7018 CD/P4AL
Precision ball bearing > High precision angular contact ball bearing
7018 CD/P4AL - High precision angular contact ball bearing - Precision ball bearing
| Product model | 7018 CD/P4AL |
|---|---|
| d | 90 mm |
| D | 140 mm |
| B | 24 mm |
| Limiting speed | 15000 r/min |
| d1 | 105.4mm |
| d2 | 105.4mm |
| D1 | 124.6mm |
| Width of lubricating groove (b) | 2.2mm |
| C1 | 13.4mm |
| Distance from the side of the outer ring to the O-ring(C2) | 5.2mm |
| Distance from the side of the outer ring to the O-ring(C3) | 4.3mm |
| r1,2 | min.1.5mm |
| r3,4 | min.1mm |
| a | 27.5mm |
| da | min.97mm |
| db | min.97mm |
| Da | max.133mm |
| Db | max.136mm |
| Fillet radius(ra) | max.1.5mm |
| Fillet radius(rb) | max.1mm |
| Fuel injector position(dn) | 108.7mm |
| Pu | 3kN |
| Oil and gas lubrication can reach the speed | 9000r/min |
| Contact angle(α) | 15° |
| Ball diameter(Dw) | 15.875mm |
| The number of pages(z) | 20 |
| Reference grease quantity(Gref) | 15cm³ |
| Preload level A(GA) | 300N |
| Static axial stiffness of preload level A | 103N/µm |
| Preload class B(GB) | 600N |
| Static axial stiffness of preload class B | 141N/µm |
| Preload level C(GC) | 1200N |
| Static axial stiffness of preload level C | 198N/µm |
| Preload level D(GD) | 2400N |
| Static axial stiffness of preload level D | 287N/µm |
| Correction factor depends on bearing series and size (f) | 1.14 |
| The correction factor depends on the contact angle(f1) | 1 |
| Correction factor, preload class A(f2A) | 1 |
| Correction factor, preload class B(f2B) | 1.02 |
| Correction factor, preload class C(f2C) | 1.05 |
| Correction factor, preload class D(f2D) | 1.09 |
| Correction factor of hybrid ceramic bearing(fHC) | 1 |
| Calculation coefficient(f0) | 15.6 |
| Weight | 1.16kg |
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7018 CD/P4AL / High precision angular contact ball bearing / Precision ball bearing