NTN NU2224E cylindrical roller bearings
What are the 68 Bore Diameter (mm) types 68x45x12 Size (mm) of NTN NU2224E cylindrical roller bearings ? Manufacturing Service . Get Your Free, Instant 45 Outer Diameter (mm) price, design review.
| Size (mm) | 68x45x12 |
| Bore Diameter (mm) | 68 |
| Outer Diameter (mm) | 45 |
| Width (mm) | 12 |
| d | 45 mm |
| D | 68 mm |
| B | 12 mm |
| d1 | 53.45 mm |
| d2 | 52.4 mm |
| D2 | 61.8 mm |
| r1,2 – min. | 0.6 mm |
| r3,4 – min. | 0.3 mm |
| a | 22.1 mm |
| da – min. | 48.2 mm |
| da – max. | 52.9 mm |
| db – min. | 48.2 mm |
| db – max. | 51.8 mm |
| Da – max. | 64.8 mm |
| Db – max. | 66 mm |
| ra – max. | 0.6 mm |
| rb – max. | 0.3 mm |
| Basic dynamic load rating – C | 7 kN |
| Basic static load rating – C0 | 5.4 kN |
| Fatigue load limit – Pu | 0.232 kN |
| Limiting speed for grease lubrication | 24000 r/min |
| Ball – Dw | 4.762 mm |
| Ball – z | 27 |
| 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 | 41 N |
| Preload class B – GB | 82 N |
| Preload class C – GC | 245 N |
| Calculation factor – f | 1.08 |
| Calculation factor – f1 | 0.99 |
| Calculation factor – f2A | 1 |
| Calculation factor – f2B | 1.02 |
| Calculation factor – f2C | 1.07 |
| Calculation factor – fHC | 1 |
| Preload class A | 74 N/micron |
| Preload class B | 95 N/micron |
| Preload class C | 143 N/micron |
| r1,2 min. | 0.6 mm |
| r3,4 min. | 0.3 mm |
| da min. | 48.2 mm |
| da max. | 52.9 mm |
| db min. | 48.2 mm |
| db max. | 51.8 mm |
| Da max. | 64.8 mm |
| Db max. | 66 mm |
| ra max. | 0.6 mm |
| rb max. | 0.3 mm |
| Basic dynamic load rating C | 9.56 kN |
| Basic static load rating C0 | 9 kN |
| Fatigue load limit Pu | 0.232 kN |
| Attainable speed for grease lubrication | 24000 r/min |
| Ball diameter Dw | 4.762 mm |
| Number of balls z | 27 |
| Preload class A GA | 41 N |
| Static axial stiffness, preload class A | 74 N/µm |
| Preload class B GB | 82 N |
| Static axial stiffness, preload class B | 95 N/µm |
| Preload class C GC | 245 N |
| Static axial stiffness, preload class C | 143 N/µm |
| Calculation factor f | 1.08 |
| Calculation factor f1 | 0.99 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.02 |
| Calculation factor f2C | 1.07 |
| 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 | 0.14 kg |
Detailed Parameters
parameter：
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