NBS NK 26/20 needle roller bearings
NBS NK 26/20 needle roller bearings Industries and Applications ? We sell discount online as well 55 Outer Diameter (mm) as cheap 80x55x13 Size (mm) machinery parts. 80 Bore Diameter (mm)
Size (mm) | 80x55x13 |
Bore Diameter (mm) | 80 |
Outer Diameter (mm) | 55 |
Width (mm) | 13 |
d | 55 mm |
D | 80 mm |
B | 13 mm |
d1 | 62.75 mm |
d2 | 60.7 mm |
D1 | 72.3 mm |
b | 2.2 mm |
C1 | 6.5 mm |
C2 | 2.5 mm |
C3 | 2 mm |
r1,2 – min. | 1 mm |
r3,4 – min. | 0.3 mm |
a | 16.2 mm |
da – min. | 59.6 mm |
db – min. | 57 mm |
Da – max. | 75.4 mm |
Db – max. | 78 mm |
ra – max. | 1 mm |
rb – max. | 0.3 mm |
dn | 64.6 mm |
Basic dynamic load rating – C | 15.3 kN |
Basic static load rating – C0 | 10.6 kN |
Fatigue load limit – Pu | 0.455 kN |
Limiting speed for grease lubrication | 28000 r/min |
Limiting speed for oil lubrication | 43000 mm/min |
Ball – Dw | 7.938 mm |
Ball – z | 21 |
Gref | 2.3 cm3 |
Calculation factor – f0 | 8.4 |
Preload class A – GA | 83 N |
Preload class B – GB | 250 N |
Preload class C – GC | 500 N |
Calculation factor – f | 1 |
Calculation factor – f2A | 1 |
Calculation factor – f2B | 1.05 |
Calculation factor – f2C | 1.09 |
Calculation factor – fHC | 1.01 |
Preload class A | 46 N/micron |
Preload class B | 74 N/micron |
Preload class C | 102 N/micron |
r1,2 min. | 1 mm |
r3,4 min. | 0.3 mm |
da min. | 59.6 mm |
db min. | 57 mm |
Da max. | 75.4 mm |
Db max. | 78 mm |
ra max. | 1 mm |
rb max. | 0.3 mm |
Basic dynamic load rating C | 15.3 kN |
Basic static load rating C0 | 10.6 kN |
Fatigue load limit Pu | 0.455 kN |
Attainable speed for grease lubrication | 28000 r/min |
Attainable speed for oil-air lubrication | 43000 r/min |
Ball diameter Dw | 7.938 mm |
Number of balls z | 21 |
Reference grease quantity Gref | 2.3 cm³ |
Preload class A GA | 83 N |
Static axial stiffness, preload class A | 46 N/µm |
Preload class B GB | 250 N |
Static axial stiffness, preload class B | 74 N/µm |
Preload class C GC | 500 N |
Static axial stiffness, preload class C | 102 N/µm |
Calculation factor f | 1.16 |
Calculation factor f1 | 1 |
Calculation factor f2A | 1 |
Calculation factor f2B | 1.05 |
Calculation factor f2C | 1.09 |
Calculation factor fHC | 1.01 |
Calculation factor f0 | 8.4 |
Mass bearing | 0.14 kg |
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