Cross-brand designation analysis
COMPARE / VERIFY
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
“6701” 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 | KOYO670112 × 18 × 4 mm | EZO6701ZZ12 × 18 × 4 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | KOYO | EZO |
| Designation | 6701 | 6701ZZ |
| Product family | Single-row / Open type | Thin-Section Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 12 mm | 12 mm |
| Outside diameterD | 18 mm | 18 mm |
| WidthB | 4 mm | 4 mm |
| Basic dynamic load ratingC | 1.15 kN | 0.928 kN |
| Basic static load ratingC0 | 0.53 kN | 0.532 kN |
| Fatigue load limitPu | 0.023 kN | — |
| Limiting speednG | 34000 r/min | — |
| Mass≈m | 0.003 kg | 0.00283 kg |
| Sealing | Open | Two pressed-steel shields |
| Bearing material | — | High-carbon chromium bearing steel |
| Boundary dimensions | ||
| Outer diameterD | — | 18 mm |
| Outer diameterD | — | 0.7087 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 | — | 0.2 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 |
| Classification | ||
| Official Category Path | Deep groove ball bearings - Single-row - Open type | — |
| Official Classification 1 | Deep groove ball bearings / Single-row / Open type | — |
| Construction | ||
| Closure interpretation | — | Two pressed-steel shields |
| Material interpretation | — | High-carbon chromium bearing steel |
| Lubrication-qualified speed | ||
| Catalogue limiting speed (grease) | — | 13000 r/min |
| Catalogue limiting speed (oil) | — | 15000 r/min |
| Manufacturer Identity | ||
| Official Class Key | 010-010-010 | — |
| Mounting dimensions | ||
| Adjacent mounting dimension (da min)da min | — | 17 mm |
| Adjacent mounting dimension (da min)da min | — | 0.6693 inch |
| Adjacent mounting dimension (da max)da max | — | 17 mm |
| Adjacent mounting dimension (da max)da max | — | 0.6693 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 | ||
| Reference mass | — | 2.83 g |
| Rolling elements | ||
| Ball diameterDw | — | 1.588 mm |
| Ball quantityZ | — | 13 |
| Technical Data | ||
| d | 18 mm | — |
| B | 4 mm | — |
| R(Min.) | 0.2 mm | — |
| Basic Load Ratings : Cr | 1.15 kN | — |
| Basic Load Ratings : C0R | 0.530 kN | — |
| Fatigue Load Limit : Cu | 0.023 kN | — |
| Factor : F0 | 16.2 | — |
| Limiting Speeds(Grease Lub.) | 34000 min-1 | — |
| Limiting Speeds(Oil Lub.) | 41000 min-1 | — |
| Da(Min.) | 13.6 mm | — |
| Da(Max.) | 16.4 mm | — |
| Ra(Max.) | 0.2 mm | — |
| Mass(Refer.) | 0.003 kg | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.