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
“3318” 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 | SKF3318 A90 × 190 × 73 mm | KOYO331890 × 190 × 73 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | KOYO |
| Designation | 3318 A | 3318 |
| Product family | Angular contact ball bearings | Double-row / Open |
| Detailed type | Double row angular contact ball bearing | Angular contact ball bearings |
| Bore diameterd | 90 mm | 90 mm |
| Outside diameterD | 190 mm | 190 mm |
| WidthB | 73 mm | 73 mm |
| Basic dynamic load ratingC | 208 kN | 256 kN |
| Basic static load ratingC0 | 180 kN | 242 kN |
| Fatigue load limitPu | 6.4 kN | 10.6 kN |
| Reference speednref | 3800 r/min | — |
| Limiting speednG | 3400 r/min | 2100 r/min |
| Mass≈m | 8.54 kg | 9.23 kg |
| Sealing | Without | Open |
| Cage | Sheet metal | — |
| Bearing material | Bearing steel | — |
| Lubricant | None | — |
| Classification | ||
| Official Category Path | — | Angular contact ball bearings - Double-row - Open |
| Official Classification 1 | — | Angular contact ball bearings / Double-row / Open |
| Dimensions | ||
| Contact angle | 30.0 ° | — |
| Engineering — Abutment dimensions | ||
| Abutment diameter shaftd a | min. 104 mm | — |
| Abutment diameter housingD a | max. 176 mm | — |
| Fillet radiusr a | max. 2.5 mm | — |
| Engineering — Calculation data | ||
| SKF performance class | SKF Explorer | — |
| Calculation factork r | 0.07 | — |
| Limiting valuee | 0.8 | — |
| Calculation factorX | 0.63 | — |
| Calculation factorY 0 | 0.66 | — |
| Calculation factorY 1 | 0.78 | — |
| Calculation factorY 2 | 1.2 | — |
| Engineering — Dimensions | ||
| Shoulder diameter inner ringd 1 | ≈ 123.85 mm | — |
| Shoulder diameter outer ringD 1 | ≈ 159.83 mm | — |
| Chamfer dimension inner ringr 1,2 | min. 3 mm | — |
| Distance pressure point(s)a | 112 mm | — |
| Logistics | ||
| Product net weight | 8.54 kg | — |
| eClass code | 23-05-08-03 | — |
| UNSPSC code | 31171531 | — |
| Manufacturer Identity | ||
| Official Class Key | — | 020-030-000 |
| Product identity | ||
| Official product category | Angular contact ball bearings | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/angular-contact-ball-bearings/double-row-angular-contact-ball-bearings | — |
| Structure group ID | BA2_001 | — |
| Available from SKF | Yes | — |
| Remanufacturable | No | — |
| Properties | ||
| Contact type | Normal contact (two-point contact) | — |
| Number of rows | 2 | — |
| Locating feature, bearing outer ring | Without | — |
| Ring type | One-piece inner and outer rings | — |
| Arrangement of contact angle (double-row bearing) | Back-to-back (O) | — |
| Matched arrangement | No | — |
| Universal matching bearing | No | — |
| Axial internal clearance | CN | — |
| Material, bearing | Bearing steel | — |
| Coating | Without | — |
| Relubrication feature | Without | — |
| Indicative carbon footprint for new product | 31.6 kg CO 2 e | — |
| Technical Data | ||
| d | — | 190 mm |
| B | — | 73 mm |
| R(Min.) | — | 3 mm |
| Basic Load Ratings : Cr | — | 256 kN |
| Basic Load Ratings : C0R | — | 242 kN |
| Fatigue Load Limit : Cu | — | 10.6 kN |
| Limiting Speeds(Grease Lub.) | — | 2100 min-1 |
| Limiting Speeds(Oil Lub.) | — | 2800 min-1 |
| Load Center Spread : A | — | 125.5 mm |
| Da(Min.) | — | 104 mm |
| Da(Max.) | — | 176 mm |
| Ra(Max.) | — | 2.5 mm |
| Mass(Refer.) | — | 9.23 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.