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 | 8500 | |
| Variant / construction | TSF - Tapered Single Flanged | |
| Bore diameter | d | 241.3 mm |
| Outside diameter | D | 327.025 mm |
| Width | B | 25.4 mm |
| Basic dynamic load rating | C | 527 kN |
| Basic static load rating | C0 | 1070 kN |
| Mass | ≈m | 11.71 kg |
| Precision class | ABMA Class 3 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.44 | |
| Y1 Factor | 1.48 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.81 | |
| E Factor | 0.41 | |
| Cg Factor | 0.1401 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100040318 | |
| World Assembly Part Number | 8578_8520-B | |
| Inner Ring Part Number | 8578 | |
| Outer Ring Part Number | 8520-B | |
| Drawing Number | B-26409 | |
| Upc | 0053893154756 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.663 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TSF - Tapered Single Flanged | |
| Construction | Precision Tapered Roller Bearing Assembly | Imperial Series | 9.5000 in Bore | 12.8750 in OD | 2.0625 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 3 | |
| Number Of Rows | 1 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 55.688 mm | |
| Radial Rating | 137,000 N | |
| Axial Rating | 95,200 N | |
| Dynamic Rating C1 | 527,000 N | |
| Dynamic Rating C90 | 137,000 N | |
| Dynamic Axial Rating Ca90 | 95,200 N | |
| Dynamic Axial Rating Ca1 | 367,000 N | |
| Static Radial Rating C0 | 1,070,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 1,260,000 N |
