Cross-brand designation analysis
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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
“6404” across 2 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 | SKF640420 × 72 × 19 mm | KOYO640420 × 72 × 19 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | KOYO |
| Designation | 6404 | 6404 |
| Product family | Deep groove ball bearings | Single-row / Open type |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 20 mm | 20 mm |
| Outside diameterD | 72 mm | 72 mm |
| WidthB | 19 mm | 19 mm |
| Basic dynamic load ratingC | 30.7 kN | 38.7 kN |
| Basic static load ratingC0 | 15 kN | 15.2 kN |
| Fatigue load limitPu | 0.64 kN | 1.5 kN |
| Reference speednref | 24000 r/min | — |
| Limiting speednG | 15000 r/min | 11000 r/min |
| Mass≈m | 0.4 kg | 0.4 kg |
| Precision class | Normal | — |
| Internal clearance | CN | — |
| Sealing | Without | Open |
| Cage | Sheet metal | — |
| Bearing material | Bearing steel | — |
| Lubricant | None | — |
| Classification | ||
| Official Category Path | — | Deep groove ball bearings - Single-row - Open type |
| Official Classification 1 | — | Deep groove ball bearings / Single-row / Open type |
| Engineering — Abutment dimensions | ||
| Diameter of shaft abutmentd a | min. 29 mm | — |
| Diameter of housing abutmentD a | max. 63 mm | — |
| Radius of shaft or housing filletr a | max. 1 mm | — |
| Engineering — Calculation data | ||
| Minimum load factork r | 0.04 | — |
| Calculation factorf 0 | 11 | — |
| Engineering — Dimensions | ||
| Deviation limits of mid-range bore diametert Δdmp | -0.01 to 0 mm | — |
| Deviation limits of mid-range outside diametert ΔDmp | -0.013 to 0 mm | — |
| Deviation limits of ring widtht ΔBs | -0.12 to 0 mm | — |
| Shoulder diameterd 1 | ≈ 54.75 mm | — |
| Chamfer dimensionr 1,2 | min. 1.1 mm | — |
| ISO tolerance class for dimensions | Normal | — |
| Engineering — Tolerances of run-out | ||
| Range of section height at inner ring of assembled bearingt Kia | 13 µm | — |
| Range of section height at outer ring of assembled bearingt Kea | 25 µm | — |
| ISO tolerance class for geometrical tolerances | Normal | — |
| Logistics | ||
| Product net weight | 0.4 kg | — |
| eClass code | 23-05-08-01 | — |
| UNSPSC code | 31171504 | — |
| Manufacturer Identity | ||
| Official Class Key | — | 010-010-010 |
| 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 | 1.5 kg CO 2 e | — |
| Technical Data | ||
| d | — | 72 mm |
| B | — | 19 mm |
| R(Min.) | — | 1.1 mm |
| Basic Load Ratings : Cr | — | 38.7 kN |
| Basic Load Ratings : C0R | — | 15.2 kN |
| Fatigue Load Limit : Cu | — | 1.50 kN |
| Factor : F0 | — | 11.1 |
| Limiting Speeds(Grease Lub.) | — | 11000 min-1 |
| Limiting Speeds(Oil Lub.) | — | 13000 min-1 |
| Da(Min.) | — | 26.5 mm |
| Da(Max.) | — | 65.5 mm |
| Ra(Max.) | — | 1 mm |
| Mass(Refer.) | — | 0.400 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.