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| Parameter | SKFK 50X55X20Single row needle roller and cage assembly | INAK50X55X1750 × 55 × 17 mm | KOYOK50X55X30Needle roller bearings |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | INA | KOYO |
| Designation | K 50X55X20 | K50X55X17 | K50X55X30 |
| Product family | Needle roller bearings | — | Radial needle roller and cage assemblies / Metric series / K,K.ZW |
| Detailed type | Single row needle roller and cage assembly | Needle roller cage assembly | Needle roller bearings |
| Bore diameterd | — | 50 mm | — |
| Outside diameterD | 55 mm | 55 mm | — |
| WidthB | 20 mm | 17 mm | — |
| Basic dynamic load ratingC | 25.5 kN | 26 kN | 38.2 kN |
| Basic static load ratingC0 | 60 kN | 57 kN | 92.4 kN |
| Fatigue load limitPu | 7.2 kN | 7.5 kN | 14.4 kN |
| Reference speednref | 8500 r/min | 5300 r/min | — |
| Limiting speednG | 9500 r/min | 9300 r/min | 5400 r/min |
| Mass≈m | 0.0434 kg | 0.031098 kg | 0.057 kg |
| Sealing | Without | — | — |
| Cage | Sheet steel | — | — |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | — | — |
| 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 |
| Dimensions | |||
| Bore diameter of needle roller complement | 50.0 mm | — | — |
| Outside diameter of needle roller complement | 55.0 mm | — | — |
| Engineering — Dimensions | |||
| Diameter under rollersF w | 50 mm | — | — |
| Outside diameter roller complementE w | 55 mm | — | — |
| Width needle roller and cage assemblyU | 20 mm | — | — |
| Logistics | |||
| Product net weight | 0.0434 kg | — | — |
| eClass code | 23-05-09-03 | — | — |
| UNSPSC code | 31171512 | — | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 379770 | — |
| Official Class Key | — | — | 090-010-010 |
| Base Type | — | K50X55X17 | — |
| Gpsd Group | — | I01 | — |
| Product Line Id | — | 09 | — |
| Product identity | |||
| Official product category | Needle roller bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/needle-roller-bearings/needle-roller-and-cage-assemblies | — | — |
| Structure group ID | BN1_001 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Product Identity | |||
| Construction | — | Needle roller cage assembly K, single row | — |
| Short Description | — | Needle roller cage assembly | — |
| Properties | |||
| Bearing part | Needle roller and cage assembly | — | — |
| Number of rows | 1 | — | — |
| Outer ring type | Not applicable | — | — |
| Aligning feature | Without | — | — |
| Tolerance class | Normal | — | — |
| Material, bearing | Bearing steel | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Indicative carbon footprint for new product | 0.16 kg CO 2 e | — | — |
| Technical Data | |||
| Fw | — | — | 50 mm |
| Ew | — | — | 55 mm |
| Bc | — | — | 30 mm |
| Inner Diameter Of Needle Roller Complement (Fw) | — | 50 mm | — |
| Basic Load Ratings : Cr | — | — | 38.2 kN |
| Outside Diameter Of Needle Roller Complement (Ew) | — | 55 mm | — |
| Basic Load Ratings : C0R | — | — | 92.4 kN |
| Width (Bc) | — | 17 mm | — |
| Fatigue Load Limit : Cu | — | — | 14.4 kN |
| Basic Dynamic Load Rating, Radial (Cr) | — | 26,000 N | — |
| Cage Material P/S | — | — | S |
| Basic Static Load Rating, Radial (C0R) | — | 57,000 N | — |
| Limiting Speeds(Grease Lub.) | — | — | 5400 min-1 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speeds(Oil Lub.) | — | — | 8400 min-1 |
| Operating Temperature Max. (Tmax) | — | 140 °C | — |
| Recommended Dimensions Shaft : S(Max.) | — | — | 50.000 mm |
| Limiting Speed (Limiting Spe) | — | 9,300 1/min | — |
| Recommended Dimensions Shaft : S(Min.) | — | — | 49.989 mm |
| Reference Speed (Nϑr) | — | 5,300 1/min | — |
| Recommended Dimensions Housing : H(Max.) | — | — | 55.029 mm |
| Fatigue Load Limit, Radial (Cur) | — | 7,500 N | — |
| Recommended Dimensions Housing : H(Min.) | — | — | 55.010 mm |
| Mass(Refer.) | — | — | 0.057 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.