SKF 71932 ACD/P4AL Angular contact ball bearings, super-precision

SKF 71932 ACD/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		160	mm
D		220	mm
B		28	mm
d1		178.5	mm
d2		178.5	mm
D1		201.5	mm
b		2.6	mm
C1		15.6	mm
C2		6.6	mm
C3		5.6	mm
r1,2	min.	2	mm
r3,4	min.	1	mm
a		58.5	mm

Abutment dimensions

da	min.	169	mm
db	min.	169	mm
Da	max.	211	mm
Db	max.	215	mm
ra	max.	2	mm
rb	max.	1	mm
dn		183.5	mm

Calculation data

Basic dynamic load rating	C		124	kN
Basic static load rating	C0		153	kN
Fatigue load limit	Pu		4.75	kN
Attainable speed for grease lubrication			5300	r/min
Attainable speed for oil-air lubrication			8000	r/min
Ball diameter	Dw		19.05	mm
Number of balls	z		28
Reference grease quantity	Gref		33	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	GA		800	N
Static axial stiffness, preload class A			402	N/µm
Preload class B	GB		1600	N
Static axial stiffness, preload class B			530	N/µm
Preload class C	GC		3200	N
Static axial stiffness, preload class C			710	N/µm
Preload class D	GD		6400	N
Static axial stiffness, preload class D			970	N/µm
Calculation factors
Calculation factor	f		1.27
Calculation factor	f1		0.98
Calculation factor	f2A		1
Calculation factor	f2B		1.04
Calculation factor	f2C		1.08
Calculation factor	f2D		1.14
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

2.7

kg

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