SKF · rolling bearings
SKF NK 38/20
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 of needle roller complement | 38 mm |
|---|---|
| Outside diameter | 48 mm |
| Width | 20 mm |
| Basic dynamic load rating | 30 kN |
| Basic static load rating | 49 kN |
| Reference speed | 11000 r/min |
| Limiting speed | 12000 r/min |
| SKF performance class | SKF Explorer |
| Bearing part | Bearing without inner ring |
| Number of rows | 1 |
| Outer ring type | Machined (solid) |
| Aligning feature | Without |
| Cage | Sheet steel |
| Number of flanges, outer ring | 2 |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | With |
| Indicative carbon footprint for new product | 0.29 kg CO_2e |
| Product net weight | 0.079 kg |
| eClass code | 23-05-09-03 |
| UNSPSC code | 31171512 |
| Dimensions · Diameter under rollers · (F_w) | 38 mm |
| Dimensions · Outside diameter · (D) | 48 mm |
| Dimensions · Width · (C) | 20 mm |
| Dimensions · Chamfer dimension outer ring · (r_1,2) · min. | 0.3 mm |
| Abutment dimensions · Diameter of housing abutment · (D_a) · max. | 46 mm |
| Abutment dimensions · Fillet radius · (r_a) · max. | 0.3 mm |
| Calculation data · SKF performance class | SKF Explorer |
| Calculation data · Basic dynamic load rating · (C) | 30 kN |
| Calculation data · Basic static load rating · (C_0) | 49 kN |
| Calculation data · Fatigue load limit · (P_u) | 6.1 kN |
| Calculation data · Reference speed | 11000 r/min |
| Calculation data · Limiting speed | 12000 r/min |
| Associated seals · Radial shaft seal with a low cross-sectional height, single lip | G 38x48x4 |
| Associated seals · Radial shaft seal with a low cross-sectional height, double lip | SD 38x48x4 |
Family specifications and selection conditions
| Product description | Single row needle roller bearings without an inner ring consist of an outer ring with a needle roller and cage assembly. They are an excellent choice for compact bearing arrangements in applications where hardened and ground raceways can be provided on the shaft. The outer ring includes two integral flanges to guide the bearing axially and an annular groove with one or more lubrication holes to facilitate relubrication. |
|---|---|
| Manufacturer features | High radial load carrying capacity • High stiffness • Low cross-sectional height • Accommodate axial displacement in both directions |
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.