Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71904 ACE/HCP4A

S71904 ACE/HCP4A

Dimensions

d		20	mm
D		37	mm
B		9	mm
d₁		25.65	mm
d₂		24.4	mm
D₂		33.5	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		11.6	mm

Abutment dimensions

d_a	min.	22	mm
d_a	max.	25.3	mm
d_b	min.	22	mm
d_b	max.	24	mm
D_a	max.	35	mm
D_b	max.	36.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm

Calculation data

Basic dynamic load rating	C	4.68	kN
Basic static load rating	C₀	2.28	kN
Fatigue load limit	P_u	0.098	kN
Attainable speed for grease lubrication		60000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	14
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	42	N
Static axial stiffness, preload class A		52	N/µm
Preload class B	G_B	130	N
Static axial stiffness, preload class B		76	N/µm
Preload class C	G_C	250	N
Static axial stiffness, preload class C		98	N/µm
Calculation factors
Calculation factor	f	1.04
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
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: S71904 ACE/HCP4A
Inner Diameter：20mm Outer Diameter：37mm Width：9mm
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：2021-06-05
Application:thin metal materials,Industrial equipment,gear grinding machine,motor,hot and cold box,sleep monitoring,vacuum filter,product accessories,Beauty and Body,surgical instruments,textile machinery
Similar models:71904 CE/P4AH S71904 CD/P4A S71904 ACE/P4A 71904 CD/HCP4A 71904 CE/HCP4AH 71904 ACD/HCP4A 71904 CE/P4A 71904 ACE/P4AL 71904 ACE/P4AH 71904 CE/P4AL
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412603	1195	-	-	Seals
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SAW 23520 x 3.1/2 T	88.9	-	-	Bearings, units and housings
W 03	17.2466	33.7312	-	Bearings, units and housings

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