Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 CE/P4AH1

71920 CE/P4AH1

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		112.4	mm
d₂		109	mm
D₁		127.51	mm
K		0.5	mm
C₁		6.05	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		13300	r/min
Attainable speed for oil-air lubrication		20500	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		73	N/µm
Preload class B	G_B	624	N
Static axial stiffness, preload class B		116	N/µm
Preload class C	G_C	1250	N
Static axial stiffness, preload class C		160	N/µm
Calculation factors
Calculation factor	f	1.18
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1
Calculation factor	f₀	8.5

Mass

Mass bearing

0.77

Model Number: 71920 CE/P4AH1
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：2025-12-09
Application:manual Tools,motor,Pump,engine,ultra-quiet generators,Tool,Gripper Swing,static control,electrocardiograph,hanging clamp,extruder
Similar models:S71920 CD/HCP4A 71920 ACD/P4AL 71920 ACE/P4A S71920 CD/P4A 71920 CD/HCP4AL 71920 ACE/P4AL 71920 CD/HCP4A 71920 ACB/HCP4A 71920 CB/HCP4A 71920 ACD/P4AH1
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