Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71904 CE/P4AL

71904 CE/P4AL

Dimensions

d		20	mm
D		37	mm
B		9	mm
d₁		25.65	mm
d₂		24.4	mm
D₁		31.49	mm
b		1.5	mm
C₁		4.6	mm
C₂		1.4	mm
C₃		0.9	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		8.5	mm

Abutment dimensions

d_a	min.	22	mm
d_b	min.	22	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		26.7	mm

Calculation data

Basic dynamic load rating	C	4.88	kN
Basic static load rating	C₀	2.4	kN
Fatigue load limit	P_u	0.102	kN
Attainable speed for grease lubrication		56000	r/min
Attainable speed for oil-air lubrication		88000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	14
Reference grease quantity	G_ref	0.5	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	26	N
Static axial stiffness, preload class A		18	N/µm
Preload class B	G_B	79	N
Static axial stiffness, preload class B		28	N/µm
Preload class C	G_C	157	N
Static axial stiffness, preload class C		39	N/µm
Calculation factors
Calculation factor	f	1.04
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1
Calculation factor	f₀	7.8

Mass

Mass bearing

0.036

Model Number: 71904 CE/P4AL
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：2024-12-14
Application:ultra-quiet generators,Dental Drill etc,noise reduction equipment,boring bar boring bar,tooth filling,plastic blow molding,rubber products machinery and equipment,ventilation fans,granulator,building decoration raw materials and accessories,historical instruments
Similar models:S71904 CD/P4A S71904 ACD/P4A 71904 CE/HCP4A 71904 CD/P4A 71904 ACD/HCP4A 71904 CE/P4AH 71904 ACD/P4A 71904 CE/P4A 71904 ACE/HCP4AL S71904 ACE/HCP4A
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35x55x8 CRW1 R	35	55	8	Seals
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528273	1117.6	-	-	Seals
FY 12 TF	12	-	-	Bearings, units and housings
IR 25x32x22	25	32	22	Bearings, units and housings
N 1012 KTNHA/SP	60	95	18	Bearings, units and housings
OKBS 117	117	-	-
OKCS 270	270		-
SAF 1613 x 2.1/8 TLC	53.975	-	-	Bearings, units and housings
SALKAC 20 M	20	-	25	Bearings, units and housings
SHR 22	22	-	-	Coupling systems

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