Bearing 7012B KOYO - Boyal Industrial Pte ltd.

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Bearing 7012B KOYO image

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Bearing 7012B KOYO Details

Bearing number:727 CD/HCP4A
Size (mm):22x7x7
Bore Diameter (mm):22
Outer Diameter (mm):7
Width (mm):7
d:7 mm
D:22 mm
B:7 mm
d1:12.6 mm
d2:12.6 mm
D1:17.4 mm
r1,2 - min.:0.3 mm
r3,4 - min.:0.2 mm
a:5.5 mm
da - min.:9.4 mm
db - min.:9.4 mm
Da - max.:19.6 mm
Db - max.:20.2 mm
ra - max.:0.3 mm
rb - max.:0.2 mm
dn:13.6 mm
Basic dynamic load rating - C:3 kN
Basic static load rating - C0:1.2 kN
Fatigue load limit - Pu:0.049 kN
Limiting speed for grease lubrication:95000 r/min
Limiting speed for oil lubrication:150000 mm/min
Ball - Dw:3.969 mm
Ball - z:9
Gref:0.162 cm3
Calculation factor - f0:8.4
Preload class A - GA:12 N
Preload class B - GB:24 N
Preload class C - GC:48 N
Preload class D - GD:96 N
Calculation factor - f:1
Calculation factor - f2A:1
Calculation factor - f2B:1.01
Calculation factor - f2C:1.03
Calculation factor - f2D:1.06
Calculation factor - fHC:1.01
Preload class A:13 N/micron
Preload class B:17 N/micron
Preload class C:23 N/micron
Preload class D:33 N/micron
r1,2 min.:0.3 mm
r3,4 min.:0.2 mm
da min.:9.4 mm
db min.:9.4 mm
Da max.:19.6 mm
Db max.:20.2 mm
ra max.:0.3 mm
rb max.:0.2 mm
Basic dynamic load rating C:2.96 kN
Basic static load rating C0:1.16 kN
Fatigue load limit Pu:0.049 kN
Attainable speed for grease lubrication:95000 r/min
Attainable speed for oil-air lubrication:150000 r/min
Ball diameter Dw:3.969 mm
Number of balls z:9
Reference grease quantity Gref:0.162 cm³
Preload class A GA:12 N
Static axial stiffness, preload class A:13 N/µm
Preload class B GB:24 N
Static axial stiffness, preload class B:17 N/µm
Preload class C GC:48 N
Static axial stiffness, preload class C:23 N/µm
Preload class D GD:96 N
Static axial stiffness, preload class D:33 N/µm
Calculation factor f:1.02
Calculation factor f1:1
Calculation factor f2A:1
Calculation factor f2B:1.01
Calculation factor f2C:1.03
Calculation factor f2D:1.06
Calculation factor fHC:1.01
Calculation factor f0:8.4
Mass bearing:0.012 kg

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