SKF · rolling bearings
SKF NAO 50X68X20
Needle roller bearings — manufacturer technical reference and quotation support in Saudi Arabia.
لطلب عرض سعر في السعودية، أرسل رقم القطعة أو المقاس والكمية والمدينة. يُرجى تأكيد التوافق والتوفر والسعر مع فريقنا.
| Bore diameter | 50 mm |
|---|---|
| Outside diameter | 68 mm |
| Width | 20 mm |
| Basic dynamic load rating | 27 kN |
| Basic static load rating | 67 kN |
| Reference speed | 7500 r/min |
| Limiting speed | 8500 r/min |
| Bearing part | Complete bearing |
| Number of rows | 1 |
| Outer ring type | Machined (solid) |
| Aligning feature | Without |
| Cage | Sheet metal |
| Number of flanges, outer ring | 0 |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | With |
| Indicative carbon footprint for new product | 0.85 kg CO_2e |
| Product net weight | 0.23 kg |
| eClass code | 23-05-09-03 |
| UNSPSC code | 31171512 |
| Dimensions · Bore diameter · (d) | 50 mm |
| Dimensions · Outside diameter · (D) | 68 mm |
| Dimensions · Width · (B) | 20 mm |
| Dimensions · Raceway diameter outer ring · (E) | 60 mm |
| Dimensions · Raceway diameter inner ring · (F) | 55 mm |
| Dimensions · Chamfer dimension outer ring · (r_1,2) · min. | 0.6 mm |
| Dimensions · Permissible axial displacement from the normal position of one bearing ring relative to the other · (s) · max. | 1 mm |
| Abutment dimensions · Smallest permissible abutment diameter shaft, bearings without flanges · (d_a) | 59.2 mm |
| Abutment dimensions · Smallest permissible abutment diameter shaft, bearings without flanges · (d_b) | 54.5 mm |
| Abutment dimensions · Diameter of housing abutment · (D_a) | 60.8 mm |
| Abutment dimensions · Smallest permissible abutment diameter housing, bearings without flanges · (D_b) | 55.8 mm |
| Abutment dimensions · Fillet radius · (r_a) · max. | 0.6 mm |
| Calculation data · Basic dynamic load rating · (C) | 27 kN |
| Calculation data · Basic static load rating · (C_0) | 67 kN |
| Calculation data · Fatigue load limit · (P_u) | 8.15 kN |
| Calculation data · Reference speed | 7500 r/min |
| Calculation data · Limiting speed | 8500 r/min |
Family specifications and selection conditions
| Product description | Single row needle roller bearings incorporate cylindrical rollers that are small in diameter relative to their length. Owing to their large number of rollers, the bearings have a high load carrying capacity. Bearings without flanges on the outer ring are separable, i.e. the outer ring and the needle roller and cage assembly can be mounted separately. The inner ring contains a lubrication hole to facilitate relubrication. |
|---|---|
| Manufacturer features | High radial load carrying capacity • High stiffness • Low cross-sectional height • Accommodate axial displacement in both directions • Separable design |
Manufacturer references
Follow the complete manufacturer documentation for application restrictions, materials, tolerances and installation requirements. Limits may not apply simultaneously. We do not publish inferred stock, pricing or ratings.