Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71918 ACE/HCP4A

S71918 ACE/HCP4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		101	mm
d₂		97.9	mm
D₂		117.3	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		35.9	mm

Abutment dimensions

d_a	min.	96	mm
d_a	max.	100.4	mm
d_b	min.	93.2	mm
d_b	max.	97.3	mm
D_a	max.	119	mm
D_b	max.	121.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	28.6	kN
Basic static load rating	C₀	23.2	kN
Fatigue load limit	P_u	0.915	kN
Attainable speed for grease lubrication		15500	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	24
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	260	N
Static axial stiffness, preload class A		182	N/µm
Preload class B	G_B	780	N
Static axial stiffness, preload class B		274	N/µm
Preload class C	G_C	1560	N
Static axial stiffness, preload class C		360	N/µm
Calculation factors
Calculation factor	f	1.19
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

0.46

Model Number: S71918 ACE/HCP4A
Inner Diameter：90mm Outer Diameter：125mm Width：18mm
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：2025-12-09
Application:Tool,electronic materials,medical treatment,chemical instruments,coal,rolling machine,Die,electrostatic protection,Spectrum Products,Other machinery,non-ferrous metal alloy
Similar models:S71918 CE/HCP4A 71918 ACD/P4AH1 71918 CE/HCP4AH1 71918 CE/P4AH1 S71918 CE/P4A 71918 CE/HCP4A 71918 ACD/P4A S71918 CD/P4A 71918 ACE/HCP4AH1 71918 ACE/P4AH1
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