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 | 28500 | |
| Variant / construction | TSF - Tapered Single Flanged | |
| Bore diameter | d | 50.8 mm |
| Outside diameter | D | 92.075 mm |
| Width | B | 8.73 mm |
| Basic dynamic load rating | C | 98.9 kN |
| Basic static load rating | C0 | 130 kN |
| Mass | ≈m | 0.73 kg |
| Precision class | ABMA Class 3 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.55 | |
| Y1 Factor | 1.59 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.87 | |
| E Factor | 0.38 | |
| Cg Factor | 0.0912 |
Manufacturer Identity8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100054472 | |
| World Assembly Part Number | 28580_28521-B | |
| Inner Ring Part Number | 28580 | |
| Outer Ring Part Number | 28521-B | |
| Drawing Number | A-14996 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.5 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TSF - Tapered Single Flanged | |
| Construction | Precision Tapered Roller Bearing Assembly | Imperial Series | 2.0000 in Bore | 3.6250 in OD | 0.9688 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 | 26.900 mm | |
| Radial Rating | 25,700 N | |
| Axial Rating | 16,600 N | |
| Dynamic Rating C1 | 98,900 N | |
| Dynamic Rating C90 | 25,700 N | |
| Dynamic Axial Rating Ca90 | 16,600 N | |
| Dynamic Axial Rating Ca1 | 63,900 N | |
| Static Radial Rating C0 | 130,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 143,000 N |
