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 | LM78300 | |
| Variant / construction | TS - Tapered Single | |
| Bore diameter | d | 34.987 mm |
| Outside diameter | D | 61.973 mm |
| Width | B | 16.7 mm |
| Basic dynamic load rating | C | 42.5 kN |
| Basic static load rating | C0 | 52.4 kN |
| Mass | ≈m | 0.19 kg |
| Precision class | ABMA Class 4 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.31 | |
| Y1 Factor | 1.35 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.74 | |
| E Factor | 0.44 | |
| Cg Factor | 0.0678 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100052465 | |
| World Assembly Part Number | LM78349_LM78310A | |
| Inner Ring Part Number | LM78349 | |
| Outer Ring Part Number | LM78310A | |
| Drawing Number | A-36322 | |
| Upc | 0053893658827 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:46.313 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TS - Tapered Single | |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 1.3775 in Bore | 2.4399 in OD | 0.6575 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 4 | |
| Number Of Rows | 1 | |
| Tapered Bore | N |
Technical Data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Overall Width | 19.100 mm | |
| Radial Rating | 11,000 N | |
| Axial Rating | 8,380 N | |
| Dynamic Rating C1 | 42,500 N | |
| Dynamic Rating C90 | 11,000 N | |
| Dynamic Axial Rating Ca90 | 8,380 N | |
| Dynamic Axial Rating Ca1 | 32,300 N | |
| Static Radial Rating C0 | 52,400 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 67,900 N |
