Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71805 ACD/HCP4

71805 ACD/HCP4

Dimensions

d		25	mm
D		37	mm
B		7	mm
d₁		29.1	mm
d₂		29.1	mm
D₁		33.1	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		10.8	mm

Abutment dimensions

d_a	min.	27	mm
d_b	min.	27	mm
D_a	max.	35	mm
D_b	max.	36.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		29.5	mm

Calculation data

Basic dynamic load rating	C	3.9	kN
Basic static load rating	C₀	3.05	kN
Fatigue load limit	P_u	0.129	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	20
Reference grease quantity	G_ref	0.21	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	35	N
Static axial stiffness, preload class A		67	N/µm
Preload class B	G_B	105	N
Static axial stiffness, preload class B		105	N/µm
Preload class C	G_C	210	N
Static axial stiffness, preload class C		142	N/µm
Calculation factors
Calculation factor	f	1.11
Calculation factor	f₁	0.97
Calculation factor	f_2A	1
Calculation factor	f_2B	1.09
Calculation factor	f_2C	1.17
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

0.019

Model Number: 71805 ACD/HCP4
Inner Diameter：25mm Outer Diameter：37mm 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：2026-08-24
Application:wire industry,Rolling mill gear box,thread processing machine,pneumatic,Optical detection,impression material,flexible processing,injection molding machine,EEG,other processing,hot and cold box
Similar models:71805 ACD/HCP4 71805 CD/P4 71805 ACD/P4 71805 CD/HCP4
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Model No. Inner Diameter Outer Diameter Width Type

15194
22317 E
K 75x83x30
PCM 8085100 E
SAF 22534 x 5.13/16

Purchase the SKF 71805 ACD/HCP4 Please fill in the following

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Model No.	Inner Diameter	Outer Diameter	Width	Type
15194
22317 E
K 75x83x30
PCM 8085100 E
SAF 22534 x 5.13/16