7203 ACD/HCP4A - High precision angular contact ball bearing - Precision ball bearing

Product model	7203 ACD/HCP4A
d	17 mm
D	40 mm
B	12 mm
Limiting speed	67000 r/min
d1	24.1mm
d2	24.1mm
D1	32.8mm
r1,2	min.0.6mm
r3,4	min.0.3mm
a	12.8mm
da	min.21.2mm
db	min.21.2mm
Da	max.35.8mm
Db	max.37.6mm
Fillet radius(ra)	max.0.6mm
Fillet radius(rb)	max.0.3mm
Fuel injector position(dn)	25.9mm
Pu	0.125kN
Oil and gas lubrication can reach the speed	45000r/min
Contact angle(α)	25°
Ball diameter(Dw)	7.144mm
The number of pages(z)	10
Reference grease quantity(Gref)	1.005cm³
Preload level A(GA)	60N
Static axial stiffness of preload level A	59N/µm
Preload class B(GB)	120N
Static axial stiffness of preload class B	76N/µm
Preload level C(GC)	240N
Static axial stiffness of preload level C	99N/µm
Preload level D(GD)	480N
Static axial stiffness of preload level D	131N/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)	1.01
Correction factor, preload class C(f2C)	1.03
Correction factor, preload class D(f2D)	1.06
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	0.054kg

7203 ACD/HCP4A / High precision angular contact ball bearing / Precision ball bearing