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| Parameter | TIMKENA2047 / A212611.986 × 31.991 × 10.008 mm | KOYOA2047/12611.986 × 31.991 × 10.785 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | A2047 / A2126 | A2047/126 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | A2000 | — |
| Bore diameterd | 11.986 mm | 11.986 mm |
| Outside diameterD | 31.991 mm | 31.991 mm |
| WidthB | 10.008 mm | 10.785 mm |
| Basic dynamic load ratingC | 13.6 kN | 13.4 kN |
| Basic static load ratingC0 | 9.23 kN | 9.3 kN |
| Fatigue load limitPu | — | 1.25 kN |
| Limiting speednG | — | 14000 r/min |
| Mass≈m | 0.05 kg | 0.04 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.44 | — |
| Y1 Factor | 1.48 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.81 | — |
| E Factor | 0.41 | — |
| Cg Factor | 0.0308 | — |
| 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 | 000000000100027376 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | KA2047_A2126 | — |
| Inner Ring Part Number | KA2047 | — |
| Outer Ring Part Number | A2126 | — |
| Drawing Number | A-5694 | — |
| Upc | 0053893652313 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.27 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 0.4719 in Bore | 1.2595 in OD | 0.3940 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 31.991 mm |
| T | — | 10.008 mm |
| B | — | 10.785 mm |
| C | — | 7.938 mm |
| Overall Width | 13.085 mm | — |
| R(Min.) | — | 0.8 mm |
| Radial Rating | 3,520 N | — |
| R1(Min.) | — | 1.2 mm |
| Axial Rating | 2,440 N | — |
| Basic Load Ratings : Cr | — | 13.4 kN |
| Dynamic Rating C1 | 13,600 N | — |
| Basic Load Ratings : C0R | — | 9.30 kN |
| Dynamic Rating C90 | 3,520 N | — |
| Fatigue Load Limit : Cu | — | 1.25 kN |
| Dynamic Axial Rating Ca90 | 2,440 N | — |
| Limiting Speeds(Grease Lub.) | — | 14000 min-1 |
| Dynamic Axial Rating Ca1 | 9,410 N | — |
| Limiting Speeds(Oil Lub.) | — | 19000 min-1 |
| Static Radial Rating C0 | 9,230 N | — |
| Load Center Spread : A | — | 7.1 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.40 |
| Static Axial Rating C0A | 10,900 N | — |
| Axial Load Factors : Y1 | — | 1.48 |
| Axial Load Factors : Y0 | — | 0.82 |
| Da | — | 26.0 mm |
| Db | — | 29.0 mm |
| Ra(Max.) | — | 0.8 mm |
| Rb(Max.) | — | 1.2 mm |
| Mass(Refer.) | — | 0.04 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.