (da min)da min | — | 0.2953 inch |
| Adjacent mounting dimension (da max)da max | — | 7.5 mm |
| Adjacent mounting dimension (da max)da max | — | 0.2953 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) | 0.36 g | — |
| Reference mass | — | 0.51 g |
| Rolling elements | ||
| Ball diameterDw | — | 1.2 mm |
| Ball quantityZ | — | 7 |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.