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：2025-12-09
Application:building decoration raw materials and accessories,Other machinery,sucker industry,animal anatomy,stacker lift platform,Chromatography Products,hydraulic actuator,Oral Image,medical Equipment,coal,sheet industry
Similar models:71904 CE/HCP4A 71904 CE/HCP4AH S71904 ACD/HCP4A 71904 ACE/HCP4A S71904 CE/HCP4A S71904 CE/P4A 71904 ACE/P4AL 71904 ACD/HCP4A 71904 CD/P4A S71904 CD/P4A
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SHT 70	70	-	-	Coupling systems

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Hot number： 1313 EKTN9 13691 1850 VRME R 24184 ECA/W33 320x364x20 HDS2 D 4309 ATN9 89414 TN FYTB 1.15/16 LDW GEM 60 ES-2LS NJ 326 ECJ NKI 75/25 NU 2060 ECMA PCMS 1005001.5 M PCMW 203601.5 M SAFS 22534 x 6 T