SKF 71919 CD/P4AH1 Angular contact ball bearings, super-precision

SKF 71919 CD/P4AH1 Angular contact ball bearings, super-precision
Angular contact ball bearings, super-precision

Tolerances: P4A, P4, PA9A, P2, Chamfer dimensionsRecommended shaft and housing fits: shafts, housingsValues for ISO tolerance classes: shafts, housingsSpeed dependent initial grease fill →Initial grease fillClamping and fitting forces: D design, E design, B design

Designation suffixes H, H1, L and L1identify variants for direct oil-air lubrication(→Variants).

d		95	mm
D		130	mm
B		18	mm
d1		105.8	mm
d2		105.8	mm
D1		119.2	mm
K		0.5	mm
C1		5.2	mm
r1,2	min.	1.1	mm
r3,4	min.	0.6	mm
a		24.1	mm

Abutment dimensions

da	min.	101	mm
db	min.	101	mm
Da	max.	124	mm
Db	max.	126	mm
ra	max.	1	mm
rb	max.	0.6	mm
dn		108.6	mm

Calculation data

Basic dynamic load rating	C		49.4	kN
Basic static load rating	C0		55	kN
Fatigue load limit	Pu		2.2	kN
Attainable speed for grease lubrication			9000	r/min
Attainable speed for oil-air lubrication			15000	r/min
Ball diameter	Dw		11.112	mm
Number of balls	z		28
Reference grease quantity	Gref		7.8	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	GA		190	N
Static axial stiffness, preload class A			101	N/µm
Preload class B	GB		380	N
Static axial stiffness, preload class B			139	N/µm
Preload class C	GC		760	N
Static axial stiffness, preload class C			198	N/µm
Preload class D	GD		1520	N
Static axial stiffness, preload class D			291	N/µm
Calculation factors
Calculation factor	f		1.26
Calculation factor	f1		1
Calculation factor	f2A		1
Calculation factor	f2B		1.04
Calculation factor	f2C		1.09
Calculation factor	f2D		1.15
Calculation factor	fHC		1
Calculation factor	f0		16.4

Mass

Mass bearing

0.58

kg

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