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| Parameter | TIMKEN67782W-90188168.275 × 247.65 × 16.67 mm | KOYO67782D/20/21D168.275 × 247.65 × 192.088 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 67782W-90188 | 67782D/20/21D |
| Product family | TSF - Tapered Single Flanged | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | 67700 | — |
| Bore diameterd | 168.275 mm | 168.275 mm |
| Outside diameterD | 247.65 mm | 247.65 mm |
| WidthB | 16.67 mm | 192.088 mm |
| Basic dynamic load ratingC | 383 kN | 1270 kN |
| Basic static load ratingC0 | 779 kN | 2800 kN |
| Fatigue load limitPu | — | 319 kN |
| Mass≈m | 8.26 kg | 31.7 kg |
| Precision class | ABMA Class 0 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.33 | — |
| Y1 Factor | 1.36 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.75 | — |
| E Factor | 0.44 | — |
| Cg Factor | 0.1214 | — |
| Classification | ||
| Official Category Path | — | Rolling mill roll neck bearings - Four-row tapered roller bearings |
| Official Classification 1 | — | Rolling mill roll neck bearings / Four-row tapered roller bearings |
| Manufacturer Identity | ||
| Material Number | 000000000100004888 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | 67782W_67720-B | — |
| Inner Ring Part Number | 67782W | — |
| Outer Ring Part Number | 67720-B | — |
| Drawing Number | B-52765 | — |
| Upc | 0053893369587 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.29 | — |
| Product Identity | ||
| Type Description | TSF - Tapered Single Flanged | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 6.6250 in Bore | 9.7500 in OD | 1.8750 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 0 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 247.650 mm |
| T | — | 192.088 mm |
| W | — | 192.088 mm |
| R(Min.) | — | 3.2 mm |
| R1(Min.) | — | 1.6 mm |
| Overall Width | 50.425 mm | — |
| Basic Load Ratings : Cr | — | 1270 kN |
| Radial Rating | 99,200 N | — |
| Basic Load Ratings : C0R | — | 2800 kN |
| Axial Rating | 74,600 N | — |
| Fatigue Load Limit : Cu | — | 319 kN |
| Dynamic Rating C1 | 383,000 N | — |
| Axial Load Factors : Y2 | — | 1.54 mm |
| Dynamic Rating C90 | 99,200 N | — |
| Axial Load Factors : Y3 | — | 2.29 |
| Dynamic Axial Rating Ca90 | 74,600 N | — |
| Axial Load Factors : Y0 | — | 1.50 |
| Dynamic Axial Rating Ca1 | 288,000 N | — |
| Constant E | — | 0.44 |
| Static Radial Rating C0 | 779,000 N | — |
| Da(Min.) | — | 189 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Da(Max.) | — | 226 mm |
| Static Axial Rating C0A | 998,000 N | — |
| S(Min.) | — | 5 mm |
| Ra(Max.) | — | 3.2 mm |
| Rb(Max.) | — | 1.6 mm |
| Mass(Refer.) | — | 31.7 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.