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| 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 | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.