Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S7211 CD/HCP4A

S7211 CD/HCP4A

Dimensions

d		55	mm
D		100	mm
B		21	mm
d₁		68.9	mm
d₂		68.9	mm
D₂		89.1	mm
r_1,2	min.	1.5	mm
r_3,4	min.	0.6	mm
a		21	mm

Abutment dimensions

d_a	min.	64	mm
d_a	max.	68.1	mm
d_b	min.	64	mm
d_b	max.	68.1	mm
D_a	max.	91	mm
D_b	max.	95.8	mm
r_a	max.	1.5	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	55.3	kN
Basic static load rating	C₀	43	kN
Fatigue load limit	P_u	1.8	kN
Attainable speed for grease lubrication		17000	r/min
Ball diameter	D_w	14.288	mm
Number of balls	z	15
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	210	N
Static axial stiffness, preload class A		80	N/µm
Preload class B	G_B	420	N
Static axial stiffness, preload class B		108	N/µm
Preload class C	G_C	840	N
Static axial stiffness, preload class C		152	N/µm
Preload class D	G_D	1680	N
Static axial stiffness, preload class D		219	N/µm
Calculation factors
Calculation factor	f	1.08
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.01
Calculation factor	f_2C	1.03
Calculation factor	f_2D	1.06
Calculation factor	f_HC	1.01
Calculation factor	f₀	14.5

Mass

Mass bearing

0.52

Model Number: S7211 CD/HCP4A
Inner Diameter：55mm Outer Diameter：100mm Width：21mm
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:Rolling mill,Broadcasting System,Broadcasting System,Industry,Laser Cutting,Cylinder Special,hydraulic cylinder,hydraulic control element,security,other rubber,aerial work platform
Similar models:7211 CD/HCP4A S7211 CD/P4A 7211 BECBM 7211 ACD/P4A 7211 BEGAP 7211 BECBJ S7211 CD/HCP4A 7211 ACCBM 7211 CD/P4A 7211 ACD/HCP4A
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Hot number： 17379 315606 6017 7014 ACB/HCP4AL 85181 89460 M BT1B 328017/HA4 BK 3020 EE 655270/655345 HJ 216 EC NUH 2336 ECMH NUP 2326 ECML S7017 CE/P4A SAW 23530 x 5.1/8 SSAFS 22528 x 5