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| Parameter | TIMKENM244249A-908H5220.662 × 314.325 × 61.912 mm | KOYOM244249D/210/210D220.663 × 314.325 × 239.713 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | M244249A-908H5 | M244249D/210/210D |
| Product family | TS - Tapered Single | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | M244200 | — |
| Bore diameterd | 220.662 mm | 220.663 mm |
| Outside diameterD | 314.325 mm | 314.325 mm |
| WidthB | 61.912 mm | 239.713 mm |
| Basic dynamic load ratingC | 649 kN | 2260 kN |
| Basic static load ratingC0 | 1240 kN | 4890 kN |
| Fatigue load limitPu | — | 538 kN |
| Mass≈m | 14.93 kg | 59 kg |
| Precision class | ABMA Class 8 | — |
| 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 | 0.1327 | — |
| 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 | 000000000100184393 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | M244249A_M244210 | — |
| Inner Ring Part Number | M244249A | — |
| Outer Ring Part Number | M244210 | — |
| Drawing Number | C-51408 | — |
| Upc | 0053893926575 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:46.327 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 8.6875 in Bore | 12.3750 in OD | 2.4375 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 8 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 314.325 mm |
| T | — | 239.713 mm |
| W | — | 239.713 mm |
| R(Min.) | — | 3.2 mm |
| R1(Min.) | — | 1.6 mm |
| Overall Width | 70.675 mm | — |
| Basic Load Ratings : Cr | — | 2260 kN |
| Radial Rating | 168,000 N | — |
| Basic Load Ratings : C0R | — | 4890 kN |
| Axial Rating | 95,800 N | — |
| Fatigue Load Limit : Cu | — | 538 kN |
| Dynamic Rating C1 | 649,000 N | — |
| Axial Load Factors : Y2 | — | 2.03 mm |
| Dynamic Rating C90 | 168,000 N | — |
| Axial Load Factors : Y3 | — | 3.02 |
| Dynamic Axial Rating Ca90 | 95,800 N | — |
| Axial Load Factors : Y0 | — | 1.98 |
| Dynamic Axial Rating Ca1 | 369,000 N | — |
| Constant E | — | 0.33 |
| Static Radial Rating C0 | 1,240,000 N | — |
| Da(Min.) | — | 241 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Da(Max.) | — | 288 mm |
| Static Axial Rating C0A | 1,200,000 N | — |
| S(Min.) | — | 5 mm |
| Ra(Max.) | — | 3.2 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 59 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.