Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 719/8 ACE/HCP4A

719/8 ACE/HCP4A

Dimensions

d		8	mm
D		19	mm
B		6	mm
d₁		11.3	mm
d₂		10.76	mm
D₁		15.7	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		6.5	mm

Abutment dimensions

d_a	min.	10	mm
d_b	min.	10	mm
D_a	max.	17	mm
D_b	max.	18.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		12.2	mm

Calculation data

Basic dynamic load rating	C	1.68	kN
Basic static load rating	C₀	0.6	kN
Fatigue load limit	P_u	0.026	kN
Attainable speed for grease lubrication		130000	r/min
Attainable speed for oil-air lubrication		200000	r/min
Ball diameter	D_w	3.175	mm
Number of balls	z	9
Reference grease quantity	G_ref	0.09	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	15	N
Static axial stiffness, preload class A		23	N/µm
Preload class B	G_B	46	N
Static axial stiffness, preload class B		35	N/µm
Preload class C	G_C	91	N
Static axial stiffness, preload class C		46	N/µm
Calculation factors
Calculation factor	f	1.02
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

0.006

Model Number: 719/8 ACE/HCP4A
Inner Diameter：8mm Outer Diameter：19mm 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：2026-06-25
Application:medical equipment,Other machinery,tray industry,directional control valve,electrostatic protection,municipal machinery,Medium and large motor,Digital Generator,Seals,horizontal processing,electric pump
Similar models:S71906 ACD/HCP4A 71920 ACB/HCP4A S71907 CD/HCP4A 71918 CD/P4A 71916 ACE/P4A 71918 CE/P4A 71924 CB/HCP4AL 71902 CE/HCP4A 71934 ACD/HCP4AH1 71916 CE/P4AH1
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Model No. Inner Diameter Outer Diameter Width Type

220x260x20 HDS1 R
BD-21309 EK-H 309
H 210
NU 2968 M
SNW 40x7.1/4

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Hot number： 350 VRME R 42x55x8 HMS5 V 49927 6308/VA201 7020 CD/P4AH1 7209 BEGAP BT2B 332497/HA4 BT4B 331123 DG/HA1 N 208 ECMB NCF 18/950 V NNU 4952 BK/SPW33 SY 35 WDW W 032 W 602 XR-2ZS W 637/8 R-2ZS

Model No.	Inner Diameter	Outer Diameter	Width	Type
220x260x20 HDS1 R
BD-21309 EK-H 309
H 210
NU 2968 M
SNW 40x7.1/4