Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71928 ACD/P4A

S71928 ACD/P4A

Dimensions

d		140	mm
D		190	mm
B		24	mm
d₁		155.4	mm
d₂		155.4	mm
D₂		178.25	mm
r_1,2	min.	1.5	mm
r_3,4	min.	0.6	mm
a		50.6	mm

Abutment dimensions

d_a	min.	147	mm
d_a	max.	154.8	mm
d_b	min.	147	mm
d_b	max.	154.8	mm
D_a	max.	183	mm
D_b	max.	186	mm
r_a	max.	1.5	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	90.4	kN
Basic static load rating	C₀	110	kN
Fatigue load limit	P_u	3.65	kN
Attainable speed for grease lubrication		6000	r/min
Ball diameter	D_w	15.875	mm
Number of balls	z	29
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	560	N
Static axial stiffness, preload class A		348	N/µm
Preload class B	G_B	1120	N
Static axial stiffness, preload class B		457	N/µm
Preload class C	G_C	2240	N
Static axial stiffness, preload class C		614	N/µm
Preload class D	G_D	4480	N
Static axial stiffness, preload class D		841	N/µm
Calculation factors
Calculation factor	f	1.29
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_2D	1.14
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

1.69

Model Number: S71928 ACD/P4A
Inner Diameter：140mm Outer Diameter：190mm Width：24mm
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:position switch,ventilation fans,electromyography machine,forklift industry,Hydraulic Equipment,Leather Products,municipal machinery,non-ferrous metal alloy,luminescent reagent,heating fans,Chromatography Products
Similar models:S71928 ACD/HCP4A 71928 ACD/P4AL S71928 CD/P4A 71928 ACD/P4A S71928 ACD/P4A 71928 CD/HCP4A 71928 ACD/HCP4AH1 71928 ACD/HCP4AL 71928 CD/HCP4AL S71928 CD/HCP4A
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81156 M	280	350	53	Bearings, units and housings
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BC4B 457969	633.334	960	-	Bearings, units and housings
BD-C 3192 KM-AOHX 3192 G	440	760	240	Bearings, units and housings
FSYE 2 3/4-3	69.85	-	-	Bearings, units and housings
K 110x118x30	110	118	30	Bearings, units and housings
P 20 FM	20	-	-	Bearings, units and housings
SAFS 22540 x 7.1/8	180.975	-	-	Bearings, units and housings
W 12	60.96	84.9376	-	Bearings, units and housings
YEL 205-2F	25	52	34.9	Bearings, units and housings

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Hot number： 1000 VL R 22363 24052 CCK30/W33 25x47x10 HMS5 RG 30234/DF 50x65x8 HMS5 V 618/670 MA 6210 M 71968 ACDMA/HCP4A 89440 M FSYE 2 1/2 FYE 2 NU 207 ECPH PSM 254535 A51 SYNT 80 LTF