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| Parameter | TIMKEN787 / 772104.775 × 180.975 × 47.625 mm | KOYO787/772104.775 × 180.975 × 48.006 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 787 / 772 | 787/772 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 775 | — |
| Bore diameterd | 104.775 mm | 104.775 mm |
| Outside diameterD | 180.975 mm | 180.975 mm |
| WidthB | 47.625 mm | 48.006 mm |
| Basic dynamic load ratingC | 346 kN | 362 kN |
| Basic static load ratingC0 | 495 kN | 438 kN |
| Fatigue load limitPu | — | 56.6 kN |
| Limiting speednG | — | 2100 r/min |
| Mass≈m | 4.77 kg | 4.79 kg |
| Calculation Factors | ||
| K Factor | 1.51 | — |
| Y1 Factor | 1.56 | — |
| Y2 Factor | -1.00 | — |
| Y0 Factor | 0.86 | — |
| E Factor | 0.39 | — |
| Cg Factor | 0.1067 | — |
| 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 | 100034825100025979 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | 787 / 772 | — |
| Inner Ring Part Number | 787 | — |
| Outer Ring Part Number | 772 | — |
| 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 | — | 180.975 mm |
| Overall Width | 49.806 mm | — |
| T | — | 47.625 mm |
| Radial Rating | 89,700 N | — |
| B | — | 48.006 mm |
| Axial Rating | 59,200 N | — |
| C | — | 38.100 mm |
| Dynamic Rating C1 | 346,000 N | — |
| R(Min.) | — | 7.1 mm |
| Dynamic Rating C90 | 89,700 N | — |
| R1(Min.) | — | 3.2 mm |
| Dynamic Axial Rating Ca90 | 59,200 N | — |
| Basic Load Ratings : Cr | — | 362 kN |
| Dynamic Axial Rating Ca1 | 228,000 N | — |
| Basic Load Ratings : C0R | — | 438 kN |
| Static Radial Rating C0 | 495,000 N | — |
| Fatigue Load Limit : Cu | — | 56.6 kN |
| Extended Dynamic Rating Ce | 0 N | — |
| Limiting Speeds(Grease Lub.) | — | 2100 min-1 |
| Static Axial Rating C0A | 556,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 2800 min-1 |
| Load Center Spread : A | — | 39.5 mm |
| Constant :E | — | 0.39 |
| Axial Load Factors : Y1 | — | 1.56 |
| Axial Load Factors : Y0 | — | 0.86 |
| Da | — | 161.0 mm |
| Db | — | 168.0 mm |
| Ra(Max.) | — | 7.1 mm |
| Rb(Max.) | — | 3.2 mm |
| Mass(Refer.) | — | 4.79 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.