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 | 320 mm |
| Outside diameter | D | 440 mm |
| Width | B | 335 mm |
| Basic dynamic load rating | C | 3850 kN |
| Basic static load rating | C0 | 8750 kN |
| Fatigue load limit | Pu | 877 kN |
| Mass | ≈m | 149 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 | 320 mm | |
| D | 440 mm | |
| T | 335 mm | |
| W | 335 mm | |
| R(Min.) | 2 mm | |
| R1(Min.) | 2.5 mm | |
| Basic Load Ratings : Cr | 3850 kN | |
| Basic Load Ratings : C0R | 8750 kN | |
| Fatigue Load Limit : Cu | 877 kN | |
| Axial Load Factors : Y2 | 1.68 mm | |
| Axial Load Factors : Y3 | 2.50 | |
| Axial Load Factors : Y0 | 1.64 | |
| Constant E | 0.40 | |
| Da(Min.) | 341 mm | |
| Da(Max.) | 408 mm | |
| S(Min.) | 5.5 mm | |
| Ra(Max.) | 2 mm | |
| Rb(Max.) | 2 mm | |
| Mass(Refer.) | 149 kg |
