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.
Cross Reference centre · Interchange verification checklist · Understand suffix differences
You entered 6801-ZZ. This table explores the base group 6801; it does not preserve or approve every requested suffix. Search your complete marking first →
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
“6801” across 5 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 | NSK680112 × 21 × 5 mm | KOYO680112 × 21 × 5 mm | NACHI680112 × 21 × 5 mm | NTN680112 × 21 × 5 mm | EZO680112 × 21 × 5 mm |
|---|---|---|---|---|---|
| Comparable specifications | |||||
| Brand | NSK | KOYO | NACHI | NTN | EZO |
| Designation | 6801 | 6801 | 6801 | 6801 | 6801 |
| Product family | Single row deep groove ball bearings | Single-row / Open type | Deep groove ball bearing | Single row deep groove ball bearings | Thin-Section Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 12 mm | 12 mm | 12 mm | 12 mm | 12 mm |
| Outside diameterD | 21 mm | 21 mm | 21 mm | 21 mm | 21 mm |
| WidthB | 5 mm | 5 mm | 5 mm | 5 mm | 5 mm |
| Basic dynamic load ratingC | 2.11 kN | 2.4 kN | 2.42 kN | 2.12 kN | 1.92 kN |
| Basic static load ratingC0 | 1.04 kN | 1.05 kN | 1.04 kN | 1.04 kN | 1.04 kN |
| Fatigue load limitPu | — | 0.04 kN | — | 0.08 kN | — |
| Limiting speednG | — | 33000 r/min | — | — | — |
| Mass≈m | 0.006 kg | 0.006 kg | 0.006 kg | 0.006 kg | 0.00536 kg |
| Internal clearance | — | — | — | CN | — |
| Sealing | Open | Open | Open | open | Open (no closure suffix in this catalogue marking) |
| Cage | — | — | — | pressed steel cage | — |
| Bearing material | — | — | — | — | High-carbon chromium bearing steel |
| Minimum operating temperatureTmin | — | — | — | -40 °C | — |
| Maximum operating temperatureTmax | — | — | — | 120 °C | — |
| Boundary dimensions | |||||
| Bearing widthB | 5 mm | — | 5 mm | — | — |
| Outer diameterD | — | — | — | — | 21 mm |
| Minimum bearing chamferr min. | 0.3 mm | — | 0.3 mm | — | — |
| Outer diameterD | — | — | — | — | 0.8268 inch |
| Inner ring widthB | — | — | — | — | 5 mm |
| Inner ring widthB | — | — | — | — | 0.1969 inch |
| Outer ring widthC | — | — | — | — | 5 mm |
| Outer ring widthC | — | — | — | — | 0.1969 inch |
| Inner ring chamfer dimensionr si min | — | — | — | — | 0.3 mm |
| Inner ring chamfer dimensionr si min | — | — | — | — | 0.0118 inch |
| Outer ring chamfer dimensionr se min | — | — | — | — | 0.3 mm |
| Outer ring chamfer dimensionr se min | — | — | — | — | 0.0118 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 arrangement | — | — | Open | — | — |
| Listed closure suffix | — | — | None (open type) | — | — |
| Catalogue closure construction | Open | — | — | — | — |
| Closure interpretation | — | — | — | — | Open (no closure suffix in this catalogue marking) |
| Material interpretation | — | — | — | — | High-carbon chromium bearing steel |
| Dimensions and properties | |||||
| Internal diameterd | — | — | — | 12 mm | — |
| External diameterD | — | — | — | 21 mm | — |
| Bearing/Inner ring widthB | — | — | — | 5 mm | — |
| Min fillet radiusrs | — | — | — | 0.3 mm | — |
| Radial clearance class | — | — | — | CN | — |
| Equivalent-load factors | |||||
| Catalogue load calculation factorf0 | — | — | 15.3 | — | — |
| Load ratings | |||||
| Basic dynamic radial load ratingCr | 2110 N | — | 2420 N | — | — |
| Basic static radial load ratingC0r | 1040 N | — | 1040 N | — | — |
| Equivalent-load calculation factorf0 | 15.3 | — | — | — | — |
