Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71928 CD/P4A

S71928 CD/P4A

Dimensions

d		140	mm
D		190	mm
B		24	mm
d₁		155.4	mm
d₂		155.4	mm
D₂		178.25	mm
r_1,2	min.	1.5	mm
r_3,4	min.	0.6	mm
a		34.2	mm

Abutment dimensions

d_a	min.	147	mm
d_a	max.	154.8	mm
d_b	min.	147	mm
d_b	max.	154.8	mm
D_a	max.	183	mm
D_b	max.	186	mm
r_a	max.	1.5	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	95.6	kN
Basic static load rating	C₀	116	kN
Fatigue load limit	P_u	3.9	kN
Attainable speed for grease lubrication		6700	r/min
Ball diameter	D_w	15.875	mm
Number of balls	z	29
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	360	N
Static axial stiffness, preload class A		146	N/µm
Preload class B	G_B	720	N
Static axial stiffness, preload class B		201	N/µm
Preload class C	G_C	1440	N
Static axial stiffness, preload class C		286	N/µm
Preload class D	G_D	2880	N
Static axial stiffness, preload class D		420	N/µm
Calculation factors
Calculation factor	f	1.29
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	16.6

Mass

Mass bearing

1.69

Model Number: S71928 CD/P4A
Inner Diameter：140mm Outer Diameter：190mm Width：24mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Super-precision bearings Angular contact ball bearings Angular contact ball bearings, super-precision
Details： Angular contact ball bearings, super-precision
Update date：2026-04-16
Application:Industrial Electromechanical,Film machine,electrostatic protection,medical equipment,Digital Generator,Roller mill,Oral Equipment,orthodontic material,tooth filling,industrial equipment,wheel lathe
Similar models:71928 ACD/P4A 71928 ACD/HCP4AH1 71928 ACD/HCP4A 71928 ACD/HCP4AL 71928 CD/HCP4AH1 S71928 CD/HCP4A S71928 CD/P4A S71928 ACD/P4A 71928 CD/P4AL 71928 ACD/P4AH1
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