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| Parameter | TIMKEN45284 / 4522050.8 × 104.775 × 30.162 mm | KOYO45284420 × 620 × 150 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 45284 / 45220 | 45284 |
| Product family | TS - Tapered Single | Double-row / TDI type |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 45200 | — |
| Bore diameterd | 50.8 mm | 420 mm |
| Outside diameterD | 104.775 mm | 620 mm |
| WidthB | 30.162 mm | 150 mm |
| Basic dynamic load ratingC | 153 kN | 3010 kN |
| Basic static load ratingC0 | 189 kN | 5200 kN |
| Fatigue load limitPu | — | 496 kN |
| Limiting speednG | — | 320 r/min |
| Mass≈m | 1.2 kg | 152 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 | 0.0971 | — |
| Classification | ||
| Official Category Path | — | Tapered roller bearings - Double-row - TDI type |
| Official Classification 1 | — | Tapered roller bearings / Double-row / TDI type |
| Manufacturer Identity | ||
| Material Number | 000000000100096412 | — |
| Official Class Key | — | 050-020-020 |
| World Assembly Part Number | 45284_45220 | — |
| Inner Ring Part Number | 45284 | — |
| Outer Ring Part Number | 45220 | — |
| Drawing Number | A-20542 | — |
| Upc | 0053893657370 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.077 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 2.0000 in Bore | 4.1250 in OD | 1.1875 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 620 mm |
| B | — | 150 mm |
| T | — | 150 mm |
| R(Min.) | — | 5 mm |
| Overall Width | 35.258 mm | — |
| R1(Min.) | — | 6 mm |
| Radial Rating | 39,700 N | — |
| Basic Load Ratings : Cr | — | 3010 kN |
| Axial Rating | 22,600 N | — |
| Basic Load Ratings : C0R | — | 5200 kN |
| Dynamic Rating C1 | 153,000 N | — |
| Fatigue Load Limit : Cu | — | 496 kN |
| Dynamic Rating C90 | 39,700 N | — |
| Limiting Speeds(Grease Lub.) | — | 320 min-1 |
| Dynamic Axial Rating Ca90 | 22,600 N | — |
| Limiting Speeds(Oil Lub.) | — | 430 min-1 |
| Dynamic Axial Rating Ca1 | 87,300 N | — |
| Constant E | — | 0.33 |
| Static Radial Rating C0 | 189,000 N | — |
| Axial Load Factors : Y2 | — | 2.03 |
| Extended Dynamic Rating Ce | 0 N | — |
| Axial Load Factors : Y3 | — | 3.02 |
| Static Axial Rating C0A | 184,000 N | — |
| Axial Load Factors : Y0 | — | 1.98 |
| Da(Max.) | — | 598 mm |
| Da(Min.) | — | 564 mm |
| Sa(Min.) | — | 6 mm |
| Ra(Max.) | — | 4 mm |
| Rb(Max.) | — | 5 mm |
| Mass(Refer.) | — | 152 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.