709 ACD/HCP4AH - High precision angular contact ball bearing - Precision ball bearing

Product model	709 ACD/HCP4AH
d	9 mm
D	24 mm
B	7 mm
Limiting speed	130000 r/min
d1	14.1mm
d2	14.1mm
D1	18.9mm
Lubrication hole diameter (K)	0.5mm
C1	4.25mm
r1,2	min.0.3mm
r3,4	min.0.2mm
a	7.4mm
da	min.11mm
db	min.11mm
Da	max.22mm
Db	max.22.6mm
Fillet radius(ra)	max.0.3mm
Fillet radius(rb)	max.0.2mm
Fuel injector position(dn)	15.1mm
Pu	0.048kN
Oil and gas lubrication can reach the speed	85000r/min
Contact angle(α)	25°
Ball diameter(Dw)	3.969mm
The number of pages(z)	10
Reference grease quantity(Gref)	0.18cm³
Preload level A(GA)	20N
Static axial stiffness of preload level A	34N/µm
Preload class B(GB)	40N
Static axial stiffness of preload class B	44N/µm
Preload level C(GC)	80N
Static axial stiffness of preload level C	57N/µm
Preload level D(GD)	160N
Static axial stiffness of preload level D	74N/µm
Correction factor depends on bearing series and size (f)	1.03
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, preload class D(f2D)	1.08
Correction factor of hybrid ceramic bearing(fHC)	1.02
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	0.013kg

709 ACD/HCP4AH / High precision angular contact ball bearing / Precision ball bearing