Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | EX26258 | |
| Variant / construction | Cylindrical 1-Row | |
| Bore diameter | d | 280 mm |
| Outside diameter | D | 350 mm |
| Width | B | 33 mm |
| Basic dynamic load rating | C | 344 kN |
| Basic static load rating | C0 | 646 kN |
| Mass | ≈m | 7 kg |
| Sealing | Open |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 0.00 | |
| Y1 Factor | 0.00 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.00 | |
| E Factor | 0.00 | |
| Cg Factor | 0.1449 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000190046605 | |
| World Assembly Part Number | NCF1856V | |
| Inner Ring Part Number | 280ARNAF18 | |
| Outer Ring Part Number | 280ERFAF18 | |
| Drawing Number | M954431 | |
| Upc | 0013992253781 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.753 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | Cylindrical 1-Row | |
| Construction | Full Complement Single Row Cylindrical Roller Bearing | Imperial Series | 11.0236 in Bore | 13.7795 in OD | 1.2992 in Width | Open | Cylindrical Bore | C0 Clearance | |
| Number Of Rows | 1 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 0.000 mm | |
| Radial Rating | 344,000 N | |
| Axial Rating | 0 N | |
| Dynamic Rating C1 | 344,000 N | |
| Dynamic Rating C90 | 0 N | |
| Dynamic Axial Rating Ca90 | 0 N | |
| Dynamic Axial Rating Ca1 | 0 N | |
| Static Radial Rating C0 | 646,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 0 N |