NMB SBT30 plain bearings
NMB SBT30 plain bearings manufacturer and global supplier of reliable ball and roller … 55x90x18 Size (mm) NMB SBT30 plain bearings Industries Products Manufacturing & Engineering and Agricultural Bearings designed to meet the unique requirements of our targeted industries.
| Size (mm) | 55x90x18 |
| Bore Diameter (mm) | 55 |
| Outer Diameter (mm) | 90 |
| Width (mm) | 18 |
| d | 55 mm |
| D | 90 mm |
| B | 18 mm |
| d1 | 65.8 mm |
| d2 | 65.8 mm |
| D1 | 79.2 mm |
| K | 0.5 mm |
| C1 | 4.88 mm |
| r1,2 – min. | 1.1 mm |
| r3,4 – min. | 0.6 mm |
| a | 26 mm |
| da – min. | 61 mm |
| db – min. | 61 mm |
| Da – max. | 84 mm |
| Db – max. | 86.8 mm |
| ra – max. | 1 mm |
| rb – max. | 0.6 mm |
| dn | 68.1 mm |
| Basic dynamic load rating – C | 37.1 kN |
| Basic static load rating – C0 | 31 kN |
| Fatigue load limit – Pu | 1.3 kN |
| Limiting speed for grease lubrication | 14000 r/min |
| Limiting speed for oil lubrication | 22000 mm/min |
| Ball – Dw | 11.112 mm |
| Ball – z | 18 |
| Gref | 5.1 cm3 |
| Calculation factor – e | 0.68 |
| Calculation factor – Y2 | 1.41 |
| Calculation factor – Y0 | 0.76 |
| Calculation factor – X2 | 0.67 |
| Calculation factor – Y1 | 0.92 |
| Preload class A – GA | 230 N |
| Preload class B – GB | 460 N |
| Preload class C – GC | 920 N |
| Preload class D – GD | 1840 N |
| Calculation factor – f | 1.1 |
| Calculation factor – f1 | 0.99 |
| Calculation factor – f2A | 1 |
| Calculation factor – f2B | 1.02 |
| Calculation factor – f2C | 1.05 |
| Calculation factor – f2D | 1.08 |
| Calculation factor – fHC | 1 |
| Preload class A | 159 N/micron |
| Preload class B | 207 N/micron |
| Preload class C | 275 N/micron |
| Preload class D | 372 N/micron |
| r1,2 min. | 1.1 mm |
| r3,4 min. | 0.6 mm |
| da min. | 61 mm |
| db min. | 61 mm |
| Da max. | 84 mm |
| Db max. | 86.8 mm |
| ra max. | 1 mm |
| rb max. | 0.6 mm |
| Basic dynamic load rating C | 37.1 kN |
| Basic static load rating C0 | 31 kN |
| Fatigue load limit Pu | 1.32 kN |
| Attainable speed for grease lubrication | 14000 r/min |
| Attainable speed for oil-air lubrication | 22000 r/min |
| Ball diameter Dw | 11.112 mm |
| Number of balls z | 18 |
| Reference grease quantity Gref | 5.1 cm³ |
| Preload class A GA | 230 N |
| Static axial stiffness, preload class A | 159 N/µm |
| Preload class B GB | 460 N |
| Static axial stiffness, preload class B | 207 N/µm |
| Preload class C GC | 920 N |
| Static axial stiffness, preload class C | 275 N/µm |
| Preload class D GD | 1840 N |
| Static axial stiffness, preload class D | 372 N/µm |
| Calculation factor f | 1.1 |
| Calculation factor f1 | 0.99 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.02 |
| Calculation factor f2C | 1.05 |
| Calculation factor f2D | 1.08 |
| Calculation factor fHC | 1 |
| Calculation factor e | 0.68 |
| Calculation factor (single, tandem) Y2 | 0.87 |
| Calculation factor (single, tandem) Y0 | 0.38 |
| Calculation factor (single, tandem) X2 | 0.41 |
| Calculation factor (back-to-back, face-to-face) Y1 | 0.92 |
| Calculation factor (back-to-back, face-to-face) Y2 | 1.41 |
| Calculation factor (back-to-back, face-to-face) Y0 | 0.76 |
| Calculation factor (back-to-back, face-to-face) X2 | 0.67 |
| Mass bearing | 0.38 kg |
Detailed Parameters
parameter：
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