SKF · rolling bearings
SKF NU 321 ECJ
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 | 105 mm |
|---|---|
| Outside diameter | 225 mm |
| Width | 49 mm |
| Basic dynamic load rating | 500 kN |
| Basic static load rating | 500 kN |
| Reference speed | 3200 r/min |
| Limiting speed | 3800 r/min |
| SKF performance class | SKF Explorer |
| Bearing part | Complete bearing |
| Axial displacement capability | In both directions |
| Number of rows | 1 |
| Locating feature, bearing outer ring | Without |
| Bore type | Cylindrical |
| Cage | Sheet metal |
| 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 |
| Indicative carbon footprint for new product | 31.7 kg CO_2e |
| Product net weight | 8.56 kg |
| eClass code | 23-05-09-01 |
| UNSPSC code | 31171505 |
| Dimensions · Bore diameter · (d) | 105 mm |
| Dimensions · Outside diameter · (D) | 225 mm |
| Dimensions · Width · (B) | 49 mm |
| Dimensions · Shoulder diameter of outer ring · (D_1) · ≈ | 189 mm |
| Dimensions · Raceway diameter of inner ring · (F) | 133 mm |
| Dimensions · Chamfer dimension · (r_1,2) · min. | 3 mm |
| Dimensions · Chamfer dimension · (r_3,4) · min. | 3 mm |
| Dimensions · Permissible axial displacement · (s) · max. | 3.4 mm |
| Abutment dimensions · Diameter of spacer sleeve · (d_a) · min. | 119 mm |
| Abutment dimensions · Diameter of spacer sleeve · (d_a) · max. | 129 mm |
| Abutment dimensions · Diameter of shaft abutment · (d_b) · min. | 136 mm |
| Abutment dimensions · Diameter of housing abutment · (D_a) · max. | 209.4 mm |
| Abutment dimensions · Radius of fillet · (r_a) · max. | 2.5 mm |
| Abutment dimensions · Radius of fillet · (r_b) · max. | 2.5 mm |
| Calculation data · SKF performance class | SKF Explorer |
| Calculation data · Basic dynamic load rating · (C) | 500 kN |
| Calculation data · Basic static load rating · (C_0) | 500 kN |
| Calculation data · Fatigue load limit · (P_u) | 57 kN |
| Calculation data · Reference speed | 3200 r/min |
| Calculation data · Limiting speed | 3800 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.