Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71804 ACD/P4

71804 ACD/P4

Dimensions

d		20	mm
D		32	mm
B		7	mm
d₁		24.1	mm
d₂		24.1	mm
D₁		28.1	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		9.6	mm

Abutment dimensions

d_a	min.	22	mm
d_b	min.	22	mm
D_a	max.	30	mm
D_b	max.	31.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		24.5	mm

Calculation data

Basic dynamic load rating	C	3.64	kN
Basic static load rating	C₀	2.5	kN
Fatigue load limit	P_u	0.106	kN
Attainable speed for grease lubrication		40000	r/min
Attainable speed for oil-air lubrication		63000	r/min
Ball diameter	D_w	3.175	mm
Number of balls	z	17
Reference grease quantity	G_ref	0.18	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	32	N
Static axial stiffness, preload class A		52	N/µm
Preload class B	G_B	100	N
Static axial stiffness, preload class B		83	N/µm
Preload class C	G_C	200	N
Static axial stiffness, preload class C		112	N/µm
Calculation factors
Calculation factor	f	1.08
Calculation factor	f₁	0.97
Calculation factor	f_2A	1
Calculation factor	f_2B	1.08
Calculation factor	f_2C	1.15
Calculation factor	f_HC	1
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

0.018

Model Number: 71804 ACD/P4
Inner Diameter：20mm Outer Diameter：32mm 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：2026-06-24
Application:packaging machinery,Security Equipment,car instrument,labor insurance,forklift truck,Other machinery,office outdoor camping equipment,heating fans,Traffic Fire Protection Equipment Security equipment,sample cup,Hydraulic Hose
Similar models:71804 ACD/HCP4 71804 CD/P4 71804 CD/HCP4 71804 ACD/P4
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Model No. Inner Diameter Outer Diameter Width Type

61856
61919
99365
GEZM 112 ES
SYE 3 1/2-3

Purchase the SKF 71804 ACD/P4 Please fill in the following

Hot number： 190x225x15 HMS5 V BD-23276 CAK/W33-OH 3276 H 31261 314385 43x54x7.5 CRSA1 R 61817-2RS1 6308-RZ 7005 CE/HCP4AH1 7415 BGAM NNTR 70x180x85.2ZL PBM 455560 M1G1 SAF 1218 SAFS 22528 TU 1.1/2 TF W 637/8 XR

Model No.	Inner Diameter	Outer Diameter	Width	Type
61856
61919
99365
GEZM 112 ES
SYE 3 1/2-3