SKF 7024 ACE/P4AL Angular contact ball bearings, super-precision

SKF 7024 ACE/P4AL 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		120	mm
D		180	mm
B		28	mm
d1		141.42	mm
d2		137.8	mm
D1		158.61	mm
b		2.8	mm
C1		15	mm
C2		5.4	mm
C3		5.4	mm
r1,2	min.	2	mm
r3,4	min.	1	mm
a		49.3	mm

Abutment dimensions

da	min.	128.8	mm
db	min.	128.8	mm
Da	max.	171.2	mm
Db	max.	174.4	mm
ra	max.	2	mm
rb	max.	1	mm
dn		144.9	mm

Calculation data

Basic dynamic load rating	C		54	kN
Basic static load rating	C0		52	kN
Fatigue load limit	Pu		1.8	kN
Attainable speed for grease lubrication			8300	r/min
Attainable speed for oil-air lubrication			13000	r/min
Ball diameter	Dw		14.288	mm
Number of balls	z		29
Reference grease quantity	Gref		28	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	GA		490	N
Static axial stiffness, preload class A			259	N/µm
Preload class B	GB		1480	N
Static axial stiffness, preload class B			391	N/µm
Preload class C	GC		2950	N
Static axial stiffness, preload class C			512	N/µm
Calculation factors
Calculation factor	f		1.12
Calculation factor	f1		0.99
Calculation factor	f2A		1
Calculation factor	f2B		1.03
Calculation factor	f2C		1.06
Calculation factor	fHC		1
Calculation factor	e		0.68
Calculation factor (single, tandem)	Y2		0.87
Calculation factor (single, tandem)	Y0		0.38
Calculation factor (single, tandem)	X2		0.41
Calculation factor (back-to-back, face-to-face)	Y1		0.92
Calculation factor (back-to-back, face-to-face)	Y2		1.41
Calculation factor (back-to-back, face-to-face)	Y0		0.76
Calculation factor (back-to-back, face-to-face)	X2		0.67

Mass

Mass bearing

2.17

kg

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