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| Parameter | TIMKENJHM318448 / JHM31841090 × 155 × 44 mm | KOYOJHM318448/1090 × 155 × 44 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | JHM318448 / JHM318410 | JHM318448/10 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | HM318400 | — |
| Bore diameterd | 90 mm | 90 mm |
| Outside diameterD | 155 mm | 155 mm |
| WidthB | 44 mm | 44 mm |
| Basic dynamic load ratingC | 392 kN | 363 kN |
| Basic static load ratingC0 | 447 kN | 407 kN |
| Fatigue load limitPu | — | 54.8 kN |
| Limiting speednG | — | 2400 r/min |
| Mass≈m | 3.33 kg | 3.37 kg |
| Precision class | ABMA Class N | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.71 | — |
| Y1 Factor | 1.76 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.97 | — |
| E Factor | 0.34 | — |
| Cg Factor | 0.0948 | — |
| 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 | 000000000100160491 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | JHM318448_JHM318410 | — |
| Inner Ring Part Number | JHM318448 | — |
| Outer Ring Part Number | JHM318410 | — |
| Drawing Number | A-35562 | — |
| Upc | 0053893660790 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:47.157 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 3.5433 in Bore | 6.1024 in OD | 1.7323 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class N | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 155.000 mm |
| T | — | 44.000 mm |
| B | — | 44.000 mm |
| C | — | 35.500 mm |
| Overall Width | 48.600 mm | — |
| R(Min.) | — | 3.0 mm |
| Radial Rating | 102,000 N | — |
| R1(Min.) | — | 2.5 mm |
| Axial Rating | 59,400 N | — |
| Basic Load Ratings : Cr | — | 363 kN |
| Dynamic Rating C1 | 392,000 N | — |
| Basic Load Ratings : C0R | — | 407 kN |
| Dynamic Rating C90 | 102,000 N | — |
| Fatigue Load Limit : Cu | — | 54.8 kN |
| Dynamic Axial Rating Ca90 | 59,400 N | — |
| Limiting Speeds(Grease Lub.) | — | 2400 min-1 |
| Dynamic Axial Rating Ca1 | 229,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 3200 min-1 |
| Static Radial Rating C0 | 447,000 N | — |
| Load Center Spread : A | — | 34.5 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.34 |
| Static Axial Rating C0A | 444,000 N | — |
| Axial Load Factors : Y1 | — | 1.76 |
| Axial Load Factors : Y0 | — | 0.97 |
| Da | — | 140.0 mm |
| Db | — | 148.0 mm |
| Ra(Max.) | — | 3.0 mm |
| Rb(Max.) | — | 2.5 mm |
| Mass(Refer.) | — | 3.37 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.