Choose the exact products yourself
CUSTOM / 08 MAX
Custom Comparison
Search a designation, choose up to eight exact suffix variants, and build your own side-by-side technical table.
Build your own set
Choose exact variants
For an automatic one-result-per-brand view, use Same-model Comparison. This page is for deliberate manual selection.
Auto-compare M270749 by brand →Model matches
Select products
The first result per loaded brand is preselected. Choose up to eight exact variants and update the table.
Technical comparison
2 products side by side
A dash means that the loaded manufacturer source did not provide that field. It does not mean the feature is absent.
| Parameter | TIMKENM270749A-902B5447.675 × 635 × 257.175 mm | KOYOM270749D/710/710D447.675 × 635 × 463.55 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | TIMKEN | KOYO |
| Designation | M270749A-902B5 | M270749D/710/710D |
| Product family | TDO - Tapered Double Outer | Four-row tapered roller bearings |
| Detailed type | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | M270700 | — |
| Bore diameterd | 447.675 mm | 447.675 mm |
| Outside diameterD | 635 mm | 635 mm |
| WidthB | 257.175 mm | 463.55 mm |
| Basic dynamic load ratingC | 5370 kN | 8440 kN |
| Basic static load ratingC0 | 11800 kN | 21000 kN |
| Fatigue load limitPu | — | 1830 kN |
| Mass≈m | 240.86 kg | 472 kg |
| Precision class | ABMA Class 2 | — |
| Sealing | Open | — |
| Cage | Steel cage | — |
| Calculation Factors | ||
| K Factor | 1.76 | — |
| Y1 Factor | 2.03 | — |
| Y2 Factor | 3.02 | — |
| Y0 Factor | 1.98 | — |
| E Factor | 0.33 | — |
| Cg Factor | 0.2406 | — |
| 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 | 000000000190057062 | — |
| Official Class Key | — | 140-020-000 |
| World Assembly Part Number | M270749A_M270710CD | — |
| Inner Ring Part Number | M270749A | — |
| Outer Ring Part Number | M270710CD | — |
| Drawing Number | E-44342 | — |
| Upc | 0013992369963 | — |
| Official Source System | CORE BP - DS DF | — |
| Official Last Run | 2026-08-23T20:02:48.503 | — |
| Product Identity | ||
| Type Description | TDO - Tapered Double Outer | — |
| Construction | Double Row Tapered Roller Bearing Assembly | Imperial Series | 17.6250 in Bore | 25.0000 in OD | 10.1250 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 2 | — |
| Tapered Bore | N | — |
| Technical Data | ||
| d | — | 635.000 mm |
| T | — | 463.550 mm |
| W | — | 463.550 mm |
| R(Min.) | — | 6.4 mm |
| R1(Min.) | — | 3.2 mm |
| Overall Width | 0.000 mm | — |
| Basic Load Ratings : Cr | — | 8440 kN |
| Radial Rating | 1,390,000 N | — |
| Basic Load Ratings : C0R | — | 21000 kN |
| Axial Rating | 455,000 N | — |
| Fatigue Load Limit : Cu | — | 1830 kN |
| Dynamic Rating C1 | 5,370,000 N | — |
| Axial Load Factors : Y2 | — | 2.03 mm |
| Dynamic Rating C90 | 1,390,000 N | — |
| Axial Load Factors : Y3 | — | 3.02 |
| Dynamic Axial Rating Ca90 | 455,000 N | — |
| Axial Load Factors : Y0 | — | 1.98 |
| Dynamic Axial Rating Ca1 | 1,750,000 N | — |
| Constant E | — | 0.33 |
| Static Radial Rating C0 | 11,800,000 N | — |
| Da(Min.) | — | 491 mm |
| Extended Dynamic Rating Ce | 0 N | — |
| Da(Max.) | — | 584 mm |
| Static Axial Rating C0A | 5,710,000 N | — |
| S(Min.) | — | 8 mm |
| Ra(Max.) | — | 6.4 mm |
| Rb(Max.) | — | 3.2 mm |
| Mass(Refer.) | — | 472 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.