Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7212 CD/HCP4A

7212 CD/HCP4A

Dimensions

d		60	mm
D		110	mm
B		22	mm
d₁		76.4	mm
d₂		76.4	mm
D₁		93.6	mm
r_1,2	min.	1.5	mm
r_3,4	min.	0.6	mm
a		22.5	mm

Abutment dimensions

d_a	min.	69	mm
d_b	min.	69	mm
D_a	max.	101	mm
D_b	max.	105.8	mm
r_a	max.	1.5	mm
r_b	max.	0.6	mm
d_n		80.1	mm

Calculation data

Basic dynamic load rating	C	57.2	kN
Basic static load rating	C₀	46.5	kN
Fatigue load limit	P_u	2	kN
Attainable speed for grease lubrication		16000	r/min
Attainable speed for oil-air lubrication		24000	r/min
Ball diameter	D_w	14.288	mm
Number of balls	z	16
Reference grease quantity	G_ref	10.08	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	215	N
Static axial stiffness, preload class A		83	N/µm
Preload class B	G_B	430	N
Static axial stiffness, preload class B		113	N/µm
Preload class C	G_C	860	N
Static axial stiffness, preload class C		158	N/µm
Preload class D	G_D	1720	N
Static axial stiffness, preload class D		228	N/µm
Calculation factors
Calculation factor	f	1.07
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	14.9

Mass

Mass bearing

0.69

Model Number: 7212 CD/HCP4A
Inner Diameter：60mm Outer Diameter：110mm Width：22mm
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：2021-06-04
Application:Perfusion device,education model Instruments,clean stationery,chuck industry,pneumatic,defogging and degreasing,Solenoid Valves,Vacuum generator,car shock absorber,water,Plastic molding
Similar models:7212 BECBJ 7212 ACD/P4A 7212 BEGAM S7212 CD/P4A 7212 BEP 7212 ACD/HCP4A 7212 CD/HCP4A S7212 CD/HCP4A 7212 BECBM 7212 BECBP
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