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.
Designation candidates
“6936” across 2 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 | NSK6936180 × 250 × 33 mm | KOYO6936180 × 250 × 33 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | NSK | KOYO |
| Designation | 6936 | 6936 |
| Product family | Single row deep groove ball bearings | Single-row / Open type |
| Detailed type | Deep groove ball bearings | Deep groove ball bearings |
| Bore diameterd | 180 mm | 180 mm |
| Outside diameterD | 250 mm | 250 mm |
| WidthB | 33 mm | 33 mm |
| Basic dynamic load ratingC | 131 kN | 153 kN |
| Basic static load ratingC0 | 128 kN | 129 kN |
| Fatigue load limitPu | — | 4.7 kN |
| Limiting speednG | — | 2400 r/min |
| Mass≈m | 4.16 kg | 4.9 kg |
| Sealing | Open | Open |
| Boundary dimensions | ||
| Bearing widthB | 33 mm | — |
| Minimum bearing chamferr min. | 2 mm | — |
| Classification | ||
| Official Category Path | — | Deep groove ball bearings - Single-row - Open type |
| Official Classification 1 | — | Deep groove ball bearings / Single-row / Open type |
| Construction | ||
| Catalogue closure construction | Open | — |
| Load ratings | ||
| Basic dynamic radial load ratingCr | 131000 N | — |
| Basic static radial load ratingC0r | 128000 N | — |
| Equivalent-load calculation factorf0 | 16.4 | — |
| Lubrication-qualified speed | ||
| Limiting speed with grease | 2200 r/min | — |
| Limiting speed with oil (open bearing) | 2600 r/min | — |
| Manufacturer Identity | ||
| Official Class Key | — | 010-010-010 |
| Mounting dimensions | ||
| Minimum shaft shoulder diameterda min. | 189 mm | — |
| Maximum shaft shoulder diameterda max. | 198.5 mm | — |
| Maximum housing shoulder diameterDa max. | 241 mm | — |
| Maximum shaft or housing fillet radiusra max. | 2 mm | — |
| Reference mass | ||
| Approximate catalogue mass (open reference) | 4.16 kg | — |
| Technical Data | ||
| d | — | 250 mm |
| B | — | 33 mm |
| R(Min.) | — | 2 mm |
| Basic Load Ratings : Cr | — | 153 kN |
| Basic Load Ratings : C0R | — | 129 kN |
| Fatigue Load Limit : Cu | — | 4.70 kN |
| Factor : F0 | — | 16.3 |
| Limiting Speeds(Grease Lub.) | — | 2400 min-1 |
| Limiting Speeds(Oil Lub.) | — | 2800 min-1 |
| Da(Min.) | — | 189 mm |
| Da(Max.) | — | 241 mm |
| Ra(Max.) | — | 2 mm |
| Mass(Refer.) | — | 4.90 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.