Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71808 ACD/P4

71808 ACD/P4

Dimensions

d		40	mm
D		52	mm
B		7	mm
d₁		44.1	mm
d₂		44.1	mm
D₁		48.1	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		14.3	mm

Abutment dimensions

d_a	min.	42	mm
d_b	min.	42	mm
D_a	max.	50	mm
D_b	max.	51.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		44.5	mm

Calculation data

Basic dynamic load rating	C	4.49	kN
Basic static load rating	C₀	4.55	kN
Fatigue load limit	P_u	0.196	kN
Attainable speed for grease lubrication		22000	r/min
Attainable speed for oil-air lubrication		34000	r/min
Ball diameter	D_w	3.175	mm
Number of balls	z	29
Reference grease quantity	G_ref	0.31	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	40	N
Static axial stiffness, preload class A		83	N/µm
Preload class B	G_B	120	N
Static axial stiffness, preload class B		130	N/µm
Preload class C	G_C	240	N
Static axial stiffness, preload class C		178	N/µm
Calculation factors
Calculation factor	f	1.23
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

0.031

Model Number: 71808 ACD/P4
Inner Diameter：40mm Outer Diameter：52mm 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：2025-12-09
Application:E Beauty,walking Food processing machinery and equipment,Industrial Electromechanical,medical equipment,Power equipment,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,sanitation facilities,Medical printer,industrial fans,Cylinder Standard,bag machine
Similar models:71808 CD/P4 71808 CD/HCP4 71808 ACD/P4 71808 ACD/HCP4
BEARING POWER International Trading Co.,Ltd. specialize in 71808ACD/P4 products，there is large inventory of SKF 71808 ACD/P4 Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71808 ACD/P4 Which SKF 71808ACD/P4 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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
71908 ACD/P4A	40	62	12	Bearings, units and housings
71917 CE/HCP4AH1	85	120	18	Bearings, units and housings
90042	-	-	50	Seals
90888	-	-	30	Seals
TQO design	595.312	844.55	-	Bearings, units and housings
H 2330 L	135	150	139	Bearings, units and housings
NATR 12 PPXA	12	32	14	Bearings, units and housings
NU 29/950 ECMA	950	1250	175	Bearings, units and housings
NNCF 4928 CV	140	190	50	Bearings, units and housings
SE 212	60	-	-	Bearings, units and housings
SILKB 22 F	22	-	28	Bearings, units and housings
W 61906-2Z	30	47	9	Bearings, units and housings

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