Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 ACE/HCP4AH1

71920 ACE/HCP4AH1

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		39.2	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	36.4	kN
Basic static load rating	C₀	30	kN
Fatigue load limit	P_u	1.14	kN
Attainable speed for grease lubrication		13700	r/min
Attainable speed for oil-air lubrication		22000	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	332	N
Static axial stiffness, preload class A		207	N/µm
Preload class B	G_B	996	N
Static axial stiffness, preload class B		311	N/µm
Preload class C	G_C	1990	N
Static axial stiffness, preload class C		408	N/µm
Calculation factors
Calculation factor	f	1.18
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
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

0.65

Model Number: 71920 ACE/HCP4AH1
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：2026-04-16
Application:Dental Drill etc,Wire grinder,Laser Devices,textile machinery,directional control valve,diving equipment,mathematical instruments,Digital Generator,Spectrum Products,Dental Equipment,rolling mill roll neck and slowdown device
Similar models:S71920 CD/HCP4A 71920 ACD/P4A 71920 ACD/HCP4A S71920 CB/HCP4A S71920 ACD/P4A 71920 CB/P4A S71920 CB/P4A 71920 ACD/P4AH1 71920 CD/HCP4AL 71920 ACB/HCP4A
BEARING POWER International Trading Co.,Ltd. specialize in 71920ACE/HCP4AH1 products，there is large inventory of SKF 71920 ACE/HCP4AH1 Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71920 ACE/HCP4AH1 Which SKF 71920ACE/HCP4AH1 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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Hot number： 19832 26297 32256 J2 55x90x8 CRW1 R 6315-2RS1 709 CE/P4A 9998 BSD 45100 C NUTR 2052 X PF 25 FM PF 45 FM SAFS 22536 x 6.5/16 TLC SNL 526 TURU SSAFS 22224 SSAFS 23026 KATLC x 4.7/16