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| Parameter | INAK63X70X21-A/0-763 × 70 × 21 mm | KOYOK63X71X20Needle roller bearings |
|---|---|---|
| Comparable specifications | ||
| Brand | INA | KOYO |
| Designation | K63X70X21-A/0-7 | K63X71X20 |
| Product family | — | Radial needle roller and cage assemblies / Metric series / K,K.ZW |
| Detailed type | Needle roller cage assembly | Needle roller bearings |
| Series | K63X70X21 | — |
| Bore diameterd | 63 mm | — |
| Outside diameterD | 70 mm | — |
| WidthB | 21 mm | — |
| Basic dynamic load ratingC | 45.5 kN | 41.4 kN |
| Basic static load ratingC0 | 101 kN | 79.4 kN |
| Fatigue load limitPu | 13.4 kN | 12.7 kN |
| Reference speednref | 4150 r/min | — |
| Limiting speednG | 7400 r/min | 4400 r/min |
| Mass≈m | 0.068 kg | 0.07 kg |
| Minimum operating temperatureTmin | -30 °C | — |
| Maximum operating temperatureTmax | 140 °C | — |
| Classification | ||
| Official Category Path | — | Needle roller bearings - Radial needle roller and cage assemblies - Metric series - K,K.ZW |
| Official Classification 1 | — | Needle roller bearings / Radial needle roller and cage assemblies / Metric series / K,K.ZW |
| Manufacturer Identity | ||
| Schaeffler Product Code | 379824 | — |
| Official Class Key | — | 090-010-010 |
| Base Type | K63X70X21 | — |
| Gpsd Group | I01 | — |
| Product Line Id | 09 | — |
| X Life Marking | n.r. | — |
| Product Identity | ||
| Construction | Needle roller cage assembly K, single row | — |
| Short Description | Needle roller cage assembly | — |
| Technical Data | ||
| Fw | — | 63 mm |
| Ew | — | 71 mm |
| Bc | — | 20 mm |
| Basic Load Ratings : Cr | — | 41.4 kN |
| Inner Diameter Of Needle Roller Complement (Fw) | 63 mm | — |
| Basic Load Ratings : C0R | — | 79.4 kN |
| Outside Diameter Of Needle Roller Complement (Ew) | 70 mm | — |
| Fatigue Load Limit : Cu | — | 12.7 kN |
| Width (Bc) | 21 mm | — |
| Cage Material P/S | — | S |
| Basic Dynamic Load Rating, Radial (Cr) | 45,500 N | — |
| Limiting Speeds(Grease Lub.) | — | 4400 min-1 |
| Basic Static Load Rating, Radial (C0R) | 101,000 N | — |
| Limiting Speeds(Oil Lub.) | — | 6700 min-1 |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Recommended Dimensions Shaft : S(Max.) | — | 63.000 mm |
| Operating Temperature Max. (Tmax) | 140 °C | — |
| Recommended Dimensions Shaft : S(Min.) | — | 62.987 mm |
| Limiting Speed (Limiting Spe) | 7,400 1/min | — |
| Recommended Dimensions Housing : H(Max.) | — | 71.029 mm |
| Reference Speed (Nϑr) | 4,150 1/min | — |
| Recommended Dimensions Housing : H(Min.) | — | 71.010 mm |
| Fatigue Load Limit, Radial (Cur) | 13,400 N | — |
| Mass(Refer.) | — | 0.070 kg |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.