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
“128” 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 | TIMKEN128WBR140 × 220 × 36 mm | KOYO128FC88600640 × 880 × 600 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 128WBR | 128FC88600 |
| Product family | Radial Deep-Groove Ball | Four-row cylindrical roller bearings |
| Detailed type | Deep groove ball bearings | Rolling mill roll neck bearings |
| Series | 100 | — |
| Bore diameterd | 140 mm | 640 mm |
| Outside diameterD | 220 mm | 880 mm |
| WidthB | 36 mm | 600 mm |
| Basic dynamic load ratingC | 147 kN | 16100 kN |
| Basic static load ratingC0 | 156 kN | 40800 kN |
| Fatigue load limitPu | — | 3400 kN |
| Mass≈m | 5.24 kg | 1130 kg |
| Sealing | Open | — |
| Cage | Brass cage | — |
| Calculation Factors | ||
| K Factor | 0.00 | — |
| Y1 Factor | 0.00 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.50 | — |
| E Factor | 0.00 | — |
| Cg Factor | 0.0809 | — |
| 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 | 000000000100024285 | — |
| Official Class Key | — | 140-010-000 |
| World Assembly Part Number | 128WBR | — |
| Upc | 0087796066458 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.757 | — |
| Product Identity | ||
| Type Description | Radial Deep-Groove Ball | — |
| Construction | Single Row Deep Groove Ball Bearing | Imperial Series | 5.5118 in Bore | 8.6614 in OD | 1.4173 in Width | Open | Cylindrical Bore | Brass Cage | C0 Clearance | ISO P0 Tolerance | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 880 mm |
| B | — | 600 mm |
| Overall Width | 0.000 mm | — |
| C | — | 600 mm |
| Radial Rating | 163,000 N | — |
| Fw | — | 700 mm |
| Axial Rating | 0 N | — |
| R(Min.) | — | 6 mm |
| Dynamic Rating C1 | 147,000 N | — |
| R1(Min.) | — | 6 mm |
| Dynamic Rating C90 | 0 N | — |
| Basic Load Ratings : Cr | — | 16100 kN |
| Dynamic Axial Rating Ca90 | 0 N | — |
| Basic Load Ratings : C0R | — | 40800 kN |
| Dynamic Axial Rating Ca1 | 0 N | — |
| Fatigue Load Limit : Cu | — | 3400 kN |
| Static Radial Rating C0 | 156,000 N | — |
| Da(Min.) | — | 824 mm |
| Extended Dynamic Rating Ce | 163,000 N | — |
| Da(Max.) | — | 852 mm |
| Static Axial Rating C0A | 0 N | — |
| Ra(Max.) | — | 5 mm |
| Rb(Max.) | — | 5 mm |
| Mass(Refer.) | — | 1130 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.