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
“NF307” across 3 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 | SKFNF 307 ECP35 × 80 × 21 mm | NSKNF307W35 × 80 × 21 mm | KOYONF30735 × 80 × 21 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | NSK | KOYO |
| Designation | NF 307 ECP | NF307W | NF307 |
| Product family | Cylindrical roller bearings | Cylindrical roller bearing | Single-row / NF |
| Detailed type | Single row cylindrical roller bearing | Cylindrical roller bearings | Cylindrical roller bearings |
| Bore diameterd | 35 mm | 35 mm | 35 mm |
| Outside diameterD | 80 mm | 80 mm | 80 mm |
| WidthB | 21 mm | 21 mm | 21 mm |
| Basic dynamic load ratingC | 75 kN | 61 kN | 62 kN |
| Basic static load ratingC0 | 63 kN | 47 kN | 46.9 kN |
| Fatigue load limitPu | 8.15 kN | — | 6.2 kN |
| Reference speednref | 9500 r/min | — | — |
| Limiting speednG | 11000 r/min | — | 7900 r/min |
| Mass≈m | 0.47 kg | — | 0.484 kg |
| Internal clearance | CN | — | — |
| Sealing | Without | — | — |
| Cage | Non-metallic | Pressed steel | — |
| Lubricant | None | — | — |
| Boundary dimensions | |||
| Bearing widthB | — | 21 mm | — |
| Minimum bearing chamferr min. | — | 1.5 mm | — |
| Minimum secondary bearing chamferr1 min. | — | 1.1 mm | — |
| Roller circumscribed circle diameterEw | — | 68.2 mm | — |
| Catalogue reference mass | |||
| Approximate shared-row mass — not separately stated for each rib arrangement | — | 0.476 kg | — |
| Classification | |||
| Official Category Path | — | — | Cylindrical roller bearings - Single-row - NF |
| Official Classification 1 | — | — | Cylindrical roller bearings / Single-row / NF |
| Construction | |||
| Single-row construction type | — | NF | — |
| Rib arrangement | — | Two inner-ring ribs; one outer-ring rib | — |
| Standard cage material | — | Pressed steel | — |
| Standard cage marking | — | W | — |
| Other cage codes listed for this catalogue row | — | M | — |
| Precision — designation omission rule | — | ISO Normal when no precision suffix is specified | — |
| Clearance identification — verify interchangeability | — | No clearance suffix shown. CN omission applies to interchangeable designs; do not infer a numerical clearance. | — |
| Optimized crowning note | — | No optimized-crowning asterisk on this row | — |
| Engineering — Abutment dimensions | |||
| Diameter of spacer sleeved a | min. 43 mm | — | — |
| Diameter of housing abutmentD a | max. 72.2 mm | — | — |
| Diameter of housing abutmentD b | min. 71.8 mm | — | — |
| Radius of filletr a | max. 1.5 mm | — | — |
| Engineering — Calculation data | |||
| SKF performance class | SKF Explorer | — | — |
| Minimum load factork r | 0.12 | — | — |
| Limiting valuee | 0.2 | — | — |
| Calculation factorY | 0.6 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter of inner ringd 1 | ≈ 51 mm | — | — |
| Shoulder diameter of outer ringD 1 | ≈ 65.8 mm | — | — |
| Raceway diameter of outer ringE | 70.2 mm | — | — |
| Chamfer dimensionr 1,2 | min. 1.5 mm | — | — |
| Chamfer dimensionr 3,4 | min. 1.1 mm | — | — |
| Permissible axial displacements | max. 1.2 mm | — | — |
| Load ratings — standard cage | |||
| Basic dynamic radial load ratingCr | — | 61000 N | — |
| Basic static radial load ratingC0r | — | 47000 N | — |
| Logistics | |||
| Product net weight | 0.47 kg | — | — |
| eClass code | 23-05-09-01 | — | — |
| UNSPSC code | 31171505 | — | — |
| Lubrication-qualified speed — standard cage | |||
| Thermal speed rating — oil bath | — | 9500 r/min | — |
| Mechanical limiting speed — forced oil circulation | — | Not stated in this catalogue row | — |
| Limiting speed — grease | — | 6300 r/min | — |
| Limiting speed — oil bath | — | 7500 r/min | — |
| Manufacturer Identity | |||
| Official Class Key | — | — | 040-010-000 |
| Mounting dimensions — shown arrangement | |||
| Minimum shaft shoulder diameterda min. | — | 43 mm | — |
| Maximum housing shoulder diameterDb max. | — | 73.5 mm | — |
| Minimum housing shoulder diameterDb min. | — | 70 mm | — |
| Maximum adjacent fillet radiusra max. | — | 1.5 mm | — |
| Maximum secondary adjacent fillet radiusrb max. | — | 1 mm | — |
| Product identity | |||
| Official product category | Cylindrical roller bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/single-row-cylindrical-roller-bearings | — | — |
| Structure group ID | BC1_001_101 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Axial displacement capability | In one direction | — | — |
| Number of rows | 1 | — | — |
| Locating feature, bearing outer ring | Without | — | — |
| Bore type | Cylindrical | — | — |
| Number of flanges, outer ring | 1 | — | — |
| Number of flanges, inner ring | 2 | — | — |
| Loose flange | None | — | — |
| Radial internal clearance | CN | — | — |
| Tolerance class | Normal | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Indicative carbon footprint for new product | 1.7 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 80 mm |
| B | — | — | 21 mm |
| R(Min.) | — | — | 1.5 mm |
| R1(Min.) | — | — | 1.1 mm |
| Fw | — | — | - mm |
| Ew | — | — | 68.2 mm |
| Basic Load Ratings : Cr | — | — | 62.0 kN |
| Basic Load Ratings : C0R | — | — | 46.9 kN |
| Fatigue Load Limit : Cu | — | — | 6.20 kN |
| Limiting Speeds(Grease Lub.) | — | — | 7900 min-1 |
| Limiting Speeds(Oil Lub.) | — | — | 10000 min-1 |
| Sd1 | — | — | - mm |
| B1 | — | — | - mm |
| B2 | — | — | - mm |
| Da(Min.) | — | — | 43 mm |
| Db(Min.) | — | — | 71 mm |
| Db(Max.) | — | — | 73.5 mm |
| Dc(Min.) | — | — | - mm |
| Dd(Min.) | — | — | - mm |
| Da(Max.) | — | — | - mm |
| Ra(Max.) | — | — | 1.5 mm |
| Rb(Max.) | — | — | 1 mm |
| Mass(Refer.) | — | — | 0.484 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.