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| Parameter | SKFNKIS 5050 × 80 × 28 mm | INANKIS50-XL50 × 80 × 28 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | INA |
| Designation | NKIS 50 | NKIS50-XL |
| Product family | Needle roller bearings | — |
| Detailed type | Single row needle roller bearing with machined rings, with flanges | Radial roller bearing |
| Series | — | NKIS50 |
| Bore diameterd | 50 mm | 50 mm |
| Outside diameterD | 80 mm | 80 mm |
| WidthB | 28 mm | 28 mm |
| Basic dynamic load ratingC | 72 kN | 71 kN |
| Basic static load ratingC0 | 104 kN | 98 kN |
| Fatigue load limitPu | 13.2 kN | 17.6 kN |
| Reference speednref | 6300 r/min | 4250 r/min |
| Limiting speednG | 7500 r/min | 7400 r/min |
| Mass≈m | 0.518 kg | 0.526 kg |
| Internal clearance | CN | — |
| Sealing | Without | — |
| Cage | Sheet metal | — |
| Bearing material | Bearing steel | — |
| Lubricant | None | — |
| Minimum operating temperatureTmin | — | -30 °C |
| Maximum operating temperatureTmax | — | 120 °C |
| Engineering — Abutment dimensions | ||
| Smallest permissible abutment diameter shaft, bearings with flangesd a | min. 56.5 mm | — |
| Diameter of housing abutmentD a | max. 73.5 mm | — |
| Fillet radiusr a | max. 1 mm | — |
| Engineering — Calculation data | ||
| SKF performance class | SKF Explorer | — |
| Engineering — Dimensions | ||
| Raceway diameter inner ringF | 60 mm | — |
| Chamfer dimension outer ringr 1,2 | min. 1.1 mm | — |
| Permissible axial displacement from the normal position of one bearing ring relative to the others | max. 2 mm | — |
| Logistics | ||
| Product net weight | 0.518 kg | — |
| eClass code | 23-05-09-03 | — |
| UNSPSC code | 31171512 | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | — | 393362 |
| Base Type | — | NKIS50 |
| Old Designation | — | ["NKIS50"] |
| Gpsd Group | — | I01 |
| Product Line Id | — | 09 |
| X Life Marking | — | XL |
| Product identity | ||
| Official product category | Needle roller bearings | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/needle-roller-bearings/needle-roller-bearings-with-machined-rings | — |
| Structure group ID | BN1_003 | — |
| Available from SKF | Yes | — |
| Remanufacturable | No | — |
| Product Identity | ||
| Construction | — | Needle roller bearings NKIS, heavy series |
| Short Description | — | Radial roller bearing |
| Properties | ||
| Bearing part | Complete bearing | — |
| Number of rows | 1 | — |
| Outer ring type | Machined (solid) | — |
| Aligning feature | Without | — |
| Number of flanges, outer ring | 2 | — |
| Radial internal clearance | CN | — |
| Tolerance class | Normal | — |
| Material, bearing | Bearing steel | — |
| Coating | Without | — |
| Relubrication feature | With | — |
| Indicative carbon footprint for new product | 1.9 kg CO 2 e | — |
| Technical Data | ||
| Outside Diamater (D) | — | 80 mm |
| Total Width (B) | — | 28 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 71,000 N |
| Basic Static Load Rating, Radial (C0R) | — | 98,000 N |
| Raceway Diameter Inner Ring (F) | — | 60 mm |
| Operating Temperature Min. (Tmin) | — | -30 °C |
| Limiting Speed For Grease Lubrication (Ng Grea) | — | 4,400 1/min |
| Operating Temperature Max. (Tmax) | — | 120 °C |
| Limiting Speed (Limiting Spe) | — | 7,400 1/min |
| Reference Speed (Nϑr) | — | 4,250 1/min |
| Axial Displacement (S) | — | 2 mm |
| Bore Diameter (D) | — | 50 mm |
| Minimum Chamfer Dimension (Rmin) | — | 1.1 mm |
| Fatigue Load Limit, Radial (Cur) | — | 17,600 N |
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.