Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Four-row tapered roller bearings | |
| Bore diameter | d | 203.2 mm |
| Outside diameter | D | 317.5 mm |
| Width | B | 266.7 mm |
| Basic dynamic load rating | C | 2220 kN |
| Basic static load rating | C0 | 4540 kN |
| Fatigue load limit | Pu | 489 kN |
| Mass | ≈m | 78.8 kg |
Manufacturer Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | KOYO | |
| Official Class Key | 140-020-000 |
Classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official Category Path | Rolling mill roll neck bearings - Four-row tapered roller bearings | |
| Official Classification 1 | Rolling mill roll neck bearings / Four-row tapered roller bearings |
Technical Data19 parameters
| Parameter | Symbol | Value |
|---|---|---|
| d | 203.200 mm | |
| D | 317.500 mm | |
| T | 266.700 mm | |
| W | 266.700 mm | |
| R(Min.) | 3.2 mm | |
| R1(Min.) | 1.6 mm | |
| Basic Load Ratings : Cr | 2220 kN | |
| Basic Load Ratings : C0R | 4540 kN | |
| Fatigue Load Limit : Cu | 489 kN | |
| Axial Load Factors : Y2 | 1.29 mm | |
| Axial Load Factors : Y3 | 1.92 | |
| Axial Load Factors : Y0 | 1.26 | |
| Constant E | 0.52 | |
| Da(Min.) | 223 mm | |
| Da(Max.) | 278 mm | |
| S(Min.) | 6.5 mm | |
| Ra(Max.) | 3.2 mm | |
| Rb(Max.) | 1.6 mm | |
| Mass(Refer.) | 78.8 kg |
