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 | 25.4 mm |
| Outside diameter | D | 63.5 mm |
| Width | B | 20.638 mm |
| Basic dynamic load rating | C | 55.7 kN |
| Basic static load rating | C0 | 50.7 kN |
| Fatigue load limit | Pu | 7.3 kN |
| Limiting speed | nG | 6400 r/min |
| Mass | ≈m | 0.312 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 | 25.400 mm | |
| D | 63.500 mm | |
| T | 19.050 mm | |
| B | 20.638 mm | |
| C | 14.288 mm | |
| R(Min.) | 0.8 mm | |
| R1(Min.) | 1.2 mm | |
| Basic Load Ratings : Cr | 55.7 kN | |
| Basic Load Ratings : C0R | 50.7 kN | |
| Fatigue Load Limit : Cu | 7.30 kN | |
| Limiting Speeds(Grease Lub.) | 6400 min-1 | |
| Limiting Speeds(Oil Lub.) | 8600 min-1 | |
| Load Center Spread : A | 13.2 mm | |
| Constant :E | 0.35 | |
| Axial Load Factors : Y1 | 1.71 | |
| Axial Load Factors : Y0 | 0.94 | |
| Da | 32.5 mm | |
| Db | 31.5 mm | |
| Da | 55.0 mm | |
| Db | 59.0 mm | |
| Ra(Max.) | 0.8 mm | |
| Rb(Max.) | 1.2 mm | |
| Mass(Refer.) | 0.312 kg |