Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71918 CD/P4A

S71918 CD/P4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		100.8	mm
d₂		100.8	mm
D₂		117.1	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		23.5	mm

Abutment dimensions

d_a	min.	96	mm
d_a	max.	100.2	mm
d_b	min.	96	mm
d_b	max.	100.2	mm
D_a	max.	119	mm
D_b	max.	121	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	47.5	kN
Basic static load rating	C₀	51	kN
Fatigue load limit	P_u	2.08	kN
Attainable speed for grease lubrication		9500	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	26
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	180	N
Static axial stiffness, preload class A		94	N/µm
Preload class B	G_B	360	N
Static axial stiffness, preload class B		129	N/µm
Preload class C	G_C	720	N
Static axial stiffness, preload class C		183	N/µm
Preload class D	G_D	1440	N
Static axial stiffness, preload class D		268	N/µm
Calculation factors
Calculation factor	f	1.23
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	16.3

Mass

Mass bearing

0.57

Model Number: S71918 CD/P4A
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：2026-04-16
Application:Spectrum Products,industrial equipment,leather processing,chemical raw materials and reagents,industrial supplies,gas turbine,Control,Embroidery,Medium and large motor,directional control valve,joint protection
Similar models:S71918 CD/HCP4A 71918 ACD/HCP4AL 71918 ACB/P4AL 71918 ACB/P4A 71918 ACE/P4A S71918 CB/HCP4A 71918 CD/HCP4AL 71918 CD/P4AL 71918 CB/HCP4A 71918 CD/P4A
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