Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 CE/HCP4AL

71920 CE/HCP4AL

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		112.4	mm
d₂		109	mm
D₁		127.51	mm
b		2.3	mm
C₁		10.9	mm
C₂		3	mm
C₃		3.3	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		26.7	mm

Abutment dimensions

d_a	min.	106	mm
d_b	min.	103.2	mm
D_a	max.	134	mm
D_b	max.	136.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm
d_n		115.4	mm

Calculation data

Basic dynamic load rating	C	39	kN
Basic static load rating	C₀	31.5	kN
Fatigue load limit	P_u	1.2	kN
Attainable speed for grease lubrication		15500	r/min
Attainable speed for oil-air lubrication		24000	r/min
Ball diameter	D_w	12.7	mm
Number of balls	z	24
Reference grease quantity	G_ref	10	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	208	N
Static axial stiffness, preload class A		81	N/µm
Preload class B	G_B	624	N
Static axial stiffness, preload class B		129	N/µm
Preload class C	G_C	1250	N
Static axial stiffness, preload class C		178	N/µm
Calculation factors
Calculation factor	f	1.18
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.05
Calculation factor	f_2C	1.09
Calculation factor	f_HC	1.01
Calculation factor	f₀	8.5

Mass

Mass bearing

0.65

Model Number: 71920 CE/HCP4AL
Inner Diameter：100mm Outer Diameter：140mm Width：20mm
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：2024-12-13
Application:reducer,Gear grinding machine,education model Instruments,mathematical instruments,food / grain / food equipment,Internal thread type,Perfusion device,Industrial Electromechanical,Pump,medical Equipment,quality inspection equipment
Similar models:S71920 CD/HCP4A S71920 ACD/HCP4A 71920 CE/P4AH1 71920 CD/HCP4AL 71920 CB/P4A 71920 ACE/HCP4A PCM 171920 E S71920 ACE/P4A 71920 CD/HCP4A 71920 ACD/HCP4A
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