SKF 71819 CD/P4 Angular contact ball bearings, super-precision

SKF 71819 CD/P4 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		120	mm
B		13	mm
d1		103.2	mm
d2		103.2	mm
D1		112.1	mm
r1,2	min.	1	mm
r3,4	min.	0.3	mm
a		20.9	mm

Abutment dimensions

da	min.	99.6	mm
db	min.	99.6	mm
Da	max.	115.4	mm
Db	max.	118	mm
ra	max.	1	mm
rb	max.	0.3	mm
dn		104.1	mm

Calculation data

Basic dynamic load rating	C		22.1	kN
Basic static load rating	C0		27.5	kN
Fatigue load limit	Pu		1.12	kN
Attainable speed for grease lubrication			10000	r/min
Attainable speed for oil-air lubrication			16000	r/min
Ball diameter	Dw		7.144	mm
Number of balls	z		32
Reference grease quantity	Gref		3.1	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	GA		117	N
Static axial stiffness, preload class A			85	N/µm
Preload class B	GB		355	N
Static axial stiffness, preload class B			147	N/µm
Preload class C	GC		710	N
Static axial stiffness, preload class C			218	N/µm
Calculation factors
Calculation factor	f		1.36
Calculation factor	f1		1
Calculation factor	f2A		1
Calculation factor	f2B		1.09
Calculation factor	f2C		1.16
Calculation factor	fHC		1
Calculation factor	f0		17.3

Mass

Mass bearing

0.29

kg

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