ISB 3205 ATN9 angular contact ball bearings
What are the dimensions of a ISB 3205 ATN9 angular contact ball bearings? 72 Bore Diameter (mm) Manufacturing Service . 55 Outer Diameter (mm) Get 72x55x9 Size (mm) Your Free, Instant Quote！
| Size (mm) | 72x55x9 |
| Bore Diameter (mm) | 72 |
| Outer Diameter (mm) | 55 |
| Width (mm) | 9 |
| d | 55 mm |
| D | 72 mm |
| B | 9 mm |
| d1 | 60.7 mm |
| d2 | 60.7 mm |
| D1 | 66.5 mm |
| r1,2 – min. | 0.3 mm |
| r3,4 – min. | 0.15 mm |
| a | 13 mm |
| da – min. | 57 mm |
| db – min. | 57 mm |
| Da – max. | 70 mm |
| Db – max. | 71.2 mm |
| ra – max. | 0.3 mm |
| rb – max. | 0.15 mm |
| dn | 61.3 mm |
| Basic dynamic load rating – C | 10.1 kN |
| Basic static load rating – C0 | 10.8 kN |
| Fatigue load limit – Pu | 0.455 kN |
| Limiting speed for grease lubrication | 18000 r/min |
| Limiting speed for oil lubrication | 28000 mm/min |
| Ball – Dw | 4.762 mm |
| Ball – z | 29 |
| Gref | 0.88 cm3 |
| Calculation factor – f0 | 17.1 |
| Preload class A – GA | 55 N |
| Preload class B – GB | 165 N |
| Preload class C – GC | 330 N |
| Calculation factor – f | 1 |
| Calculation factor – f2A | 1 |
| Calculation factor – f2B | 1.09 |
| Calculation factor – f2C | 1.16 |
| Calculation factor – fHC | 1 |
| Preload class A | 53 N/micron |
| Preload class B | 91 N/micron |
| Preload class C | 135 N/micron |
| r1,2 min. | 0.3 mm |
| r3,4 min. | 0.15 mm |
| da min. | 57 mm |
| db min. | 57 mm |
| Da max. | 70 mm |
| Db max. | 71.2 mm |
| ra max. | 0.3 mm |
| rb max. | 0.15 mm |
| Basic dynamic load rating C | 10.1 kN |
| Basic static load rating C0 | 10.8 kN |
| Fatigue load limit Pu | 0.455 kN |
| Attainable speed for grease lubrication | 18000 r/min |
| Attainable speed for oil-air lubrication | 28000 r/min |
| Ball diameter Dw | 4.762 mm |
| Number of balls z | 29 |
| Reference grease quantity Gref | 0.88 cm³ |
| Preload class A GA | 55 N |
| Static axial stiffness, preload class A | 53 N/µm |
| Preload class B GB | 165 N |
| Static axial stiffness, preload class B | 91 N/µm |
| Preload class C GC | 330 N |
| Static axial stiffness, preload class C | 135 N/µm |
| Calculation factor f | 1.27 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.09 |
| Calculation factor f2C | 1.16 |
| Calculation factor fHC | 1 |
| Calculation factor f0 | 17.1 |
| Mass bearing | 0.081 kg |
Detailed Parameters
parameter：
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