Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | HM266400 | |
| Variant / construction | TDO - Tapered Double Outer | |
| Bore diameter | d | 384.175 mm |
| Outside diameter | D | 546.1 mm |
| Width | B | 222.25 mm |
| Basic dynamic load rating | C | 4220 kN |
| Basic static load rating | C0 | 8140 kN |
| Mass | ≈m | 159.38 kg |
| Precision class | ABMA Class 2 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.76 | |
| Y1 Factor | 2.03 | |
| Y2 Factor | 3.02 | |
| Y0 Factor | 1.98 | |
| E Factor | 0.33 | |
| Cg Factor | 0.2099 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100077861 | |
| World Assembly Part Number | HM266449H_HM266410CD | |
| Inner Ring Part Number | HM266449H | |
| Outer Ring Part Number | HM266410CD | |
| Drawing Number | E-38848 | |
| Upc | 0053893753584 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:48.503 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TDO - Tapered Double Outer | |
| Construction | Double Row Tapered Roller Bearing Assembly | Imperial Series | 15.1250 in Bore | 21.5000 in OD | 8.7500 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | |
| Number Of Rows | 2 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 0.000 mm | |
| Radial Rating | 1,090,000 N | |
| Axial Rating | 358,000 N | |
| Dynamic Rating C1 | 4,220,000 N | |
| Dynamic Rating C90 | 1,090,000 N | |
| Dynamic Axial Rating Ca90 | 358,000 N | |
| Dynamic Axial Rating Ca1 | 1,380,000 N | |
| Static Radial Rating C0 | 8,140,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 3,940,000 N |
