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 | 3800 | |
| Variant / construction | TS - Tapered Single | |
| Bore diameter | d | 36.512 mm |
| Outside diameter | D | 85.725 mm |
| Width | B | 30.162 mm |
| Basic dynamic load rating | C | 124 kN |
| Basic static load rating | C0 | 148 kN |
| Mass | ≈m | 0.88 kg |
| Precision class | ABMA Class 2 | |
| Sealing | Open | |
| Cage | Steel cage |
Calculation Factors6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| K Factor | 1.45 | |
| Y1 Factor | 1.49 | |
| Y2 Factor | 0.00 | |
| Y0 Factor | 0.82 | |
| E Factor | 0.40 | |
| Cg Factor | 0.0873 |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | Timken | |
| Material Number | 000000000100375741 | |
| World Assembly Part Number | 3878_3820 | |
| Inner Ring Part Number | 3878 | |
| Outer Ring Part Number | 3820 | |
| Drawing Number | A-6278 | |
| Upc | 0013992331908 | |
| Official Source System | CORE BP - DS DF | |
| Official Last Run | 2026-08-23T20:02:46.737 |
Product Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Type Description | TS - Tapered Single | |
| Construction | Single Row Tapered Roller Bearing Assembly | Imperial Series | 1.4375 in Bore | 3.3750 in OD | 1.1875 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 | 33.962 mm | |
| Radial Rating | 32,200 N | |
| Axial Rating | 22,200 N | |
| Dynamic Rating C1 | 124,000 N | |
| Dynamic Rating C90 | 32,200 N | |
| Dynamic Axial Rating Ca90 | 22,200 N | |
| Dynamic Axial Rating Ca1 | 85,500 N | |
| Static Radial Rating C0 | 148,000 N | |
| Extended Dynamic Rating Ce | 0 N | |
| Static Axial Rating C0A | 173,000 N |