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 | 12500 | |
| Variant / construction | TS - Tapered Single | |
| Bore diameter | d | 20.637 mm |
| Outside diameter | D | 49.225 mm |
| Width | B | 19.845 mm |
| Basic dynamic load rating | C | 43.6 kN |
| Basic static load rating | C0 | 43.2 kN |
| Mass | ≈m | 0.18 kg |
| Precision class | ABMA Class 2 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.81 | |
| Y1 Factor | 1.86 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 1.02 | |
| E Factor | 0.32 | |
| Cg Factor | 0.0495 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100054546 | |
| World Assembly Part Number | 12580_12520 | |
| Inner Ring Part Number | 12580 | |
| Outer Ring Part Number | 12520 | |
| Drawing Number | A-10414 | |
| Upc | 0053893664217 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.063 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TS - Tapered Single | |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 0.8125 in Bore | 1.9380 in OD | 0.7813 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 | 22.145 mm | |
| Radial Rating | 11,300 N | |
| Axial Rating | 6,260 N | |
| Dynamic Rating C1 | 43,600 N | |
| Dynamic Rating C90 | 11,300 N | |
| Dynamic Axial Rating Ca90 | 6,260 N | |
| Dynamic Axial Rating Ca1 | 24,100 N | |
| Static Radial Rating C0 | 43,200 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 40,700 N |