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 6908-2NSE. This table explores the base group 6908; 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
“6908” across 4 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 | NSK690840 × 62 × 12 mm | KOYO690840 × 62 × 12 mm | NACHI690840 × 62 × 12 mm | EZO690840 × 62 × 12 mm |
|---|---|---|---|---|
| Comparable specifications | ||||
| Brand | NSK | KOYO | NACHI | EZO |
| Designation | 6908 | 6908 | 6908 | 6908 |
| Product family | Single row deep groove ball bearings | Single-row / Open type | Deep groove ball bearing | Thin-Section Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 40 mm | 40 mm | 40 mm | 40 mm |
| Outside diameterD | 62 mm | 62 mm | 62 mm | 62 mm |
| WidthB | 12 mm | 12 mm | 12 mm | 12 mm |
| Basic dynamic load ratingC | 15 kN | 17.1 kN | 17.2 kN | 13.7 kN |
| Basic static load ratingC0 | 10 kN | 9.95 kN | 9.95 kN | 9.92 kN |
| Fatigue load limitPu | — | 0.57 kN | — | — |
| Limiting speednG | — | 11000 r/min | — | — |
| Mass≈m | 0.112 kg | 0.112 kg | 0.108 kg | 0.101 kg |
| Sealing | Open | Open | Open | Open (no closure suffix in this catalogue marking) |
| Bearing material | — | — | — | High-carbon chromium bearing steel |
| Boundary dimensions | ||||
| Bearing widthB | 12 mm | — | 12 mm | — |
| Outer diameterD | — | — | — | 62 mm |
| Minimum bearing chamferr min. | 0.6 mm | — | 0.6 mm | — |
| Outer diameterD | — | — | — | 2.4409 inch |
| Inner ring widthB | — | — | — | 12 mm |
| Inner ring widthB | — | — | — | 0.4724 inch |
| Outer ring widthC | — | — | — | 12 mm |
| Outer ring widthC | — | — | — | 0.4724 inch |
| Inner ring chamfer dimensionr si min | — | — | — | 0.6 mm |
| Inner ring chamfer dimensionr si min | — | — | — | 0.0236 inch |
| Outer ring chamfer dimensionr se min | — | — | — | 0.6 mm |
| Outer ring chamfer dimensionr se min | — | — | — | 0.0236 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 |
| Equivalent-load factors | ||||
| Catalogue load calculation factorf0 | — | — | 15.8 | — |
| Load ratings | ||||
| Basic dynamic radial load ratingCr | 15000 N | — | 17200 N | — |
| Basic static radial load ratingC0r | 10000 N | — | 9950 N | — |
| Equivalent-load calculation factorf0 | 15.7 | — | — | — |
| Lubrication-qualified speed | ||||
| Limiting speed with grease | 11000 r/min | — | — | — |
| Limiting speed with oil (open bearing) | 13000 r/min | — | — | — |
| Limiting speed with grease (open) | — | — | 11000 r/min | — |
| Limiting speed with oil (open) | — | — | 13000 r/min | — |
| Catalogue limiting speed (grease) | — | — | — | 11000 r/min |
| Catalogue limiting speed (oil) | — | — | — | 13000 r/min |
| Manufacturer Identity | ||||
| Official Class Key | — | 010-010-010 | — | — |
| Mounting dimensions | ||||
| Minimum shaft shoulder diameterda min. | 44 mm | — | 44 mm | — |
| Maximum shaft shoulder diameterda max. | 46 mm | — | — | — |
| Maximum housing shoulder diameterDa max. | 58 mm | — | 58 mm | — |
| Maximum adjacent fillet radiusra max. | — | — | 0.6 mm | — |
| Maximum shaft or housing fillet radiusra max. | 0.6 mm | — | — | — |
| Adjacent mounting dimension (da min)da min | — | — | — | 58 mm |
| Adjacent mounting dimension (da min)da min | — | — | — | 2.2835 inch |
| Adjacent mounting dimension (da max)da max | — | — | — | 59.5 mm |
| Adjacent mounting dimension (da max)da max | — | — | — | 2.3425 inch |
| Adjacent mounting dimension (r asi max)r asi max | — | — | — | 0.6 mm |
| Adjacent mounting dimension (r asi max)r asi max | — | — | — | 0.0236 inch |
| Adjacent mounting dimension (r ase max)r ase max | — | — | — | 0.6 mm |
| Adjacent mounting dimension (r ase max)r ase max | — | — | — | 0.0236 inch |
| Reference mass | ||||
| Catalogue row mass (variants not individually specified) | — | — | 0.108 kg | — |
| Approximate catalogue mass (open reference) | 0.112 kg | — | — | — |
| Reference mass | — | — | — | 101 g |
| Rolling elements | ||||
| Ball diameterDw | — | — | — | 6.747 mm |
| Ball quantityZ | — | — | — | 14 |
| Technical Data | ||||
| d | — | 62 mm | — | — |
| B | — | 12 mm | — | — |
| R(Min.) | — | 0.6 mm | — | — |
| Basic Load Ratings : Cr | — | 17.1 kN | — | — |
| Basic Load Ratings : C0R | — | 9.95 kN | — | — |
| Fatigue Load Limit : Cu | — | 0.570 kN | — | — |
| Factor : F0 | — | 15.6 | — | — |
| Limiting Speeds(Grease Lub.) | — | 11000 min-1 | — | — |
| Limiting Speeds(Oil Lub.) | — | 13000 min-1 | — | — |
| Da(Min.) | — | 44 mm | — | — |
| Da(Max.) | — | 58 mm | — | — |
| Ra(Max.) | — | 0.6 mm | — | — |
| Mass(Refer.) | — | 0.112 kg | — | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.