Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Single-row / Inch series | |
| Bore diameter | d | 257.175 mm |
| Outside diameter | D | 342.9 mm |
| Width | B | 57.15 mm |
| Basic dynamic load rating | C | 764 kN |
| Basic static load rating | C0 | 1280 kN |
| Fatigue load limit | Pu | 135 kN |
| Limiting speed | nG | 870 r/min |
| Mass | ≈m | 13.26 kg |
Manufacturer Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | KOYO | |
| Official Class Key | 050-010-020 |
Classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official Category Path | Tapered roller bearings - Single-row - Inch series | |
| Official Classification 1 | Tapered roller bearings / Single-row / Inch series |
Technical Data23 parameters
| Parameter | Symbol | Value |
|---|---|---|
| d | 257.175 mm | |
| D | 342.900 mm | |
| T | 57.150 mm | |
| B | 57.150 mm | |
| C | 44.450 mm | |
| R(Min.) | 6.4 mm | |
| R1(Min.) | 3.2 mm | |
| Basic Load Ratings : Cr | 764 kN | |
| Basic Load Ratings : C0R | 1280 kN | |
| Fatigue Load Limit : Cu | 135 kN | |
| Limiting Speeds(Grease Lub.) | 870 min-1 | |
| Limiting Speeds(Oil Lub.) | 1200 min-1 | |
| Load Center Spread : A | 60.1 mm | |
| Constant :E | 0.35 | |
| Axial Load Factors : Y1 | 1.73 | |
| Axial Load Factors : Y0 | 0.95 | |
| Da | 276.0 mm | |
| Db | 276.0 mm | |
| Da | 320.0 mm | |
| Db | 330.0 mm | |
| Ra(Max.) | 6.4 mm | |
| Rb(Max.) | 3.2 mm | |
| Mass(Refer.) | 13.26 kg |
