Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 ACB/HCP4A

71920 ACB/HCP4A

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		114.92	mm
d₂		113.16	mm
D₂		128.7	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		41.4	mm

Abutment dimensions

d_a	min.	106	mm
d_b	min.	106	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		116.1	mm

Calculation data

Basic dynamic load rating	C	27.6	kN
Basic static load rating	C₀	33.5	kN
Fatigue load limit	P_u	0.815	kN
Attainable speed for grease lubrication		13000	r/min
Attainable speed for oil-air lubrication		20000	r/min
Ball diameter	D_w	7.938	mm
Number of balls	z	37
Reference grease quantity	G_ref	9.96	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	125	N
Static axial stiffness, preload class A		178	N/µm
Preload class B	G_B	250	N
Static axial stiffness, preload class B		226	N/µm
Preload class C	G_C	750	N
Static axial stiffness, preload class C		343	N/µm
Calculation factors
Calculation factor	f	1.11
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
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

0.8

Model Number: 71920 ACB/HCP4A
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：2026-08-24
Application:switch,suction nozzle,static control,comprehensive experiment,Storage Tool,Broadcasting System,Liposuction device,car steering pin,flexible processing,Industrial Electromechanical,surgical instruments
Similar models:S71920 ACD/HCP4A PCM 171920 E 71920 CD/HCP4AH1 71920 CD/P4AH1 71920 CB/P4AL 71920 CE/P4AH1 71920 ACB/P4A 71920 ACE/P4AL 71920 ACE/P4A 71920 CB/HCP4AL
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Model No. Inner Diameter Outer Diameter Width Type

11776
32044T164 X/DB
403353
FSAF 22518 x 3.1/16 T
RLS 4-2Z

Purchase the SKF 71920 ACB/HCP4A Please fill in the following

Hot number： BD-23048-2CS5K/VT143-OH 3048 HE 23226 CC/W33 24916 35409 89326 M 99084 FYK 507 GEC 460 TXA-2RS HK 3520 KD21-354 PRMF 505530 SAF 23024 KA x 4 SAF 23024 KAT x 4.1/16 SSAFS 23038 KAT x 6.7/8 SYK 20 TR

Model No.	Inner Diameter	Outer Diameter	Width	Type
11776
32044T164 X/DB
403353
FSAF 22518 x 3.1/16 T
RLS 4-2Z