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| Parameter | TIMKENHM88547 / HM8851033.337 × 73.025 × 29.37 mm | KOYOHM88547/1033.338 × 73.025 × 27.783 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | HM88547 / HM88510 | HM88547/10 |
| Product family | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | HM88500 | — |
| Bore diameterd | 33.337 mm | 33.338 mm |
| Outside diameterD | 73.025 mm | 73.025 mm |
| WidthB | 29.37 mm | 27.783 mm |
| Basic dynamic load ratingC | 103 kN | 93 kN |
| Basic static load ratingC0 | 111 kN | 101 kN |
| Fatigue load limitPu | — | 14.2 kN |
| Limiting speednG | — | 5600 r/min |
| Mass≈m | 0.6 kg | 0.598 kg |
| Precision class | ABMA Class 7 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.07 | — |
| Y1 Factor | 1.10 | — |
| Y2 Factor | 0.00 | — |
| Y0 Factor | 0.60 | — |
| E Factor | 0.55 | — |
| Cg Factor | 0.0857 | — |
| 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 | 000000000100005031 | — |
| Official Class Key | — | 050-010-020 |
| World Assembly Part Number | HM88547_HM88510 | — |
| Inner Ring Part Number | HM88547 | — |
| Outer Ring Part Number | HM88510 | — |
| Drawing Number | A-22617 | — |
| Upc | 0053893041025 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:46.31 | — |
| Product Identity | ||
| Type Description | TS - Tapered Single | — |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 1.3125 in Bore | 2.8750 in OD | 1.1563 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 7 | — |
| Number Of Rows | 1 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 73.025 mm |
| T | — | 29.370 mm |
| B | — | 27.783 mm |
| C | — | 23.020 mm |
| Overall Width | 31.783 mm | — |
| R(Min.) | — | 0.8 mm |
| Radial Rating | 26,700 N | — |
| R1(Min.) | — | 3.2 mm |
| Axial Rating | 25,000 N | — |
| Basic Load Ratings : Cr | — | 93.0 kN |
| Dynamic Rating C1 | 103,000 N | — |
| Basic Load Ratings : C0R | — | 101 kN |
| Dynamic Rating C90 | 26,700 N | — |
| Fatigue Load Limit : Cu | — | 14.2 kN |
| Dynamic Axial Rating Ca90 | 25,000 N | — |
| Limiting Speeds(Grease Lub.) | — | 5600 min-1 |
| Dynamic Axial Rating Ca1 | 96,400 N | — |
| Limiting Speeds(Oil Lub.) | — | 7500 min-1 |
| Static Radial Rating C0 | 111,000 N | — |
| Load Center Spread : A | — | 23.4 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Constant :E | — | 0.55 |
| Static Axial Rating C0A | 176,000 N | — |
| Axial Load Factors : Y1 | — | 1.10 |
| Axial Load Factors : Y0 | — | 0.60 |
| Da | — | 59.0 mm |
| Db | — | 70.0 mm |
| Ra(Max.) | — | 0.8 mm |
| Rb(Max.) | — | 3.2 mm |
| Mass(Refer.) | — | 0.598 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.