SKF · super precision bearings
SKF NN 3008 TN/SP
Super-precision cylindrical 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 | 40 mm |
|---|---|
| Outside diameter | 68 mm |
| Width | 21 mm |
| Basic dynamic load rating | 42.9 kN |
| Basic static load rating | 56 kN |
| Attainable speed for grease lubrication | 13000 r/min |
| Attainable speed for oil-air lubrication | 15000 r/min |
| Bearing part | Complete bearing |
| Number of rows | 2 |
| Bore type | Cylindrical |
| Cage | Non-metallic |
| Design | NN |
| Number of flanges, outer ring | 0 |
| Number of flanges, inner ring | 3 |
| Loose flange | None |
| Radial internal clearance | C1 |
| Tolerance class | Class SP (SP) |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Indicative carbon footprint for new product | 1.1 kg CO_2e |
| Product net weight | 0.286 kg |
| eClass code | 23-05-09-01 |
| UNSPSC code | 31171505 |
| Dimensions · Bore diameter · (d) | 40 mm |
| Dimensions · Outside diameter · (D) | 68 mm |
| Dimensions · Width · (B) | 21 mm |
| Dimensions · Shoulder diameter inner ring (NN design) · (d_1) | 50.6 mm |
| Dimensions · Raceway diameter outer ring (NN design) · (E) | 61 mm |
| Dimensions · Chamfer dimension outer ring · (r_1,2) · min. | 1 mm |
| Dimensions · Permissible axial displacement from the normal position of one bearing ring relative to the other (all) · (s) · max. | 1.5 mm |
| Abutment dimensions · Abutment diameter shaft · (d_a) · min. | 45 mm |
| Abutment dimensions · Abutment diameter housing · (D_a) · min. | 62 mm |
| Abutment dimensions · Abutment diameter housing · (D_a) · max. | 63 mm |
| Abutment dimensions · Fillet radius · (r_a) · max. | 1 mm |
| Abutment dimensions · Oil nozzle position (not for variants with TNHA cage) · (d_n) | 59.9 mm |
| Calculation data · Basic dynamic load rating · (C) | 42.9 kN |
| Calculation data · Basic static load rating · (C_0) | 56 kN |
| Calculation data · Fatigue load limit · (P_u) | 6.4 kN |
| Calculation data · Attainable speed for grease lubrication | 13000 r/min |
| Calculation data · Attainable speed for oil-air lubrication | 15000 r/min |
| Calculation data · Reference grease quantity · (G_ref) | 1.8 cm³ |
| Calculation data · Static radial stiffness (guideline value) | 890 N/µm |
Family specifications and selection conditions
| Product description | Super-precision double row cylindrical roller bearings in the NN 30 series provide a unique balance between load carrying capacity, rigidity and speed. Having three flanges on the inner ring and no flanges on the outer ring, the bearings can accommodate axial displacement in both directions. The separable design simplifies mounting and dismounting, particularly when load conditions require both rings to have an interference fit. |
|---|---|
| Manufacturer features | Very high radial load carrying capacity • High rigidity and high running accuracy • Minimize noise, vibration and heat generation • 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.