SKF · rolling bearings
SKF NU 256 MA
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 | 280 mm |
|---|---|
| Outside diameter | 500 mm |
| Width | 80 mm |
| Basic dynamic load rating | 1190 kN |
| Basic static load rating | 1800 kN |
| Reference speed | 1400 r/min |
| Limiting speed | 1900 r/min |
| Bearing part | Complete bearing |
| Axial displacement capability | In both directions |
| Number of rows | 1 |
| Locating feature, bearing outer ring | Without |
| Bore type | Cylindrical |
| Cage | Machined brass |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 0 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Candidate for remanufacturing | Yes |
| Indicative carbon footprint for new product | 266 kg CO_2e |
| Indicative carbon footprint for remanufactured product | 88.3 kg CO_2e |
| Product net weight | 71.8 kg |
| eClass code | 23-05-09-01 |
| UNSPSC code | 31171505 |
| Dimensions · Bore diameter · (d) | 280 mm |
| Dimensions · Outside diameter · (D) | 500 mm |
| Dimensions · Width · (B) | 80 mm |
| Dimensions · Shoulder diameter of outer ring · (D_1) · ≈ | 417 mm |
| Dimensions · Raceway diameter of inner ring · (F) | 340 mm |
| Dimensions · Chamfer dimension · (r_1,2) · min. | 5 mm |
| Dimensions · Permissible axial displacement · (s) · max. | 3.8 mm |
| Abutment dimensions · Diameter of spacer sleeve · (d_a) · min. | 300 mm |
| Abutment dimensions · Diameter of spacer sleeve · (d_a) · max. | 333 mm |
| Abutment dimensions · Diameter of shaft abutment · (d_b) · min. | 344 mm |
| Abutment dimensions · Diameter of housing abutment · (D_a) · max. | 480 mm |
| Abutment dimensions · Radius of fillet · (r_a) · max. | 4 mm |
| Calculation data · Basic dynamic load rating · (C) | 1190 kN |
| Calculation data · Basic static load rating · (C_0) | 1800 kN |
| Calculation data · Fatigue load limit · (P_u) | 156 kN |
| Calculation data · Reference speed | 1400 r/min |
| Calculation data · Limiting speed | 1900 r/min |
| Calculation data · Minimum load factor · (k_r) | 0.15 |
| Calculation data · Limiting value · (e) | 0.2 |
| Calculation data · Calculation factor · (Y) | 0.6 |
Family specifications and selection conditions
| Product description | Single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and no flanges on the inner ring, NU design bearings can accommodate axial displacement in both directions. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged. Also available on request with special sized bore and/or outside diameters, suitable for reworked shafts and housings. |
|---|---|
| Manufacturer features | High radial load carrying capacity • Low friction • Long service life • 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.