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| Parameter | TIMKENHM265049 / HM265010368.249 × 523.875 × 101.6 mm | KOYOHM265049D/010/010D368.3 × 523.875 × 382.588 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | HM265049 / HM265010 | HM265049D/010/010D |
| Product family | TS - Tapered Single | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | HM265000 | — |
| Bore diameterd | 368.249 mm | 368.3 mm |
| Outside diameterD | 523.875 mm | 523.875 mm |
| WidthB | 101.6 mm | 382.588 mm |
| Basic dynamic load ratingC | 2270 kN | 5860 kN |
| Basic static load ratingC0 | 4340 kN | 13600 kN |
| Fatigue load limitPu | — | 1290 kN |
| Mass≈m | 69.21 kg | 269 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.76 | — |
| Y1 Factor | 1.80 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.99 | — |
| E Factor | 0.33 | — |
| Cg Factor | 0.2106 | — |
| 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 | 000000000100372152 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | HM265049_HM265010 | — |
| Inner Ring Part Number | HM265049 | — |
| Outer Ring Part Number | HM265010 | — |
| Drawing Number | E-23117 | — |
| Upc | 0053893377988 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.683 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 14.4980 in Bore | 20.6250 in OD | 4.0000 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 523.875 mm |
| T | — | 382.588 mm |
| W | — | 382.588 mm |
| R(Min.) | — | 6.4 mm |
| R1(Min.) | — | 3.2 mm |
| Overall Width | 116.100 mm | — |
| Basic Load Ratings : Cr | — | 5860 kN |
| Radial Rating | 589,000 N | — |
| Basic Load Ratings : C0R | — | 13600 kN |
| Axial Rating | 335,000 N | — |
| Fatigue Load Limit : Cu | — | 1290 kN |
| Dynamic Rating C1 | 2,270,000 N | — |
| Axial Load Factors : Y2 | — | 2.03 mm |
| Dynamic Rating C90 | 589,000 N | — |
| Axial Load Factors : Y3 | — | 3.02 |
| Dynamic Axial Rating Ca90 | 335,000 N | — |
| Axial Load Factors : Y0 | — | 1.98 |
| Dynamic Axial Rating Ca1 | 1,290,000 N | — |
| Constant E | — | 0.33 |
| Static Radial Rating C0 | 4,340,000 N | — |
| Da(Min.) | — | 403 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Da(Max.) | — | 483 mm |
| Static Axial Rating C0A | 4,210,000 N | — |
| S(Min.) | — | 7 mm |
| Ra(Max.) | — | 6.4 mm |
| Rb(Max.) | — | 3.2 mm |
| Mass(Refer.) | — | 269 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.