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 | HM813800 | |
| Variant / construction | TS - Tapered Single | |
| Bore diameter | d | 71.438 mm |
| Outside diameter | D | 127 mm |
| Width | B | 36.512 mm |
| Basic dynamic load rating | C | 229 kN |
| Basic static load rating | C0 | 256 kN |
| Mass | ≈m | 1.85 kg |
| Precision class | ABMA Class 2 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.16 | |
| Y1 Factor | 1.20 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.66 | |
| E Factor | 0.50 | |
| Cg Factor | 0.1252 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000190040348 | |
| World Assembly Part Number | NP961185_NP639453 | |
| Inner Ring Part Number | NP961185 | |
| Outer Ring Part Number | NP639453 | |
| Drawing Number | A-72506 | |
| Upc | 0085706265137 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:47.277 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TS - Tapered Single | |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 2.8125 in Bore | 5.0000 in OD | 1.4375 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 | 42.112 mm | |
| Radial Rating | 59,400 N | |
| Axial Rating | 51,100 N | |
| Dynamic Rating C1 | 229,000 N | |
| Dynamic Rating C90 | 59,400 N | |
| Dynamic Axial Rating Ca90 | 51,100 N | |
| Dynamic Axial Rating Ca1 | 197,000 N | |
| Static Radial Rating C0 | 256,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 375,000 N |
