Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Combined needle roller bearings / Ball thrust series / NAXK,NAXK.Z | |
| Outside diameter | D | 21 mm |
| Basic dynamic load rating | C | 7.5 kN |
| Basic static load rating | C0 | 8.5 kN |
| Fatigue load limit | Pu | 1.3 kN |
| Limiting speed | nG | 9000 r/min |
| Mass | ≈m | 0.047 kg |
Manufacturer Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Brand | KOYO | |
| Official Class Key | 090-050-010 |
Classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official Category Path | Needle roller bearings - Combined needle roller bearings - Ball thrust series - NAXK,NAXK.Z | |
| Official Classification 1 | Needle roller bearings / Combined needle roller bearings / Ball thrust series / NAXK,NAXK.Z |
Technical Data17 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Fw | 12 mm | |
| D | 21 mm | |
| C | 23 mm | |
| Dw(E7) | 12 mm | |
| Da | 27 mm | |
| C1 | 9 mm | |
| C2 | 6.5 mm | |
| R(Min.) | 0.3 mm | |
| Limiting Speeds(Oil Lub.) | 9000 min-1 | |
| Basic Load Ratings : Cr | 7.5 kN | |
| Basic Load Ratings : C0R | 8.5 kN | |
| Basic Load Ratings Ca | 10.7 kN | |
| Basic Load Ratings C0A | 15.4 kN | |
| Fatigue Load Limit : Cu(Radial) | 1.30 kN | |
| Fatigue Load Limit : Cu(Thrust) | 0.690 kN | |
| Used With Inner Ring No. | JR9x12x16 | |
| Mass(Refer.) | 0.047 kg |
