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| Parameter | TIMKENLM769349X-902B1431.8 × 571.5 × 192.09 mm | KOYOLM769349D/310/310D431.8 × 571.5 × 336.55 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | LM769349X-902B1 | LM769349D/310/310D |
| Product family | TDO - Tapered Double Outer | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | LM769300 | — |
| Bore diameterd | 431.8 mm | 431.8 mm |
| Outside diameterD | 571.5 mm | 571.5 mm |
| WidthB | 192.09 mm | 336.55 mm |
| Basic dynamic load ratingC | 3320 kN | 4610 kN |
| Basic static load ratingC0 | 8270 kN | 11300 kN |
| Fatigue load limitPu | — | 1040 kN |
| Mass≈m | 127.45 kg | 231 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.33 | — |
| Y1 Factor | 1.54 | — |
| Y2 Factor | 2.29 | — |
| Y0 Factor | 1.51 | — |
| E Factor | 0.44 | — |
| Cg Factor | 0.2426 | — |
| 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 | 000000000100209605 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | LM769349X_LM769310D | — |
| Inner Ring Part Number | LM769349X | — |
| Outer Ring Part Number | LM769310D | — |
| Drawing Number | E-47589 | — |
| Upc | 0013992364111 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.4 | — |
| Product Identity | ||
| Type Description | TDO - Tapered Double Outer | — |
| Construction | Double Row Tapered Roller Bearing Assembly | Imperial Series | 17.0000 in Bore | 22.5000 in OD | 7.5626 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 2 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 571.500 mm |
| T | — | 336.550 mm |
| W | — | 336.550 mm |
| R(Min.) | — | 6.4 mm |
| R1(Min.) | — | 1.6 mm |
| Overall Width | 0.000 mm | — |
| Basic Load Ratings : Cr | — | 4610 kN |
| Radial Rating | 862,000 N | — |
| Basic Load Ratings : C0R | — | 11300 kN |
| Axial Rating | 371,000 N | — |
| Fatigue Load Limit : Cu | — | 1040 kN |
| Dynamic Rating C1 | 3,320,000 N | — |
| Axial Load Factors : Y2 | — | 1.41 mm |
| Dynamic Rating C90 | 862,000 N | — |
| Axial Load Factors : Y3 | — | 2.10 |
| Dynamic Axial Rating Ca90 | 371,000 N | — |
| Axial Load Factors : Y0 | — | 1.38 |
| Dynamic Axial Rating Ca1 | 1,430,000 N | — |
| Constant E | — | 0.48 |
| Static Radial Rating C0 | 8,270,000 N | — |
| Da(Min.) | — | 463 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Da(Max.) | — | 534 mm |
| Static Axial Rating C0A | 5,270,000 N | — |
| S(Min.) | — | 7 mm |
| Ra(Max.) | — | 6.4 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 231 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.