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：2026-06-24
Application:directional control valve,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,beverage production,industrial supplies,Oral Image,instrumentation instrument,altimeter etc,Pest Monitoring,Insect Capture,medical equipment,Machine Tool Accessories
Similar models:S7004 CD/P4A 7004 ACE/HCP4AL S7004 CE/HCP4A 7004 ACD/HCP4A 7004 ACE/P4AL1 S7004 ACD/HCP4A S7004 CD/HCP4A 7004 CE/HCP4A 7004 ACD/P4A 7004 CE/P4A
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Model No. Inner Diameter Outer Diameter Width Type

GS 81144
NJ 2208 ECP
NU 307 ECJ
PBMF 9511550 M1G1
S71912 CE/P4A

Purchase the SKF 7004 ACD/HCP4A Please fill in the following

Hot number： 2320 KM 23782 240/710 ECA/W33 365 VE R 71811 CD/P4 FYTBK 35 TD HE 316 NJ 203 ECML OH 31/750 HE PNA 25/47 PSM 202840 A51 PSM 354550 A51 SAL 15 C TU 35 FM WS 89328

Model No.	Inner Diameter	Outer Diameter	Width	Type
GS 81144
NJ 2208 ECP
NU 307 ECJ
PBMF 9511550 M1G1
S71912 CE/P4A