7219 ACD/HCP4A - High precision angular contact ball bearing - Precision ball bearing

Product model	7219 ACD/HCP4A
d	95 mm
D	170 mm
B	32 mm
Limiting speed	14000 r/min
d1	118.1mm
d2	118.1mm
D1	146.9mm
r1,2	min.2.1mm
r3,4	min.1.1mm
a	47.1mm
da	min.107mm
db	min.107mm
Da	max.158mm
Db	max.163mm
Fillet radius(ra)	max.2mm
Fillet radius(rb)	max.1mm
Fuel injector position(dn)	124.4mm
Pu	3.1kN
Oil and gas lubrication can reach the speed	8500r/min
Contact angle(α)	25°
Ball diameter(Dw)	23.812mm
The number of pages(z)	15
Reference grease quantity(Gref)	34.314cm³
Preload level A(GA)	850N
Static axial stiffness of preload level A	310N/µm
Preload class B(GB)	1700N
Static axial stiffness of preload class B	405N/µm
Preload level C(GC)	3400N
Static axial stiffness of preload level C	535N/µm
Preload level D(GD)	6800N
Static axial stiffness of preload level D	721N/µm
Correction factor depends on bearing series and size (f)	1.09
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	2.2kg

7219 ACD/HCP4A / High precision angular contact ball bearing / Precision ball bearing