| Lubrication-qualified speed | |||||
| Limiting speed with grease | 32000 r/min | — | — | — | — |
| Limiting speed with oil (open bearing) | 38000 r/min | — | — | — | — |
| Limiting speed with grease (open) | — | — | 32000 r/min | — | — |
| Limiting speed with oil (open) | — | — | 39000 r/min | — | — |
| Catalogue limiting speed (grease) | — | — | — | — | 30000 r/min |
| Catalogue limiting speed (oil) | — | — | — | — | 36000 r/min |
| Manufacturer Identity | |||||
| Official Class Key | — | 010-010-010 | — | — | — |
| Mounting dimensions | |||||
| Minimum shaft shoulder diameterda min. | 14 mm | — | 14 mm | — | — |
| Maximum shaft shoulder diameterda max. | 14 mm | — | — | — | — |
| Maximum housing shoulder diameterDa max. | 19 mm | — | 19 mm | — | — |
| Maximum adjacent fillet radiusra max. | — | — | 0.3 mm | — | — |
| Maximum shaft or housing fillet radiusra max. | 0.3 mm | — | — | — | — |
| Min shoulder diameter IRda min | — | — | — | 14 mm | — |
| Max shoulder diameter ORDa max | — | — | — | 19 mm | — |
| Max shaft & housing fillet radiusra max | — | — | — | 0.3 mm | — |
| Adjacent mounting dimension (da min)da min | — | — | — | — | 19.5 mm |
| Adjacent mounting dimension (da min)da min | — | — | — | — | 0.7677 inch |
| Adjacent mounting dimension (da max)da max | — | — | — | — | 19.5 mm |
| Adjacent mounting dimension (da max)da max | — | — | — | — | 0.7677 inch |
| Adjacent mounting dimension (r asi max)r asi max | — | — | — | — | 0.3 mm |
| Adjacent mounting dimension (r asi max)r asi max | — | — | — | — | 0.0118 inch |
| Adjacent mounting dimension (r ase max)r ase max | — | — | — | — | 0.3 mm |
| Adjacent mounting dimension (r ase max)r ase max | — | — | — | — | 0.0118 inch |
| Performance | |||||
| Dynamic loadC | — | — | — | 2.12 kN | — |
| Static loadC0 | — | — | — | 1.04 kN | — |
| Fatigue limit loadCu | — | — | — | 0.08 kN | — |
| Coefficientf0 | — | — | — | 15.3 | — |
| Oil lubrication limit speedN lim | — | — | — | 35000 r/min | — |
| Grease lubrication limit speedN lim | — | — | — | 29000 r/min | — |
| Min operating temperatureTmin | — | — | — | -40 °C | — |
| Max operating temperatureTmax | — | — | — | 120 °C | — |
| Product characteristics | |||||
| Catalogue construction | — | — | — | Deep groove ball bearing, radial contact, pressed steel cage, open | — |
| Cage construction | — | — | — | pressed steel cage | — |
| Closure construction | — | — | — | open | — |
| Reference mass | |||||
| Catalogue row mass (variants not individually specified) | — | — | 0.006 kg | — | — |
| Approximate catalogue mass (open reference) | 0.006 kg | — | — | — | — |
| Reference mass | — | — | — | — | 5.36 g |
| Rolling elements | |||||
| Ball diameterDw | — | — | — | — | 2.381 mm |
| Ball quantityZ | — | — | — | — | 12 |
| Technical Data | |||||
| d | — | 21 mm | — | — | — |
| B | — | 5 mm | — | — | — |
| R(Min.) | — | 0.3 mm | — | — | — |
| Basic Load Ratings : Cr | — | 2.40 kN | — | — | — |
| Basic Load Ratings : C0R | — | 1.05 kN | — | — | — |
| Fatigue Load Limit : Cu | — | 0.040 kN | — | — | — |
| Factor : F0 | — | 15.3 | — | — | — |
| Limiting Speeds(Grease Lub.) | — | 33000 min-1 | — | — | — |
| Limiting Speeds(Oil Lub.) | — | 39000 min-1 | — | — | — |
| Da(Min.) | — | 14 mm | — | — | — |
| Da(Max.) | — | 19 mm | — | — | — |
| Ra(Max.) | — | 0.3 mm | — | — | — |
| Mass(Refer.) | — | 0.006 kg | — | — | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.