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| Parameter | TIMKEN190RN30 R3190 × 290 × 75 mm | KOYO190FC133950950 × 1330 × 950 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 190RN30 R3 | 190FC133950 |
| Product family | Cylindrical 1-Row | Four-row cylindrical roller bearings |
| Detailed type | Cylindrical roller bearings | Rolling mill roll neck bearings |
| Series | EX27134 | — |
| Bore diameterd | 190 mm | 950 mm |
| Outside diameterD | 290 mm | 1330 mm |
| WidthB | 75 mm | 950 mm |
| Basic dynamic load ratingC | 936 kN | 35800 kN |
| Basic static load ratingC0 | 1350 kN | 97200 kN |
| Fatigue load limitPu | — | 7110 kN |
| Mass≈m | 17.7 kg | 4330 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 | 0.1390 | — |
| 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 | 000000000100180438 | — |
| Official Class Key | — | 140-010-000 |
| World Assembly Part Number | 190RN30 | — |
| Inner Ring Part Number | 190ARNT30 | — |
| Outer Ring Part Number | 190ERNT30 | — |
| Drawing Number | M902420 | — |
| Upc | 0087796020320 | — |
| 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 | 7.4803 in Bore | 11.4173 in OD | 2.9528 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | R3 Clearance | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 1330 mm |
| B | — | 950 mm |
| C | — | 950 mm |
| Fw | — | 1053 mm |
| R(Min.) | — | 9.5 mm |
| Overall Width | 0.000 mm | — |
| R1(Min.) | — | 9.5 mm |
| Radial Rating | 936,000 N | — |
| Basic Load Ratings : Cr | — | 35800 kN |
| Axial Rating | 0 N | — |
| Basic Load Ratings : C0R | — | 97200 kN |
| Dynamic Rating C1 | 936,000 N | — |
| Fatigue Load Limit : Cu | — | 7110 kN |
| Dynamic Rating C90 | 0 N | — |
| Da(Min.) | — | 1241 mm |
| Dynamic Axial Rating Ca90 | 0 N | — |
| Da(Max.) | — | 1286 mm |
| Dynamic Axial Rating Ca1 | 0 N | — |
| Ra(Max.) | — | 8 mm |
| Static Radial Rating C0 | 1,350,000 N | — |
| Rb(Max.) | — | 8 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Mass(Refer.) | — | 4330 kg |
| Static Axial Rating C0A | 0 N | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.