Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7004 ACD/HCP4A

7004 ACD/HCP4A

Dimensions

d		20	mm
D		42	mm
B		12	mm
d₁		27.1	mm
d₂		27.1	mm
D₁		34.8	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		13.3	mm

Abutment dimensions

d_a	min.	23.2	mm
d_b	min.	23.2	mm
D_a	max.	38.8	mm
D_b	max.	40	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm
d_n		28.4	mm

Calculation data

Basic dynamic load rating	C	8.32	kN
Basic static load rating	C₀	4.15	kN
Fatigue load limit	P_u	0.173	kN
Attainable speed for grease lubrication		45000	r/min
Attainable speed for oil-air lubrication		70000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	12
Reference grease quantity	G_ref	0.9	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	50	N
Static axial stiffness, preload class A		60	N/µm
Preload class B	G_B	100	N
Static axial stiffness, preload class B		77	N/µm
Preload class C	G_C	200	N
Static axial stiffness, preload class C		100	N/µm
Preload class D	G_D	400	N
Static axial stiffness, preload class D		133	N/µm
Calculation factors
Calculation factor	f	1.03
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

0.06

Model Number: 7004 ACD/HCP4A
Inner Diameter：20mm Outer Diameter：42mm Width：12mm
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:plastic molding,Broadcasting System,chuck industry,pneumatic,medical Equipment,Machine Tool Accessories,hydraulic pump,static control,container finishing,Industrial Adhesive,experimental equipment
Similar models:S7004 CD/P4A 7004 ACD/P4AH S7004 ACE/P4A 7004 CD/P4AH S7004 CD/HCP4A 7004 CD/P4A 7004 CE/HCP4A 7004 ACE/P4A 7004 ACE/P4AL 7004 ACE/HCP4AL
BEARING POWER International Trading Co.,Ltd. specialize in 7004ACD/HCP4A products，there is large inventory of SKF 7004 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 7004 ACD/HCP4A Which SKF 7004ACD/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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