Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 709 ACD/HCP4A

709 ACD/HCP4A

Dimensions

d		9	mm
D		24	mm
B		7	mm
d₁		14.1	mm
d₂		14.1	mm
D₁		18.9	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		7.4	mm

Abutment dimensions

d_a	min.	11	mm
d_b	min.	11	mm
D_a	max.	22	mm
D_b	max.	22.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		15.1	mm

Calculation data

Basic dynamic load rating	C	3.45	kN
Basic static load rating	C₀	1.53	kN
Fatigue load limit	P_u	0.064	kN
Attainable speed for grease lubrication		85000	r/min
Attainable speed for oil-air lubrication		130000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	10
Reference grease quantity	G_ref	0.18	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	20	N
Static axial stiffness, preload class A		34	N/µm
Preload class B	G_B	40	N
Static axial stiffness, preload class B		44	N/µm
Preload class C	G_C	80	N
Static axial stiffness, preload class C		57	N/µm
Preload class D	G_D	160	N
Static axial stiffness, preload class D		76	N/µm
Calculation factors
Calculation factor	f	1.02
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.05
Calculation factor	f_2D	1.08
Calculation factor	f_HC	1.02
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

0.013

Model Number: 709 ACD/HCP4A
Inner Diameter：9mm Outer Diameter：24mm Width：7mm
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：2026-04-17
Application:powder metallurgy,electrocardiograph,non-motor vehicle Electric car,transistor fittings,relay,Cylinder Pneumatic Treatment Element,bio-chemical,laser devices,Cylinder Micro,universal category,Insect Count
Similar models:709 ACE/HCP4AH PCMF 151709 E 709 CE/P4A PRM 323709.8 AXK 7095 709 CD/P4AH 7096 AM 7096 BM 709 ACD/P4A 709 CD/HCP4AH
BEARING POWER International Trading Co.,Ltd. specialize in 709ACD/HCP4A products，there is large inventory of SKF 709 ACD/HCP4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 709 ACD/HCP4A Which SKF 709ACD/HCP4A is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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