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

S71918 CB/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		27.5	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	23.8	kN
Basic static load rating	C₀	28.5	kN
Fatigue load limit	P_u	0.72	kN
Attainable speed for grease lubrication		16000	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	59	N
Static axial stiffness, preload class A		59	N/µm
Preload class B	G_B	120	N
Static axial stiffness, preload class B		78	N/µm
Preload class C	G_C	355	N
Static axial stiffness, preload class C		124	N/µm
Calculation factors
Calculation factor	f	1.12
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.03
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
Calculation factor	f₀	10

Mass

Mass bearing

0.58

Model Number: S71918 CB/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:Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,chamfering machine etc,rock drilling machinery,machine tool spindle,gas turbine,industrial equipment,gantry processing,bathroom facilities,marine analysis,Cylinder Special,cooling system
Similar models:71918 CE/HCP4AH1 71918 CD/HCP4A 71918 CB/P4A S71918 CD/HCP4A 71918 ACD/HCP4AH1 71918 CD/HCP4AL 71918 ACE/HCP4AL 71918 CD/HCP4AH1 71918 ACD/HCP4AL 71918 ACB/HCP4A
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