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
“150” 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 | TIMKEN150RU91C4150 × 235 × 66.7 mm | KOYO150FC100670750 × 1000 × 670 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 150RU91C4 | 150FC100670 |
| Product family | Cylindrical 1-Row | Four-row cylindrical roller bearings |
| Detailed type | Cylindrical roller bearings | Rolling mill roll neck bearings |
| Series | EX27653 | — |
| Bore diameterd | 150 mm | 750 mm |
| Outside diameterD | 235 mm | 1000 mm |
| WidthB | 66.7 mm | 670 mm |
| Basic dynamic load ratingC | 653 kN | 19600 kN |
| Basic static load ratingC0 | 939 kN | 54200 kN |
| Fatigue load limitPu | — | 4300 kN |
| Mass≈m | 11 kg | 1520 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 | 0.1424 | — |
| 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 | 000000000190017043 | — |
| Official Class Key | — | 140-010-000 |
| World Assembly Part Number | 150RU91 | — |
| Inner Ring Part Number | 150ARUT91 | — |
| Outer Ring Part Number | 150ERUT91 | — |
| Drawing Number | M101923 | — |
| Upc | 0053893769578 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:46.147 | — |
| Product Identity | ||
| Type Description | Cylindrical 1-Row | — |
| Construction | Single Row Cylindrical Roller Bearing | Imperial Series | 5.9055 in Bore | 9.2520 in OD | 2.6260 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C4 Clearance | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 1000 mm |
| B | — | 670 mm |
| C | — | 670 mm |
| Fw | — | 813 mm |
| R(Min.) | — | 6 mm |
| Overall Width | 0.000 mm | — |
| R1(Min.) | — | 6 mm |
| Radial Rating | 653,000 N | — |
| Basic Load Ratings : Cr | — | 19600 kN |
| Axial Rating | 0 N | — |
| Basic Load Ratings : C0R | — | 54200 kN |
| Dynamic Rating C1 | 653,000 N | — |
| Fatigue Load Limit : Cu | — | 4300 kN |
| Dynamic Rating C90 | 0 N | — |
| Da(Min.) | — | 941 mm |
| Dynamic Axial Rating Ca90 | 0 N | — |
| Da(Max.) | — | 972 mm |
| Dynamic Axial Rating Ca1 | 0 N | — |
| Ra(Max.) | — | 5 mm |
| Static Radial Rating C0 | 939,000 N | — |
| Rb(Max.) | — | 5 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Mass(Refer.) | — | 1520 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.