71905 ACE/P4AH - High precision angular contact ball bearing - Precision ball bearing

Product model	71905 ACE/P4AH
d	25 mm
D	42 mm
B	9 mm
Limiting speed	68000 r/min
d1	30.7mm
d2	29.4mm
D1	36.39mm
Lubrication hole diameter (K)	0.5mm
C1	5.45mm
r1,2	min.0.3mm
r3,4	min.0.15mm
a	12.3mm
da	min.27mm
db	min.27mm
Da	max.40mm
Db	max.41.2mm
Fillet radius(ra)	max.0.3mm
Fillet radius(rb)	max.0.15mm
Fuel injector position(dn)	31.8mm
Pu	0.112kN
Oil and gas lubrication can reach the speed	44000r/min
Contact angle(α)	25°
Ball diameter(Dw)	4.762mm
The number of pages(z)	16
Reference grease quantity(Gref)	0.6cm³
Preload level A(GA)	45N
Static axial stiffness of preload level A	51N/µm
Preload class B(GB)	140N
Static axial stiffness of preload class B	77N/µm
Preload level C(GC)	270N
Static axial stiffness of preload level C	100N/µm
Correction factor depends on bearing series and size (f)	1.06
The correction factor depends on the contact angle(f1)	0.99
Correction factor, preload class A(f2A)	1
Correction factor, preload class B(f2B)	1.04
Correction factor, preload class C(f2C)	1.07
Correction factor of hybrid ceramic bearing(fHC)	1
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	0.04kg

71905 ACE/P4AH / High precision angular contact ball bearing / Precision ball bearing