Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Double-row / Shielded ZZ | |
| Bore diameter | d | 50 mm |
| Outside diameter | D | 90 mm |
| Width | B | 30.2 mm |
| Basic dynamic load rating | C | 55.2 kN |
| Basic static load rating | C0 | 37.9 kN |
| Fatigue load limit | Pu | 1.95 kN |
| Limiting speed | nG | 4300 r/min |
| Mass | ≈m | 0.67 kg |
| Sealing | Shielded ZZ |
Manufacturer Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | KOYO | |
| Official Class Key | 020-030-000 |
Classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official Category Path | Angular contact ball bearings - Double-row - Shielded ZZ | |
| Official Classification 1 | Angular contact ball bearings / Double-row / Shielded ZZ |
Technical Data15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| d | 50 mm | |
| D | 90 mm | |
| B | 30.2 mm | |
| R(Min.) | 1.1 mm | |
| Basic Load Ratings : Cr | 55.2 kN | |
| Basic Load Ratings : C0R | 37.9 kN | |
| Fatigue Load Limit : Cu | 1.95 kN | |
| Limiting Speeds(Grease Lub.) | 4300 min-1 | |
| Limiting Speeds(Oil Lub.) | 5600 min-1 | |
| Load Center Spread : A | 44.5 mm | |
| Da(Min.) | 57 mm | |
| Da(Max.) | 58.9 mm | |
| Da(Max.) | 83 mm | |
| Ra(Max.) | 1 mm | |
| Mass(Refer.) | 0.670 kg |
