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 differ
“140” across 2 loaded brands
The base designation is shared, but the loaded boundary dimensions do not agree. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | TIMKEN140RU51 R3140 × 220 × 36 mm | KOYO140FC98700700 × 980 × 700 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 140RU51 R3 | 140FC98700 |
| Product family | Cylindrical 1-Row | Four-row cylindrical roller bearings |
| Detailed type | Cylindrical roller bearings | Rolling mill roll neck bearings |
| Series | EX27530 | — |
| Bore diameterd | 140 mm | 700 mm |
| Outside diameterD | 220 mm | 980 mm |
| WidthB | 36 mm | 700 mm |
| Basic dynamic load ratingC | 274 kN | 19100 kN |
| Basic static load ratingC0 | 308 kN | 48200 kN |
| Fatigue load limitPu | — | 3940 kN |
| Mass≈m | 5.1 kg | 1680 kg |
| Sealing | Open | — |
| Cage | Window Brass cage | — |
| Calculation Factors | ||
| K Factor | 0.00 | — |
| Y1 Factor | 0.00 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.00 | — |
| E Factor | 0.00 | — |
| Cg Factor | 0.1048 | — |
| Classification | ||
| Official Category Path | — | Rolling mill roll neck bearings - Four-row cylindrical roller bearings |
| Official Classification 1 | — | Rolling mill roll neck bearings / Four-row cylindrical roller bearings |
| Manufacturer Identity | ||
| Material Number | 000000000100180343 | — |
| Official Class Key | — | 140-010-000 |
| World Assembly Part Number | 140RU51 | — |
| Inner Ring Part Number | 140ARUT51 | — |
| Outer Ring Part Number | 140ERUT51 | — |
| Drawing Number | M919599 | — |
| Upc | 0087796020900 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.76 | — |
| Product Identity | ||
| Type Description | Cylindrical 1-Row | — |
| Construction | Single Row Cylindrical Roller Bearing | Imperial Series | 5.5118 in Bore | 8.6614 in OD | 1.4173 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | R3 Clearance | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 980 mm |
| B | — | 700 mm |
| C | — | 700 mm |
| Fw | — | 774 mm |
| R(Min.) | — | 6 mm |
| Overall Width | 0.000 mm | — |
| R1(Min.) | — | 6 mm |
| Radial Rating | 274,000 N | — |
| Basic Load Ratings : Cr | — | 19100 kN |
| Axial Rating | 0 N | — |
| Basic Load Ratings : C0R | — | 48200 kN |
| Dynamic Rating C1 | 274,000 N | — |
| Fatigue Load Limit : Cu | — | 3940 kN |
| Dynamic Rating C90 | 0 N | — |
| Da(Min.) | — | 914 mm |
| Dynamic Axial Rating Ca90 | 0 N | — |
| Da(Max.) | — | 952 mm |
| Dynamic Axial Rating Ca1 | 0 N | — |
| Ra(Max.) | — | 5 mm |
| Static Radial Rating C0 | 308,000 N | — |
| Rb(Max.) | — | 5 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Mass(Refer.) | — | 1680 kg |
| Static Axial Rating C0A | 0 N | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.