Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S7211 CD/P4A

S7211 CD/P4A

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		14000	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		72	N/µm
Preload class B	G_B	420	N
Static axial stiffness, preload class B		98	N/µm
Preload class C	G_C	840	N
Static axial stiffness, preload class C		137	N/µm
Preload class D	G_D	1680	N
Static axial stiffness, preload class D		197	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	1.05
Calculation factor	f_HC	1
Calculation factor	f₀	14.5

Mass

Mass bearing

0.62

Model Number: S7211 CD/P4A
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:chuck industry,Gripper Swing,rehabilitation training equipment,metallurgical mold,forklift industry,surgical instruments,small diesel generators,thread processing machine,garbage disposal,forklift truck,injection molding machine
Similar models:7211 ACD/HCP4A 7211 ACD/P4A 7211 BECBY 7211 ACCBM 7211 BECBP 7211 BEP 7211 BEGAP 7211 BECBM S7211 CD/P4A S7211 ACD/P4A
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Hot number： 15866 19896 19940 315-2Z 405453 61811-2RZ 7011 CE/HCP4A GEZ 300 ES-2RS NNUP 4964 B/HB1W33 NUTR 2052 A OKC 960 PCM 252815 M SAF 22530 x 5.3/8 TLC XHCE 045/OK 110 YAR 204-2RFGR/HV