Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 ACB/P4AL

71920 ACB/P4AL

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		114.92	mm
d₂		113.16	mm
D₂		128.7	mm
b		2.2	mm
C₁		10.9	mm
C₂		4.5	mm
C₃		2.9	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		11000	r/min
Attainable speed for oil-air lubrication		17000	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		157	N/µm
Preload class B	G_B	250	N
Static axial stiffness, preload class B		202	N/µm
Preload class C	G_C	750	N
Static axial stiffness, preload class C		306	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	1.07
Calculation factor	f_HC	1
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

0.85

Model Number: 71920 ACB/P4AL
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：2026-08-20
Application:mechanical and electrical,Pneumatic Control Valves,mechanical annex,Material handling equipment,gantry processing,surgical instruments,aerial work equipment,static control,economic mold,Spectrum Products,large agricultural machinery
Similar models:71920 ACE/HCP4AL 71920 ACB/P4A S71920 ACE/P4A PCM 171920 E S71920 CB/P4A S71920 ACD/P4A 71920 ACD/P4A 71920 ACB/HCP4A 71920 CD/HCP4AL 71920 ACD/P4AL
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Model No. Inner Diameter Outer Diameter Width Type

23124 CCK/W33
292/500
7012 ACD/HCP4A
SNW 3024x4.1/16
SYE 2 3/16

Purchase the SKF 71920 ACB/P4AL Please fill in the following

Hot number： 20520 34x52x8 HMS5 RG 71909 ACB/P4AL 98444 FSYE 2 11/16N-118 NCF 18/560 V/HB1 NCF 2932 CV NKS 35 NU 1876 ECM NU 20/500 ECMA NU 211 ECML SAW 23532 x 5.1/2 T W 628 YAR 209-112-2RF YAR 210-2FW/VA228

Model No.	Inner Diameter	Outer Diameter	Width	Type
23124 CCK/W33
292/500
7012 ACD/HCP4A
SNW 3024x4.1/16
SYE 2 3/16