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| Parameter | TIMKEN93800A / 93125203.2 × 317.5 × 63.501 mm | KOYO93800D/125/127D203.2 × 317.5 × 266.7 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 93800A / 93125 | 93800D/125/127D |
| Product family | TS - Tapered Single | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | 93000 | — |
| Bore diameterd | 203.2 mm | 203.2 mm |
| Outside diameterD | 317.5 mm | 317.5 mm |
| WidthB | 63.501 mm | 266.7 mm |
| Basic dynamic load ratingC | 731 kN | 2220 kN |
| Basic static load ratingC0 | 1290 kN | 4540 kN |
| Fatigue load limitPu | — | 489 kN |
| Mass≈m | 17.72 kg | 78.8 kg |
| Calculation Factors | ||
| K Factor | 1.12 | — |
| Y1 Factor | 1.15 | — |
| Y2 Factor | -1.00 | — |
| Y0 Factor | 0.63 | — |
| E Factor | 0.52 | — |
| Cg Factor | 0.1460 | — |
| 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 | 100005057100006238 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | 93800A / 93125 | — |
| Inner Ring Part Number | 93800A | — |
| Outer Ring Part Number | 93125 | — |
| 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 | — | 317.500 mm |
| T | — | 266.700 mm |
| Overall Width | 68.800 mm | — |
| W | — | 266.700 mm |
| Radial Rating | 190,000 N | — |
| R(Min.) | — | 3.2 mm |
| Axial Rating | 170,000 N | — |
| R1(Min.) | — | 1.6 mm |
| Dynamic Rating C1 | 731,000 N | — |
| Basic Load Ratings : Cr | — | 2220 kN |
| Dynamic Rating C90 | 190,000 N | — |
| Basic Load Ratings : C0R | — | 4540 kN |
| Dynamic Axial Rating Ca90 | 170,000 N | — |
| Fatigue Load Limit : Cu | — | 489 kN |
| Dynamic Axial Rating Ca1 | 655,000 N | — |
| Axial Load Factors : Y2 | — | 1.29 mm |
| Static Radial Rating C0 | 1,290,000 N | — |
| Axial Load Factors : Y3 | — | 1.92 |
| Extended Dynamic Rating Ce | 0 N | — |
| Axial Load Factors : Y0 | — | 1.26 |
| Static Axial Rating C0A | 1,970,000 N | — |
| Constant E | — | 0.52 |
| Da(Min.) | — | 223 mm |
| Da(Max.) | — | 278 mm |
| S(Min.) | — | 6.5 mm |
| Ra(Max.) | — | 3.2 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 78.8 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.