SKF 7009 CD/P4AH Angular contact ball bearings, super-precision

SKF 7009 CD/P4AH 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		45	mm
D		75	mm
B		16	mm
d1		54.2	mm
d2		54.2	mm
D1		65.8	mm
K		0.5	mm
C1		9.45	mm
r1,2	min.	1	mm
r3,4	min.	0.3	mm
a		16.1	mm

Abutment dimensions

da	min.	49.6	mm
db	min.	49.6	mm
Da	max.	70.4	mm
Db	max.	73	mm
ra	max.	1	mm
rb	max.	0.3	mm
dn		56.2	mm

Calculation data

Basic dynamic load rating	C		28.6	kN
Basic static load rating	C0		22.4	kN
Fatigue load limit	Pu		0.95	kN
Attainable speed for grease lubrication			19000	r/min
Attainable speed for oil-air lubrication			30000	r/min
Ball diameter	Dw		9.525	mm
Number of balls	z		17
Reference grease quantity	Gref		3.3	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	GA		110	N
Static axial stiffness, preload class A			56	N/µm
Preload class B	GB		220	N
Static axial stiffness, preload class B			76	N/µm
Preload class C	GC		440	N
Static axial stiffness, preload class C			107	N/µm
Preload class D	GD		880	N
Static axial stiffness, preload class D			155	N/µm
Calculation factors
Calculation factor	f		1.09
Calculation factor	f1		1
Calculation factor	f2A		1
Calculation factor	f2B		1.02
Calculation factor	f2C		1.05
Calculation factor	f2D		1.09
Calculation factor	fHC		1
Calculation factor	f0		15.1

Mass

Mass bearing

0.24

kg

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