7218 CD/HCP4A
Precision ball bearing > High precision angular contact ball bearing
7218 CD/HCP4A - High precision angular contact ball bearing - Precision ball bearing
| Product model | 7218 CD/HCP4A |
|---|---|
| d | 90 mm |
| D | 160 mm |
| B | 30 mm |
| Limiting speed | 16000 r/min |
| d1 | 111.6mm |
| d2 | 111.6mm |
| D1 | 138.4mm |
| r1,2 | min.2mm |
| r3,4 | min.1mm |
| a | 31.9mm |
| da | min.101mm |
| db | min.101mm |
| Da | max.149mm |
| Db | max.154.4mm |
| Fillet radius(ra) | max.2mm |
| Fillet radius(rb) | max.1mm |
| Fuel injector position(dn) | 117.5mm |
| Pu | 3.1kN |
| Oil and gas lubrication can reach the speed | 10000r/min |
| Contact angle(α) | 15° |
| Ball diameter(Dw) | 22.225mm |
| The number of pages(z) | 16 |
| Reference grease quantity(Gref) | 27.765cm³ |
| Preload level A(GA) | 480N |
| Static axial stiffness of preload level A | 126N/µm |
| Preload class B(GB) | 960N |
| Static axial stiffness of preload class B | 171N/µm |
| Preload level C(GC) | 1920N |
| Static axial stiffness of preload level C | 239N/µm |
| Preload level D(GD) | 3840N |
| Static axial stiffness of preload level D | 349N/µm |
| Correction factor depends on bearing series and size (f) | 1.09 |
| The correction factor depends on the contact angle(f1) | 1 |
| Correction factor, preload class A(f2A) | 1 |
| Correction factor, preload class B(f2B) | 1.01 |
| Correction factor, preload class C(f2C) | 1.03 |
| Correction factor, preload class D(f2D) | 1.06 |
| Correction factor of hybrid ceramic bearing(fHC) | 1.01 |
| Calculation coefficient(f0) | 14.6 |
| Weight | 1.83kg |
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7218 CD/HCP4A / High precision angular contact ball bearing / Precision ball bearing