Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | NCS-239458 | |
| Variant / construction | Cylindrical 1-Row | |
| Bore diameter | d | 317.5 mm |
| Outside diameter | D | 419.1 mm |
| Width | B | 50.8 mm |
| Basic dynamic load rating | C | 774 kN |
| Basic static load rating | C0 | 1250 kN |
| Mass | ≈m | 18.3 kg |
| Sealing | Open | |
| Cage | Window Brass cage |
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 | 0.1673 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000190034904 | |
| World Assembly Part Number | 125RIF550 | |
| Inner Ring Part Number | 125ARN550 | |
| Outer Ring Part Number | ERF550 | |
| Drawing Number | M948645 | |
| Upc | 0087796136205 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.757 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | Cylindrical 1-Row | |
| Construction | Single Row Cylindrical Roller Bearing | Imperial Series | 12.5000 in Bore | 16.5000 in OD | 2.0000 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C0 Clearance | |
| Number Of Rows | 1 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 0.000 mm | |
| Radial Rating | 774,000 N | |
| Axial Rating | 0 N | |
| Dynamic Rating C1 | 774,000 N | |
| Dynamic Rating C90 | 0 N | |
| Dynamic Axial Rating Ca90 | 0 N | |
| Dynamic Axial Rating Ca1 | 0 N | |
| Static Radial Rating C0 | 1,250,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 0 N |
