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| Parameter | TIMKEN938 / 932114.3 × 212.725 × 66.675 mm | KOYO938/932114.3 × 212.725 × 66.675 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | 938 / 932 | 938/932 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | 935 | — |
| Bore diameterd | 114.3 mm | 114.3 mm |
| Outside diameterD | 212.725 mm | 212.725 mm |
| WidthB | 66.675 mm | 66.675 mm |
| Basic dynamic load ratingC | 572 kN | 563 kN |
| Basic static load ratingC0 | 786 kN | 674 kN |
| Fatigue load limitPu | — | 84.1 kN |
| Limiting speednG | — | 1800 r/min |
| Mass≈m | 9.89 kg | 10.03 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.79 | — |
| Y1 Factor | 1.84 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 1.01 | — |
| E Factor | 0.33 | — |
| Cg Factor | 0.1153 | — |
| 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 | 000000000100156747 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | 938_932 | — |
| Inner Ring Part Number | 938 | — |
| Outer Ring Part Number | 932 | — |
| Drawing Number | B-41462 | — |
| Upc | 0053893652214 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.667 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 4.5000 in Bore | 8.3750 in OD | 2.6250 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 212.725 mm |
| T | — | 66.675 mm |
| B | — | 66.675 mm |
| C | — | 53.975 mm |
| Overall Width | 74.775 mm | — |
| R(Min.) | — | 7.1 mm |
| Radial Rating | 148,000 N | — |
| R1(Min.) | — | 3.2 mm |
| Axial Rating | 82,700 N | — |
| Basic Load Ratings : Cr | — | 563 kN |
| Dynamic Rating C1 | 572,000 N | — |
| Basic Load Ratings : C0R | — | 674 kN |
| Dynamic Rating C90 | 148,000 N | — |
| Fatigue Load Limit : Cu | — | 84.1 kN |
| Dynamic Axial Rating Ca90 | 82,700 N | — |
| Limiting Speeds(Grease Lub.) | — | 1800 min-1 |
| Dynamic Axial Rating Ca1 | 319,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 2400 min-1 |
| Static Radial Rating C0 | 786,000 N | — |
| Load Center Spread : A | — | 47.6 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.33 |
| Static Axial Rating C0A | 746,000 N | — |
| Axial Load Factors : Y1 | — | 1.84 |
| Axial Load Factors : Y0 | — | 1.01 |
| Da | — | 187.0 mm |
| Db | — | 193.0 mm |
| Ra(Max.) | — | 7.1 mm |
| Rb(Max.) | — | 3.2 mm |
| Mass(Refer.) | — | 10.03 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.