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

7211 CD/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		21	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	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
Attainable speed for oil-air lubrication		26000	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	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

0.51

Model Number: 7211 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:tapping machine,medical equipment,rubber products machinery and equipment,industrial skin care,Hairbrush device,pump industry,joint protection,pneumatic Pump,car steering pin,extruder,power protection
Similar models:7211 BECBP 7211 BECBY S7211 ACD/P4A 7211 ACD/HCP4A 7211 BECBPH 7211 ACCBM 7211 BECBM 7211 BE-2RZP S7211 CD/P4A 7211 CD/HCP4A
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10x25x7 HMS5 V	10	25	7	Seals
14747	38	58	10	Seals
16004	20	42	8	Bearings, units and housings
25x45x8 HMSA10 RG	25	45	8	Seals
4 VA R	3.2	-	-	Seals
395 VRME R	386	-	-	Seals
51256 M	280	380	80	Bearings, units and housings
900 VA V	825	-	-	Seals
GEP 440 FS	440	630	315	Bearings, units and housings
NUP 316 ECML	80	170	39	Bearings, units and housings
SAFS 22238 T	190	-	-	Bearings, units and housings
SI 12 E	12	-	10	Bearings, units and housings

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