Bearing number | 7001 CE/P4A |
Size (mm) | 28x12x8 |
Bore Diameter (mm) | 28 |
Outer Diameter (mm) | 12 |
Width (mm) | 8 |
d | 12 mm |
D | 28 mm |
B | 8 mm |
d1 | 17.5 mm |
d2 | 16.5 mm |
D1 | 22.45 mm |
r1,2 - min. | 0.3 mm |
r3,4 - min. | 0.15 mm |
a | 6.7 mm |
da - min. | 14 mm |
db - min. | 14 mm |
Da - max. | 26 mm |
Db - max. | 26.6 mm |
ra - max. | 0.3 mm |
rb - max. | 0.15 mm |
dn | 18.5 mm |
Basic dynamic load rating - C | 3.2 kN |
Basic static load rating - C0 | 1.3 kN |
Fatigue load limit - Pu | 0.057 kN |
Limiting speed for grease lubrication | 80000 r/min |
Limiting speed for oil lubrication | 127000 mm/min |
Ball - Dw | 3.969 mm |
Ball - z | 12 |
Gref | 0.31 cm3 |
Calculation factor - f0 | 7.3 |
Preload class A - GA | 17 N |
Preload class B - GB | 53 N |
Preload class C - GC | 110 N |
Calculation factor - f | 1 |
Calculation factor - f2A | 1 |
Calculation factor - f2B | 1.03 |
Calculation factor - f2C | 1.05 |
Calculation factor - fHC | 1 |
Preload class A | 13 N/micron |
Preload class B | 21 N/micron |
Preload class C | 30 N/micron |
r1,2 min. | 0.3 mm |
r3,4 min. | 0.15 mm |
da min. | 14 mm |
db min. | 14 mm |
Da max. | 26 mm |
Db max. | 26.6 mm |
ra max. | 0.3 mm |
rb max. | 0.15 mm |
Basic dynamic load rating C | 3.19 kN |
Basic static load rating C0 | 1.34 kN |
Fatigue load limit Pu | 0.057 kN |
Attainable speed for grease lubrication | 80000 r/min |
Attainable speed for oil-air lubrication | 127000 r/min |
Ball diameter Dw | 3.969 mm |
Number of balls z | 12 |
Reference grease quantity Gref | 0.31 cm³ |
Preload class A GA | 17 N |
Static axial stiffness, preload class A | 13 N/µm |
Preload class B GB | 53 N |
Static axial stiffness, preload class B | 21 N/µm |
Preload class C GC | 110 N |
Static axial stiffness, preload class C | 30 N/µm |
Calculation factor f | 1.02 |
Calculation factor f1 | 1 |
Calculation factor f2A | 1 |
Calculation factor f2B | 1.03 |
Calculation factor f2C | 1.05 |
Calculation factor fHC | 1 |
Calculation factor f0 | 7.3 |
Mass bearing | 0.021 kg |