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 | HM259000 | |
| Variant / construction | TS - Tapered Single | |
| Bore diameter | d | 317.5 mm |
| Outside diameter | D | 447.675 mm |
| Width | B | 85.725 mm |
| Basic dynamic load rating | C | 1680 kN |
| Basic static load rating | C0 | 3140 kN |
| Mass | ≈m | 41.97 kg |
| Precision class | ABMA Class 2 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.74 | |
| Y1 Factor | 1.79 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.99 | |
| E Factor | 0.33 | |
| Cg Factor | 0.1863 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000190004591 | |
| World Assembly Part Number | HM259049_HM259010 | |
| Inner Ring Part Number | HM259049 | |
| Outer Ring Part Number | HM259010 | |
| Drawing Number | C-23568 | |
| Upc | 0013992323194 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:46.323 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TS - Tapered Single | |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 12.5000 in Bore | 17.6250 in OD | 3.3750 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | |
| Number Of Rows | 1 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 95.825 mm | |
| Radial Rating | 435,000 N | |
| Axial Rating | 249,000 N | |
| Dynamic Rating C1 | 1,680,000 N | |
| Dynamic Rating C90 | 435,000 N | |
| Dynamic Axial Rating Ca90 | 249,000 N | |
| Dynamic Axial Rating Ca1 | 961,000 N | |
| Static Radial Rating C0 | 3,140,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 3,060,000 N |
