Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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You entered 6810DDU. This table explores the base group 6810; it does not preserve or approve every requested suffix. Search your complete marking first →
One base designation across loaded brands
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“6810” across 3 loaded brands
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Brand differences at a glance
| Parameter | NSK681050 × 65 × 7 mm | KOYO681050 × 65 × 7 mm | NACHI681050 × 65 × 7 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | NSK | KOYO | NACHI |
| Designation | 6810 | 6810 | 6810 |
| Product family | Single row deep groove ball bearings | Single-row / Open type | Deep groove ball bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 50 mm | 50 mm | 50 mm |
| Outside diameterD | 65 mm | 65 mm | 65 mm |
| WidthB | 7 mm | 7 mm | 7 mm |
| Basic dynamic load ratingC | 7.05 kN | 8.2 kN | 8.05 kN |
| Basic static load ratingC0 | 6.2 kN | 6.1 kN | 5.8 kN |
| Fatigue load limitPu | — | 0.26 kN | — |
| Limiting speednG | — | 9600 r/min | — |
| Mass≈m | 0.05 kg | 0.052 kg | 0.052 kg |
| Sealing | Open | Open | Open |
| Boundary dimensions | |||
| Bearing widthB | 7 mm | — | 7 mm |
| Minimum bearing chamferr min. | 0.3 mm | — | 0.3 mm |
| 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 | — | — |
| Equivalent-load factors | |||
| Catalogue load calculation factorf0 | — | — | 16.1 |
| Load ratings | |||
| Basic dynamic radial load ratingCr | 7050 N | — | 8050 N |
| Basic static radial load ratingC0r | 6200 N | — | 5800 N |
| Equivalent-load calculation factorf0 | 17.2 | — | — |
| Lubrication-qualified speed | |||
| Limiting speed with grease | 9500 r/min | — | — |
| Limiting speed with oil (open bearing) | 11000 r/min | — | — |
| Limiting speed with grease (open) | — | — | 10000 r/min |
| Limiting speed with oil (open) | — | — | 12000 r/min |
| Manufacturer Identity | |||
| Official Class Key | — | 010-010-010 | — |
| Mounting dimensions | |||
| Minimum shaft shoulder diameterda min. | 52 mm | — | 52 mm |
| Maximum shaft shoulder diameterda max. | 52.5 mm | — | — |
| Maximum housing shoulder diameterDa max. | 63 mm | — | 63 mm |
| Maximum adjacent fillet radiusra max. | — | — | 0.3 mm |
| Maximum shaft or housing fillet radiusra max. | 0.3 mm | — | — |
| Reference mass | |||
| Catalogue row mass (variants not individually specified) | — | — | 0.052 kg |
| Approximate catalogue mass (open reference) | 0.05 kg | — | — |
| Technical Data | |||
| d | — | 65 mm | — |
| B | — | 7 mm | — |
| R(Min.) | — | 0.3 mm | — |
| Basic Load Ratings : Cr | — | 8.20 kN | — |
| Basic Load Ratings : C0R | — | 6.10 kN | — |
| Fatigue Load Limit : Cu | — | 0.260 kN | — |
| Factor : F0 | — | 16.1 | — |
| Limiting Speeds(Grease Lub.) | — | 9600 min-1 | — |
| Limiting Speeds(Oil Lub.) | — | 11000 min-1 | — |
| Da(Min.) | — | 52 mm | — |
| Da(Max.) | — | 63 mm | — |
| Ra(Max.) | — | 0.3 mm | — |
| Mass(Refer.) | — | 0.052 kg | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.