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| Parameter | TIMKEN48393A / 48320136.525 × 190.5 × 39.688 mm | KOYO48393D/20/20D136.525 × 190.5 × 161.925 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 48393A / 48320 | 48393D/20/20D |
| Product family | TS - Tapered Single | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | 48300 | — |
| Bore diameterd | 136.525 mm | 136.525 mm |
| Outside diameterD | 190.5 mm | 190.5 mm |
| WidthB | 39.688 mm | 161.925 mm |
| Basic dynamic load ratingC | 283 kN | 866 kN |
| Basic static load ratingC0 | 542 kN | 1890 kN |
| Fatigue load limitPu | — | 258 kN |
| Mass≈m | 3.39 kg | 14.3 kg |
| Calculation Factors | ||
| K Factor | 1.82 | — |
| Y1 Factor | 1.87 | — |
| Y2 Factor | -1.00 | — |
| Y0 Factor | 1.03 | — |
| E Factor | 0.32 | — |
| Cg Factor | 0.1209 | — |
| Classification | ||
| Official Category Path | — | Rolling mill roll neck bearings - Four-row tapered roller bearings |
| Official Classification 1 | — | Rolling mill roll neck bearings / Four-row tapered roller bearings |
| Manufacturer Identity | ||
| Material Number | 100126416100050928 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | 48393A / 48320 | — |
| Inner Ring Part Number | 48393A | — |
| Outer Ring Part Number | 48320 | — |
| Official Source System | TS_PREPAIR | — |
| Official Last Run | 2026-08-23T00:00:00 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 190.500 mm |
| T | — | 161.925 mm |
| Overall Width | 41.688 mm | — |
| W | — | 161.925 mm |
| Radial Rating | 73,300 N | — |
| R(Min.) | — | 3.2 mm |
| Axial Rating | 40,300 N | — |
| R1(Min.) | — | 1.6 mm |
| Dynamic Rating C1 | 283,000 N | — |
| Basic Load Ratings : Cr | — | 866 kN |
| Dynamic Rating C90 | 73,300 N | — |
| Basic Load Ratings : C0R | — | 1890 kN |
| Dynamic Axial Rating Ca90 | 40,300 N | — |
| Fatigue Load Limit : Cu | — | 258 kN |
| Dynamic Axial Rating Ca1 | 155,000 N | — |
| Axial Load Factors : Y2 | — | 2.10 mm |
| Static Radial Rating C0 | 542,000 N | — |
| Axial Load Factors : Y3 | — | 3.13 |
| Extended Dynamic Rating Ce | 0 N | — |
| Axial Load Factors : Y0 | — | 2.06 |
| Static Axial Rating C0A | 507,000 N | — |
| Constant E | — | 0.32 |
| Da(Min.) | — | 150 mm |
| Da(Max.) | — | 174 mm |
| S(Min.) | — | 4.8 mm |
| Ra(Max.) | — | 3.2 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 14.3 kg |
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.