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

S71918 ACB/HCP4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		103	mm
d₂		101.4	mm
D₂		115	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		39	mm

Abutment dimensions

d_a	min.	96	mm
d_a	max.	102.3	mm
d_b	min.	96	mm
d_b	max.	100.7	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	22.5	kN
Basic static load rating	C₀	26.5	kN
Fatigue load limit	P_u	0.68	kN
Attainable speed for grease lubrication		15000	r/min
Ball diameter	D_w	7.144	mm
Number of balls	z	36
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	100	N
Static axial stiffness, preload class A		156	N/µm
Preload class B	G_B	200	N
Static axial stiffness, preload class B		199	N/µm
Preload class C	G_C	600	N
Static axial stiffness, preload class C		302	N/µm
Calculation factors
Calculation factor	f	1.12
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
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

0.58

Model Number: S71918 ACB/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:wire industry,chamfer,Vertical machining,gear type,garbage disposal,medical equipment,instrumentation instrument,circulating pump,Insect Count,Chromatography Products,shaft milling machine
Similar models:71918 CE/HCP4AL 71918 ACE/P4AL 71918 ACE/P4AH1 71918 ACD/P4AL 71918 ACD/HCP4A S71918 CD/P4A 71918 ACB/HCP4A 71918 CD/P4AH1 S71918 CB/HCP4A 71918 CB/HCP4AL
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