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 / NJ | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 52 mm |
| Width | B | 21 mm |
| Basic dynamic load rating | C | 38 kN |
| Basic static load rating | C0 | 30.2 kN |
| Fatigue load limit | Pu | 3.6 kN |
| Limiting speed | nG | 11000 r/min |
| Mass | ≈m | 0.219 kg |
Manufacturer Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | KOYO | |
| Official Class Key | 040-010-000 |
Classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official Category Path | Cylindrical roller bearings - Single-row - NJ | |
| Official Classification 1 | Cylindrical roller bearings / Single-row / NJ |
Technical Data26 parameters
| Parameter | Symbol | Value |
|---|---|---|
| d | 20 mm | |
| D | 52 mm | |
| B | 21 mm | |
| R(Min.) | 1.1 mm | |
| R1(Min.) | 0.6 mm | |
| Fw | 28.5 mm | |
| Ew | - mm | |
| Basic Load Ratings : Cr | 38.0 kN | |
| Basic Load Ratings : C0R | 30.2 kN | |
| Fatigue Load Limit : Cu | 3.60 kN | |
| Limiting Speeds(Grease Lub.) | 11000 min-1 | |
| Limiting Speeds(Oil Lub.) | 16000 min-1 | |
| Sd1 | - mm | |
| B1 | - mm | |
| B2 | - mm | |
| Da(Min.) | - mm | |
| Db(Min.) | 24 mm | |
| Db(Max.) | 27 mm | |
| Dc(Min.) | - mm | |
| Dd(Min.) | - mm | |
| Da(Max.) | 45.5 mm | |
| Db(Max.) | - mm | |
| Db(Min.) | - mm | |
| Ra(Max.) | 1 mm | |
| Rb(Max.) | 0.6 mm | |
| Mass(Refer.) | 0.219 kg |
