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| Parameter | TIMKENHM624749 / HM624710120.65 × 190.5 × 46.038 mm | KOYOHM624749/10120.65 × 190.5 × 46.038 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | HM624749 / HM624710 | HM624749/10 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | HM624700 | — |
| Bore diameterd | 120.65 mm | 120.65 mm |
| Outside diameterD | 190.5 mm | 190.5 mm |
| WidthB | 46.038 mm | 46.038 mm |
| Basic dynamic load ratingC | 362 kN | 393 kN |
| Basic static load ratingC0 | 543 kN | 512 kN |
| Fatigue load limitPu | — | 63.9 kN |
| Limiting speednG | — | 1900 r/min |
| Mass≈m | 4.62 kg | 4.64 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.37 | — |
| Y1 Factor | 1.41 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.77 | — |
| E Factor | 0.43 | — |
| Cg Factor | 0.1178 | — |
| Classification | ||
| Official Category Path | — | Tapered roller bearings - Single-row - Inch series |
| Official Classification 1 | — | Tapered roller bearings / Single-row / Inch series |
| Manufacturer Identity | ||
| Material Number | 000000000100130212 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | HM624749_HM624710 | — |
| Inner Ring Part Number | HM624749 | — |
| Outer Ring Part Number | HM624710 | — |
| Drawing Number | B-70609 | — |
| Upc | 0053893662091 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.383 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 4.7500 in Bore | 7.5000 in OD | 1.8125 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 190.500 mm |
| T | — | 46.038 mm |
| B | — | 46.038 mm |
| C | — | 34.925 mm |
| Overall Width | 52.638 mm | — |
| R(Min.) | — | 3.6 mm |
| Radial Rating | 93,700 N | — |
| R1(Min.) | — | 1.6 mm |
| Axial Rating | 68,500 N | — |
| Basic Load Ratings : Cr | — | 393 kN |
| Dynamic Rating C1 | 362,000 N | — |
| Basic Load Ratings : C0R | — | 512 kN |
| Dynamic Rating C90 | 93,700 N | — |
| Fatigue Load Limit : Cu | — | 63.9 kN |
| Dynamic Axial Rating Ca90 | 68,500 N | — |
| Limiting Speeds(Grease Lub.) | — | 1900 min-1 |
| Dynamic Axial Rating Ca1 | 264,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 2500 min-1 |
| Static Radial Rating C0 | 543,000 N | — |
| Load Center Spread : A | — | 41.6 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.43 |
| Static Axial Rating C0A | 676,000 N | — |
| Axial Load Factors : Y1 | — | 1.41 |
| Axial Load Factors : Y0 | — | 0.77 |
| Da | — | 174.0 mm |
| Db | — | 184.0 mm |
| Ra(Max.) | — | 3.6 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 4.64 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.