SKF 707 CD/HCP4AH Angular contact ball bearings, super-precision

SKF 707 CD/HCP4AH 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		7	mm
D		19	mm
B		6	mm
d1		10.8	mm
d2		10.8	mm
D1		15.2	mm
K		0.5	mm
C1		3.65	mm
r1,2	min.	0.3	mm
r3,4	min.	0.15	mm
a		4.8	mm

Abutment dimensions

da	min.	9	mm
db	min.	9	mm
Da	max.	17	mm
Db	max.	18.2	mm
ra	max.	0.3	mm
rb	max.	0.15	mm
dn		11.7	mm

Calculation data

Basic dynamic load rating	C		2.51	kN
Basic static load rating	C0		0.98	kN
Fatigue load limit	Pu		0.04	kN
Attainable speed for grease lubrication			120000	r/min
Attainable speed for oil-air lubrication			190000	r/min
Ball diameter	Dw		3.572	mm
Number of balls	z		8
Reference grease quantity	Gref		0.12	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	GA		8	N
Static axial stiffness, preload class A			10	N/µm
Preload class B	GB		15	N
Static axial stiffness, preload class B			13	N/µm
Preload class C	GC		30	N
Static axial stiffness, preload class C			17	N/µm
Preload class D	GD		60	N
Static axial stiffness, preload class D			24	N/µm
Calculation factors
Calculation factor	f		1.03
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		1.02
Calculation factor	f0		8.1

Mass

Mass bearing

0.007

kg

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