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 | 745 | |
| Variant / construction | TS - Tapered Single | |
| Bore diameter | d | 80 mm |
| Outside diameter | D | 150.089 mm |
| Width | B | 44.45 mm |
| Basic dynamic load rating | C | 318 kN |
| Basic static load rating | C0 | 417 kN |
| Mass | ≈m | 3.49 kg |
| Precision class | ABMA Class 2 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.80 | |
| Y1 Factor | 1.84 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 1.01 | |
| E Factor | 0.33 | |
| Cg Factor | 0.0898 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100071997 | |
| World Assembly Part Number | 748_742 | |
| Inner Ring Part Number | 748 | |
| Outer Ring Part Number | 742 | |
| Drawing Number | A-13939 | |
| Upc | 0013992338716 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.5 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TS - Tapered Single | |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 3.1496 in Bore | 5.9090 in OD | 1.7500 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 | 49.972 mm | |
| Radial Rating | 82,400 N | |
| Axial Rating | 45,900 N | |
| Dynamic Rating C1 | 318,000 N | |
| Dynamic Rating C90 | 82,400 N | |
| Dynamic Axial Rating Ca90 | 45,900 N | |
| Dynamic Axial Rating Ca1 | 177,000 N | |
| Static Radial Rating C0 | 417,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 395,000 N |
