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| Parameter | TIMKENL305649 / L30561050.8 × 80.962 × 18.258 mm | KOYOL305649R/1050.8 × 80.962 × 18.258 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | L305649 / L305610 | L305649R/10 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | L305600 | — |
| Bore diameterd | 50.8 mm | 50.8 mm |
| Outside diameterD | 80.962 mm | 80.962 mm |
| WidthB | 18.258 mm | 18.258 mm |
| Basic dynamic load ratingC | 60.8 kN | 67.8 kN |
| Basic static load ratingC0 | 88.8 kN | 81.1 kN |
| Fatigue load limitPu | — | 11.8 kN |
| Limiting speednG | — | 4600 r/min |
| Mass≈m | 0.35 kg | 0.347 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.64 | — |
| Y1 Factor | 1.69 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.93 | — |
| E Factor | 0.36 | — |
| Cg Factor | 0.0841 | — |
| 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 | 000000000100164934 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | L305649_L305610 | — |
| Inner Ring Part Number | L305649 | — |
| Outer Ring Part Number | L305610 | — |
| Drawing Number | A-14906 | — |
| Upc | 0053893660714 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:46.733 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 2.0000 in Bore | 3.1875 in OD | 0.7188 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 80.962 mm |
| T | — | 18.258 mm |
| B | — | 18.258 mm |
| C | — | 14.288 mm |
| Overall Width | 20.758 mm | — |
| R(Min.) | — | 1.6 mm |
| Radial Rating | 15,800 N | — |
| R1(Min.) | — | 1.6 mm |
| Axial Rating | 9,590 N | — |
| Basic Load Ratings : Cr | — | 67.8 kN |
| Dynamic Rating C1 | 60,800 N | — |
| Basic Load Ratings : C0R | — | 81.1 kN |
| Dynamic Rating C90 | 15,800 N | — |
| Fatigue Load Limit : Cu | — | 11.8 kN |
| Dynamic Axial Rating Ca90 | 9,590 N | — |
| Limiting Speeds(Grease Lub.) | — | 4600 min-1 |
| Dynamic Axial Rating Ca1 | 37,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 6100 min-1 |
| Static Radial Rating C0 | 88,800 N | — |
| Load Center Spread : A | — | 16.0 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.35 |
| Static Axial Rating C0A | 92,000 N | — |
| Axial Load Factors : Y1 | — | 1.69 |
| Axial Load Factors : Y0 | — | 0.93 |
| Da | — | 73.0 mm |
| Db | — | 77.0 mm |
| Ra(Max.) | — | 1.6 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 0.347 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.