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 | LM278800 | |
| Variant / construction | TDI - Tapered Double Inner | |
| Bore diameter | d | 585.788 mm |
| Outside diameter | D | 771.525 mm |
| Width | B | 230.188 mm |
| Basic dynamic load rating | C | 5730 kN |
| Basic static load rating | C0 | 16600 kN |
| Mass | ≈m | 303.69 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 | 0.2906 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100077515 | |
| World Assembly Part Number | LM278849D_LM278810 | |
| Inner Ring Part Number | LM278849D | |
| Outer Ring Part Number | LM278810 | |
| Drawing Number | E-27055 | |
| Upc | 0053893582269 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.683 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TDI - Tapered Double Inner | |
| Construction | Double Row Tapered Roller Bearing Assembly | Imperial Series | 23.0625 in Bore | 30.3750 in OD | 9.0625 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 | 1,490,000 N | |
| Axial Rating | 486,000 N | |
| Dynamic Rating C1 | 5,730,000 N | |
| Dynamic Rating C90 | 1,490,000 N | |
| Dynamic Axial Rating Ca90 | 486,000 N | |
| Dynamic Axial Rating Ca1 | 1,870,000 N | |
| Static Radial Rating C0 | 16,600,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 8,020,000 N |
