Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71920 ACD/HCP4A

S71920 ACD/HCP4A

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		112.3	mm
d₂		112.3	mm
D₂		130.7	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		38.1	mm

Abutment dimensions

d_a	min.	106	mm
d_a	max.	111.7	mm
d_b	min.	106	mm
d_b	max.	111.7	mm
D_a	max.	134	mm
D_b	max.	136	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	57.2	kN
Basic static load rating	C₀	63	kN
Fatigue load limit	P_u	2.4	kN
Attainable speed for grease lubrication		9000	r/min
Ball diameter	D_w	12.7	mm
Number of balls	z	26
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	360	N
Static axial stiffness, preload class A		283	N/µm
Preload class B	G_B	720	N
Static axial stiffness, preload class B		373	N/µm
Preload class C	G_C	1440	N
Static axial stiffness, preload class C		498	N/µm
Preload class D	G_D	2880	N
Static axial stiffness, preload class D		680	N/µm
Calculation factors
Calculation factor	f	1.23
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.17
Calculation factor	f_HC	1.04
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

0.68

Model Number: S71920 ACD/HCP4A
Inner Diameter：100mm Outer Diameter：140mm Width：20mm
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：2024-12-13
Application:power source,Broadcasting System,Warehouse Shelf Equipment,surgical instruments,Microwave Equipment,top industry,Vertical machining,other accessories,industry test,security equipment,quality inspection equipment
Similar models:71920 ACE/P4AL 71920 CB/P4A S71920 ACE/P4A 71920 ACD/HCP4AH1 S71920 ACE/HCP4A 71920 ACD/P4A S71920 CB/HCP4A 71920 ACB/P4A S71920 CB/P4A 71920 ACB/P4AL
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