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
“F623” across 3 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 | NSKF6233 × 10 × 4 mm | KOYOF6233 × 10 × 4 mm | EZOF6233 × 10 × 4 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | NSK | KOYO | EZO |
| Designation | F623 | F623 | F623 |
| Product family | Single row deep groove ball bearings | Extra-small, miniature ball bearings / Flanged type / Open | Flanged Miniature Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 3 mm | 3 mm | 3 mm |
| Outside diameterD | 10 mm | 10 mm | 10 mm |
| WidthB | 4 mm | 4 mm | 4 mm |
| Basic dynamic load ratingC | 0.695 kN | 0.8 kN | 0.633 kN |
| Basic static load ratingC0 | 0.218 kN | 0.22 kN | 0.218 kN |
| Fatigue load limitPu | — | 0.006 kN | — |
| Limiting speednG | — | 61000 r/min | — |
| Mass≈m | 0.00185 kg | 0.001 kg | 0.00168 kg |
| Sealing | Open | Open | Open (no closure suffix in this catalogue marking) |
| Bearing material | — | — | High-carbon chromium bearing steel |
| Boundary dimensions | |||
| Body outside diameterD | 10 mm | — | — |
| Bearing width (open)B | 4 mm | — | — |
| Outer diameterD | — | — | 10 mm |
| Minimum bearing chamferr min. | 0.15 mm | — | — |
| Outer diameterD | — | — | 0.3937 inch |
| Inner ring widthB | — | — | 4 mm |
| Inner ring widthB | — | — | 0.1575 inch |
| Outer ring widthC | — | — | 4 mm |
| Outer ring widthC | — | — | 0.1575 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 |
| Flange outer diameterD 1 | — | — | 11.5 mm |
| Flange outer diameterD 1 | — | — | 0.4528 inch |
| Flange widthC 1 | — | — | 1 mm |
| Flange widthC 1 | — | — | 0.0394 inch |
| Classification | |||
| Official Category Path | — | Deep groove ball bearings - Extra-small, miniature ball bearings - Flanged type - Open | — |
| Official Classification 1 | — | Deep groove ball bearings / Extra-small, miniature ball bearings / Flanged type / Open | — |
| Construction | |||
| Catalogue closure construction | Open | — | — |
| Closure interpretation | — | — | Open (no closure suffix in this catalogue marking) |
| Material interpretation | — | — | High-carbon chromium bearing steel |
| Flange dimensions | |||
| Flange outside diameterD1 | 11.5 mm | — | — |
| Flange widthC1 | 1 mm | — | — |
| Load ratings | |||
| Basic dynamic radial load ratingCr | 695 N | — | — |
| Basic static radial load ratingC0r | 218 N | — | — |
| Lubrication-qualified speed | |||
| Limiting speed with grease | 50000 r/min | — | — |
| Limiting speed with oil (open) | 60000 r/min | — | — |
| Catalogue limiting speed (grease) | — | — | 66000 r/min |
| Catalogue limiting speed (oil) | — | — | 78000 r/min |
| Manufacturer Identity | |||
| Official Class Key | — | 010-020-020 | — |
| Mounting dimensions | |||
| Minimum shaft shoulder diameter (open)da min. | 4.2 mm | — | — |
| Maximum adjacent fillet radiusra max. | 0.15 mm | — | — |
| Adjacent mounting dimension (da min)da min | — | — | 3.9 mm |
| Adjacent mounting dimension (da min)da min | — | — | 0.1535 inch |
| Adjacent mounting dimension (da max)da max | — | — | 4.3 mm |
| Adjacent mounting dimension (da max)da max | — | — | 0.1693 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 |
| Reference mass | |||
| Approximate catalogue mass (open) | 1.85 g | — | — |
| Reference mass | — | — | 1.68 g |
| Rolling elements | |||
| Ball diameterDw | — | — | 1.588 mm |
| Ball quantityZ | — | — | 7 |
| Technical Data | |||
| d | — | 10 mm | — |
| B | — | 4 mm | — |
| R(Min.) | — | 0.15 mm | — |
| Basic Load Ratings : Cr | — | 0.80 kN | — |
| Basic Load Ratings : C0R | — | 0.22 kN | — |
| Fatigue Load Limit : Cu | — | 0.006 kN | — |
| Factor : F0 | — | 12.4 | — |
| Limiting Speeds(Grease Lub.) | — | 61000 min-1 | — |
| Limiting Speeds(Oil Lub.) | — | 72000 min-1 | — |
| Dimensions Of Flange D1 | — | 11.5 mm | — |
| Dimensions Of Flange C1 | — | 1 mm | — |
| Da(Min.) | — | 4.2 mm | — |
| Ra(Max.) | — | 0.15 mm | — |
| Mass(Refer.) | — | 1.8 g | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.