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| Parameter | TIMKEN496AS / 49381.7 × 136.525 × 30.163 mm | KOYO496/492A80.962 × 133.35 × 29.769 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 496AS / 493 | 496/492A |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 495 | — |
| Bore diameterd | 81.7 mm | 80.962 mm |
| Outside diameterD | 136.525 mm | 133.35 mm |
| WidthB | 30.163 mm | 29.769 mm |
| Basic dynamic load ratingC | 154 kN | 167 kN |
| Basic static load ratingC0 | 216 kN | 198 kN |
| Fatigue load limitPu | — | 30 kN |
| Limiting speednG | — | 2700 r/min |
| Mass≈m | 1.65 kg | 1.549 kg |
| Calculation Factors | ||
| K Factor | 1.31 | — |
| Y1 Factor | 1.35 | — |
| Y2 Factor | -1.00 | — |
| Y0 Factor | 0.74 | — |
| E Factor | 0.44 | — |
| Cg Factor | 0.1252 | — |
| 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 | 100005618100072576 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | 496AS / 493 | — |
| Inner Ring Part Number | 496AS | — |
| Outer Ring Part Number | 493 | — |
| Official Source System | TS_PREPAIR | — |
| Official Last Run | 2026-08-23T00:00:00 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 133.350 mm |
| Overall Width | 32.769 mm | — |
| T | — | 30.162 mm |
| Radial Rating | 40,000 N | — |
| B | — | 29.769 mm |
| Axial Rating | 30,500 N | — |
| C | — | 22.225 mm |
| Dynamic Rating C1 | 154,000 N | — |
| R(Min.) | — | 3.6 mm |
| Dynamic Rating C90 | 40,000 N | — |
| R1(Min.) | — | 3.2 mm |
| Dynamic Axial Rating Ca90 | 30,500 N | — |
| Basic Load Ratings : Cr | — | 167 kN |
| Dynamic Axial Rating Ca1 | 117,000 N | — |
| Basic Load Ratings : C0R | — | 198 kN |
| Static Radial Rating C0 | 216,000 N | — |
| Fatigue Load Limit : Cu | — | 30.0 kN |
| Extended Dynamic Rating Ce | 0 N | — |
| Limiting Speeds(Grease Lub.) | — | 2700 min-1 |
| Static Axial Rating C0A | 280,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 3600 min-1 |
| Load Center Spread : A | — | 29.8 mm |
| Constant :E | — | 0.44 |
| Axial Load Factors : Y1 | — | 1.35 |
| Axial Load Factors : Y0 | — | 0.74 |
| Da | — | 120.0 mm |
| Db | — | 128.0 mm |
| Ra(Max.) | — | 3.6 mm |
| Rb(Max.) | — | 3.2 mm |
| Mass(Refer.) | — | 1.549 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.