Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71920 ACE/P4A

S71920 ACE/P4A

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		112.4	mm
d₂		109	mm
D₂		130.9	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		39.2	mm

Abutment dimensions

d_a	min.	106	mm
d_a	max.	111.8	mm
d_b	min.	103.2	mm
d_b	max.	108.4	mm
D_a	max.	134	mm
D_b	max.	136.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	36.4	kN
Basic static load rating	C₀	30	kN
Fatigue load limit	P_u	1.14	kN
Attainable speed for grease lubrication		11500	r/min
Ball diameter	D_w	12.7	mm
Number of balls	z	24
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	332	N
Static axial stiffness, preload class A		187	N/µm
Preload class B	G_B	996	N
Static axial stiffness, preload class B		280	N/µm
Preload class C	G_C	1990	N
Static axial stiffness, preload class C		367	N/µm
Calculation factors
Calculation factor	f	1.18
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.07
Calculation factor	f_HC	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

0.78

Model Number: S71920 ACE/P4A
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：2026-04-16
Application:wall industry,vacuum suction cup,animal,chamfer,safety testing,Automobile,hinge industry,container finishing,impression material,insect experimental analysis instrument,plastic molding
Similar models:71920 CD/HCP4AL 71920 CD/P4AL 71920 CB/P4A 71920 CD/P4AH1 71920 CD/HCP4A 71920 ACB/P4AL 71920 CD/P4A 71920 CD/HCP4AH1 71920 ACE/P4AL 71920 ACD/P4AH1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
13710	34.925	57.96	6.35	Seals
21319 E	95	200	45	Bearings, units and housings
32315/DF	75	160	-	Bearings, units and housings
400145	12.5	-	-	Seals
42x55x7 HMS5 V	42	55	7	Seals
50x72x12 HMSA10 V	50	72	12	Seals
7012 ACE/P4AL	60	95	18	Bearings, units and housings
7228 ACD/HCP4A	140	250	42	Bearings, units and housings
GS 89320	100	170	14.5	Bearings, units and housings
HE 2318 E/L73	82.55	120	73	Bearings, units and housings
OKBS 97	97	-	-
SNW 13x2.3/16	55.5625	85.852	53.086	Bearings, units and housings

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