Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 719/9 ACE/HCP4AH

719/9 ACE/HCP4AH

Dimensions

d		9	mm
D		20	mm
B		6	mm
d₁		12.5	mm
d₂		11.76	mm
D₁		16.52	mm
K		0.5	mm
C₁		3.65	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		6.9	mm

Abutment dimensions

d_a	min.	11	mm
d_b	min.	11	mm
D_a	max.	18	mm
D_b	max.	19.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		13.3	mm

Calculation data

Basic dynamic load rating	C	1.95	kN
Basic static load rating	C₀	0.765	kN
Fatigue load limit	P_u	0.032	kN
Attainable speed for grease lubrication		120000	r/min
Attainable speed for oil-air lubrication		180000	r/min
Ball diameter	D_w	3.175	mm
Number of balls	z	11
Reference grease quantity	G_ref	0.09	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	17	N
Static axial stiffness, preload class A		28	N/µm
Preload class B	G_B	50	N
Static axial stiffness, preload class B		41	N/µm
Preload class C	G_C	100	N
Static axial stiffness, preload class C		54	N/µm
Calculation factors
Calculation factor	f	1.03
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

0.007

Model Number: 719/9 ACE/HCP4AH
Inner Diameter：9mm Outer Diameter：20mm Width：6mm
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：2026-08-12
Application:power tools,forming machine,textile machinery,standing experimental equipment,beverage production,Broadcasting System,static control,security equipment,position switch,chuck industry,paint paint
Similar models:71924 CE/P4A 71917 CE/P4A 71936 ACD/HCP4AH1 71926 CD/HCP4AL 71934 ACD/HCP4A 71952 ACD/HCP4AL S71908 CB/P4A 71917 CD/P4AH1 71915 ACD/P4A 71902 CE/HCP4AH
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Model No. Inner Diameter Outer Diameter Width Type

20x30x7 HMSA10 V
BD-21313 EK-AH 313 G
7313 ACCBM
H 3126
SAF 23028 KA x 4.7/8

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Hot number： 115x140x12 CRW1 V 28x40x7 HMSA10 V 32x42x7 HMSA10 V 330x370x16 HDS2 R 61814 6412 7213 BECBM BD-C 3136 K-AH 3136 G H 2306 IR 130x150x50 EGS HJ 422 NCF 2932 CV NCF 3007 CV STO 12 W 628/5-2RS1

Model No.	Inner Diameter	Outer Diameter	Width	Type
20x30x7 HMSA10 V
BD-21313 EK-AH 313 G
7313 ACCBM
H 3126
SAF 23028 KA x 4.7/8