71921 CD/HCP4AL
Precision ball bearing > High precision angular contact ball bearing
71921 CD/HCP4AL - High precision angular contact ball bearing - Precision ball bearing
| Product model | 71921 CD/HCP4AL |
|---|---|
| d | 105 mm |
| D | 145 mm |
| B | 20 mm |
| Limiting speed | 16000 r/min |
| d1 | 117.3mm |
| d2 | 117.3mm |
| D1 | 132.7mm |
| Width of lubricating groove (b) | 2.3mm |
| C1 | 10.9mm |
| Distance from the side of the outer ring to the O-ring(C2) | 3.9mm |
| Distance from the side of the outer ring to the O-ring(C3) | 3.2mm |
| r1,2 | min.1.1mm |
| r3,4 | min.0.6mm |
| a | 26.8mm |
| da | min.111mm |
| db | min.111mm |
| Da | max.139mm |
| Db | max.141mm |
| Fillet radius(ra) | max.1mm |
| Fillet radius(rb) | max.0.6mm |
| Fuel injector position(dn) | 120.6mm |
| Pu | 1.9kN |
| Oil and gas lubrication can reach the speed | 10000r/min |
| Contact angle(α) | 15° |
| Ball diameter(Dw) | 12.7mm |
| The number of pages(z) | 27 |
| Reference grease quantity(Gref) | 11.1cm³ |
| Preload level A(GA) | 230N |
| Static axial stiffness of preload level A | 122N/µm |
| Preload class B(GB) | 460N |
| Static axial stiffness of preload class B | 168N/µm |
| Preload level C(GC) | 920N |
| Static axial stiffness of preload level C | 239N/µm |
| Preload level D(GD) | 1840N |
| Static axial stiffness of preload level D | 350N/µm |
| Correction factor depends on bearing series and size (f) | 1.25 |
| The correction factor depends on the contact angle(f1) | 1 |
| Correction factor, preload class A(f2A) | 1 |
| Correction factor, preload class B(f2B) | 1.07 |
| Correction factor, preload class C(f2C) | 1.12 |
| Correction factor, preload class D(f2D) | 1.18 |
| Correction factor of hybrid ceramic bearing(fHC) | 1.04 |
| Calculation coefficient(f0) | 16.4 |
| Weight | 0.7kg |
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71921 CD/HCP4AL / High precision angular contact ball bearing / Precision ball bearing