Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7211 ACD/HCP4A

7211 ACD/HCP4A

Dimensions

d		55	mm
D		100	mm
B		21	mm
d₁		68.9	mm
d₂		68.9	mm
D₁		86.1	mm
r_1,2	min.	1.5	mm
r_3,4	min.	0.6	mm
a		28.7	mm

Abutment dimensions

d_a	min.	64	mm
d_b	min.	64	mm
D_a	max.	91	mm
D_b	max.	95.8	mm
r_a	max.	1.5	mm
r_b	max.	0.6	mm
d_n		72.6	mm

Calculation data

Basic dynamic load rating	C	52.7	kN
Basic static load rating	C₀	40.5	kN
Fatigue load limit	P_u	1.73	kN
Attainable speed for grease lubrication		15000	r/min
Attainable speed for oil-air lubrication		24000	r/min
Ball diameter	D_w	14.288	mm
Number of balls	z	15
Reference grease quantity	G_ref	8.595	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	330	N
Static axial stiffness, preload class A		191	N/µm
Preload class B	G_B	660	N
Static axial stiffness, preload class B		248	N/µm
Preload class C	G_C	1320	N
Static axial stiffness, preload class C		329	N/µm
Preload class D	G_D	2640	N
Static axial stiffness, preload class D		443	N/µm
Calculation factors
Calculation factor	f	1.08
Calculation factor	f₁	0.99
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	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

0.51

Model Number: 7211 ACD/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 roll neck and slowdown device,Optical detection,Laser Measurements,electronic materials,joint protection,ventilator anesthesia machine etc,other CNC,powder metallurgy,sterilizers,Leather Products,small appliances
Similar models:7211 BECBM 7211 BEGAP 7211 BEGBY 7211 BECBY S7211 ACD/P4A 7211 ACCBM 7211 CD/P4A 7211 ACD/P4A S7211 CD/HCP4A S7211 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 7211ACD/HCP4A products，there is large inventory of SKF 7211 ACD/HCP4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 7211 ACD/HCP4A Which SKF 7211ACD/HCP4A is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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