Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71911 ACE/HCP4A

S71911 ACE/HCP4A

Dimensions

d		55	mm
D		80	mm
B		13	mm
d₁		62.75	mm
d₂		60.7	mm
D₂		74.7	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		23.5	mm

Abutment dimensions

d_a	min.	59.6	mm
d_a	max.	62.2	mm
d_b	min.	57	mm
d_b	max.	60.1	mm
D_a	max.	75.4	mm
D_b	max.	78	mm
r_a	max.	1	mm
r_b	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	14.6	kN
Basic static load rating	C₀	10.2	kN
Fatigue load limit	P_u	0.43	kN
Attainable speed for grease lubrication		25000	r/min
Ball diameter	D_w	7.938	mm
Number of balls	z	21
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	133	N
Static axial stiffness, preload class A		116	N/µm
Preload class B	G_B	400	N
Static axial stiffness, preload class B		178	N/µm
Preload class C	G_C	800	N
Static axial stiffness, preload class C		233	N/µm
Calculation factors
Calculation factor	f	1.16
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
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

0.15

Model Number: S71911 ACE/HCP4A
Inner Diameter：55mm Outer Diameter：80mm Width：13mm
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:Spectral Products,lifting chain,Perfusion device,Beauty and Body,Chromatography Products,intermediate,Cleaning equipment,coal mill,Industrial equipment,Safety protection,sawing machine
Similar models:71911 ACE/HCP4AH1 71911 CB/HCP4AL 71911 CE/HCP4AL 71911 ACD/P4A 71911 ACD/HCP4AL S71911 CB/HCP4A 71911 CE/P4AL S71911 ACE/HCP4A 71911 ACE/P4AH1 71911 CE/P4AH1
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