7008 ACB/HCP4AL - High precision angular contact ball bearing - Precision ball bearing

Product model	7008 ACB/HCP4AL
d	40 mm
D	68 mm
B	15 mm
Limiting speed	48000 r/min
d1	50.95mm
d2	49.87mm
D2	58.88mm
Width of lubricating groove (b)	1.5mm
C1	7.8mm
Distance from the side of the outer ring to the O-ring(C2)	3.6mm
Distance from the side of the outer ring to the O-ring(C3)	2.6mm
r1,2	min.1mm
r3,4	min.0.6mm
a	20.2mm
da	min.44.6mm
db	min.44.6mm
Da	max.63.4mm
Db	max.64.8mm
Fillet radius(ra)	max.1mm
Fillet radius(rb)	max.0.6mm
Pu	0.163kN
Oil and gas lubrication can reach the speed	32000r/min
Contact angle(α)	25°
Ball diameter(Dw)	4.762mm
The number of pages(z)	26
Reference grease quantity(Gref)	2.22cm³
Preload level A(GA)	41N
Static axial stiffness of preload level A	80N/µm
Preload class B(GB)	82N
Static axial stiffness of preload class B	102N/µm
Preload level C(GC)	245N
Static axial stiffness of preload level C	153N/µm
Correction factor depends on bearing series and size (f)	1.04
The correction factor depends on the contact angle(f1)	0.99
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 of hybrid ceramic bearing(fHC)	1.01
Limit value (e)	0.68
Axial load factor (single shaft, tandem shaft)(Y2)	0.87
Axial load factor (single shaft, tandem shaft)(Y0)	0.38
Axial load factor (single shaft, tandem shaft)(X2)	0.41
Axial load factor (back to back, face to face) (Y1)	0.92
Axial load factor (back to back, face to face) (Y2)	1.41
Axial load factor (back to back, face to face) (Y0)	0.76
Radial load factor (back to back, face to face) (X2)	0.67
Weight	0.2kg

7008 ACB/HCP4AL / High precision angular contact ball bearing / Precision ball bearing