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| Parameter | TIMKENLM286249AA-904A9863.6 × 1130.3 × 371.475 mm | KOYOLM286249D/210/210D863.6 × 1130.3 × 669.925 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | LM286249AA-904A9 | LM286249D/210/210D |
| Product family | TDO - Tapered Double Outer | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | LM286200 | — |
| Bore diameterd | 863.6 mm | 863.6 mm |
| Outside diameterD | 1130.3 mm | 1130.3 mm |
| WidthB | 371.475 mm | 669.925 mm |
| Basic dynamic load ratingC | 11400 kN | 20500 kN |
| Basic static load ratingC0 | 34800 kN | 59600 kN |
| Fatigue load limitPu | — | 4250 kN |
| Mass≈m | 951.15 kg | 1840 kg |
| Precision class | ABMA Class 4 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.76 | — |
| Y1 Factor | 2.03 | — |
| Y2 Factor | 3.02 | — |
| Y0 Factor | 1.98 | — |
| E Factor | 0.33 | — |
| Cg Factor | 0.3933 | — |
| 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 | 000000000100149050 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | LM286249AA_LM286210CD | — |
| Inner Ring Part Number | LM286249AA | — |
| Outer Ring Part Number | LM286210CD | — |
| Drawing Number | E-40422 | — |
| Upc | 0053893125718 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:48.503 | — |
| Product Identity | ||
| Type Description | TDO - Tapered Double Outer | — |
| Construction | Double Row Tapered Roller Bearing Assembly | Imperial Series | 34.0000 in Bore | 44.5000 in OD | 14.6250 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 4 | — |
| Number Of Rows | 2 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 1130.3 mm |
| T | — | 669.925 mm |
| W | — | 669.925 mm |
| R(Min.) | — | 12.7 mm |
| R1(Min.) | — | 4.8 mm |
| Overall Width | 0.000 mm | — |
| Basic Load Ratings : Cr | — | 20500 kN |
| Radial Rating | 2,940,000 N | — |
| Basic Load Ratings : C0R | — | 59600 kN |
| Axial Rating | 963,000 N | — |
| Fatigue Load Limit : Cu | — | 4250 kN |
| Dynamic Rating C1 | 11,400,000 N | — |
| Axial Load Factors : Y2 | — | 2.08 mm |
| Dynamic Rating C90 | 2,940,000 N | — |
| Axial Load Factors : Y3 | — | 3.10 |
| Dynamic Axial Rating Ca90 | 963,000 N | — |
| Axial Load Factors : Y0 | — | 2.04 |
| Dynamic Axial Rating Ca1 | 3,710,000 N | — |
| Constant E | — | 0.32 |
| Static Radial Rating C0 | 34,800,000 N | — |
| Da(Min.) | — | 920 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Da(Max.) | — | 1063 mm |
| Static Axial Rating C0A | 16,900,000 N | — |
| S(Min.) | — | 15 mm |
| Ra(Max.) | — | 12.7 mm |
| Rb(Max.) | — | 4.8 mm |
| Mass(Refer.) | — | 1840 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.