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.
Dimensions verified
“623” across 4 loaded brands
At least two brands share the same bore, outside diameter and width. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | SKF6233 × 10 × 4 mm | NSK6233 × 10 × 4 mm | KOYO6233 × 10 × 4 mm | EZO623H3 × 10 × 4 mm |
|---|---|---|---|---|
| Comparable specifications | ||||
| Brand | SKF | NSK | KOYO | EZO |
| Designation | 623 | 623 | 623 | 623H |
| Product family | Deep groove ball bearings | Single row deep groove ball bearings | Extra-small, miniature ball bearings / Standard type / Open | Miniature Ball Bearing |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 3 mm | 3 mm | 3 mm | 3 mm |
| Outside diameterD | 10 mm | 10 mm | 10 mm | 10 mm |
| WidthB | 4 mm | 4 mm | 4 mm | 4 mm |
| Basic dynamic load ratingC | 0.54 kN | 0.695 kN | 0.8 kN | 0.538 kN |
| Basic static load ratingC0 | 0.18 kN | 0.218 kN | 0.22 kN | 0.175 kN |
| Fatigue load limitPu | 0.007 kN | — | 0.006 kN | — |
| Reference speednref | 130000 r/min | — | — | — |
| Limiting speednG | 80000 r/min | — | 52000 r/min | — |
| Mass≈m | 0.0015 kg | 0.00165 kg | 0.001 kg | 0.00147 kg |
| Precision class | Normal | — | — | — |
| Internal clearance | CN | — | — | — |
| Sealing | Without | Open | Open | Open (no closure suffix in this catalogue marking) |
| Cage | Sheet metal | — | — | — |
| Bearing material | Bearing steel | — | — | Stainless-steel rings and balls |
| Lubricant | None | — | — | — |
| Boundary dimensions | ||||
| 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 |
| Classification | ||||
| Official Category Path | — | — | Deep groove ball bearings - Extra-small, miniature ball bearings - Standard type - Open | — |
| Official Classification 1 | — | — | Deep groove ball bearings / Extra-small, miniature ball bearings / Standard type / Open | — |
| Construction | ||||
| Catalogue closure construction | — | Open | — | — |
| Closure interpretation | — | — | — | Open (no closure suffix in this catalogue marking) |
| Material interpretation | — | — | — | Stainless-steel rings and balls |
| Engineering — Abutment dimensions | ||||
| Diameter of shaft abutmentd a | min. 4.2 mm | — | — | — |
| Diameter of housing abutmentD a | max. 8.8 mm | — | — | — |
| Radius of shaft or housing filletr a | max. 0.1 mm | — | — | — |
| Engineering — Calculation data | ||||
| Minimum load factork r | 0.03 | — | — | — |
| Calculation factorf 0 | 7.5 | — | — | — |
| Engineering — Dimensions | ||||
| Deviation limits of mid-range bore diametert Δdmp | -0.008 to 0 mm | — | — | — |
| Deviation limits of mid-range outside diametert ΔDmp | -0.008 to 0 mm | — | — | — |
| Deviation limits of ring widtht ΔBs | -0.12 to 0 mm | — | — | — |
| Shoulder diameterd 1 | ≈ 4.8 mm | — | — | — |
| Recess diameterD 2 | ≈ 8.2 mm | — | — | — |
| Chamfer dimensionr 1,2 | min. 0.15 mm | — | — | — |
| ISO tolerance class for dimensions | Normal | — | — | — |
| Engineering — Tolerances of run-out | ||||
| Range of section height at inner ring of assembled bearingt Kia | 10 µm | — | — | — |
| Range of section height at outer ring of assembled bearingt Kea | 15 µm | — | — | — |
| ISO tolerance class for geometrical tolerances | Normal | — | — | — |
| Load ratings | ||||
| Basic dynamic radial load ratingCr | — | 695 N | — | — |
| Basic static radial load ratingC0r | — | 218 N | — | — |
| Logistics | ||||
| Product net weight | 0.0015 kg | — | — | — |
| eClass code | 23-05-08-01 | — | — | — |
| UNSPSC code | 31171504 | — | — | — |
| 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 | — | — | 010-020-010 | — |
| Mounting dimensions | ||||
| Minimum shaft shoulder diameter (open)da min. | — | 4.2 mm | — | — |
| Maximum adjacent fillet radiusra max. | — | 0.15 mm | — | — |
| Maximum housing shoulder diameter (open)Da max. | — | 8.8 mm | — | — |
| Adjacent mounting dimension (da min)da min | — | — | — | 8.1 mm |
| Adjacent mounting dimension (da min)da min | — | — | — | 0.3189 inch |
| Adjacent mounting dimension (da max)da max | — | — | — | 8.8 mm |
| Adjacent mounting dimension (da max)da max | — | — | — | 0.3465 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 |
| Adjacent mounting dimension (r ase max)r ase max | — | — | — | 0.15 mm |
| Adjacent mounting dimension (r ase max)r ase max | — | — | — | 0.0059 inch |
| Product identity | ||||
| Official product category | Deep groove ball bearings | — | — | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/deep-groove-ball-bearings | — | — | — |
| Structure group ID | BB1_001_101 | — | — | — |
| Available from SKF | Yes | — | — | — |
| Remanufacturable | No | — | — | — |
| Properties | ||||
| Filling slots | Without | — | — | — |
| Number of rows | 1 | — | — | — |
| Locating feature, bearing outer ring | Without | — | — | — |
| Bore type | Cylindrical | — | — | — |
| Matched arrangement | No | — | — | — |
| Radial internal clearance | CN | — | — | — |
| Material, bearing | Bearing steel | — | — | — |
| Coating | Without | — | — | — |
| Relubrication feature | Without | — | — | — |
| Indicative carbon footprint for new product | 0.006 kg CO 2 e | — | — | — |
| Reference mass | ||||
| Approximate catalogue mass (open) | — | 1.65 g | — | — |
| Reference mass | — | — | — | 1.47 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 | — | — | 0.800 kN | — |
| Basic Load Ratings : C0R | — | — | 0.22 kN | — |
| Fatigue Load Limit : Cu | — | — | 0.006 kN | — |
| Factor : F0 | — | — | 12.8 | — |
| Limiting Speeds(Grease Lub.) | — | — | 52000 min-1 | — |
| Limiting Speeds(Oil Lub.) | — | — | 63000 min-1 | — |
| Da(Min.) | — | — | 4.2 mm | — |
| Da(Max.) | — | — | 8.8 mm | — |
| Ra(Max.) | — | — | 0.15 mm | — |
| Mass(Refer.) | — | — | 1.6 g | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.