Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71926 ACD/HCP4A

S71926 ACD/HCP4A

Dimensions

d		130	mm
D		180	mm
B		24	mm
d₁		145.4	mm
d₂		145.4	mm
D₂		168.25	mm
r_1,2	min.	1.5	mm
r_3,4	min.	0.6	mm
a		48.3	mm

Abutment dimensions

d_a	min.	137	mm
d_a	max.	144.8	mm
d_b	min.	137	mm
d_b	max.	144.8	mm
D_a	max.	173	mm
D_b	max.	176	mm
r_a	max.	1.5	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	87.1	kN
Basic static load rating	C₀	102	kN
Fatigue load limit	P_u	3.45	kN
Attainable speed for grease lubrication		7500	r/min
Ball diameter	D_w	15.875	mm
Number of balls	z	27
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	540	N
Static axial stiffness, preload class A		361	N/µm
Preload class B	G_B	1080	N
Static axial stiffness, preload class B		474	N/µm
Preload class C	G_C	2160	N
Static axial stiffness, preload class C		633	N/µm
Preload class D	G_D	4320	N
Static axial stiffness, preload class D		866	N/µm
Calculation factors
Calculation factor	f	1.25
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.17
Calculation factor	f_HC	1.04
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

1.31

Model Number: S71926 ACD/HCP4A
Inner Diameter：130mm Outer Diameter：180mm 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：2026-06-24
Application:shoe-making machinery,gear grinding machine,electronic components,impression material,building decoration raw materials and accessories,transportation equipment,security equipment,Industrial,textile machinery,fruit and vegetable processing,non-ferrous metal alloy
Similar models:71926 ACD/P4A S71926 CD/HCP4A S71926 CD/P4A 71926 CD/HCP4A 71926 ACD/P4AL 71926 CD/P4AH1 S71926 ACD/HCP4A 71926 ACD/P4AH1 S71926 ACD/P4A 71926 CD/HCP4AH1
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Model No. Inner Diameter Outer Diameter Width Type

17315
42557
FYTB 1.1/2 TDW
PRM 283225
SYFJ 508

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Hot number： BD-22256 CCK/W33-OH 3156 H 23032-2CS5K/VT143 24060 CCK30/W33 + AOH 24060 G 3215 A 37340 470811 7209 BEGAP FSAF 1517 x 2.7/8 GEH 50 ES-2RS HME 31/750 NK 17/20 NU 2084 ECMA SAF 22538 x 6.7/8 SSAFS 22532 x 5.3/8 T W 619/6 R-2RS1

Model No.	Inner Diameter	Outer Diameter	Width	Type
17315
42557
FYTB 1.1/2 TDW
PRM 283225
SYFJ 508