Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71904 CE/P4A

71904 CE/P4A

Dimensions

d		20	mm
D		37	mm
B		9	mm
d₁		25.65	mm
d₂		24.4	mm
D₁		31.49	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/P4A
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:water,knitted fabrics,economic mold,Anti-defibrillation pacing,metal mold,marine analysis,Logistics Equipment,paint paint,Pneumatic Actuator,noise inspection,generator
Similar models:71904 CD/HCP4A S71904 CE/HCP4A 71904 CD/P4A S71904 CD/HCP4A 71904 CE/P4AL 71904 ACE/HCP4A 71904 CE/P4A 71904 CE/HCP4A S71904 ACE/P4A S71904 CD/P4A
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K 81260 M	300	420		Bearings, units and housings
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Hot number： 1000114 1525 VE R 110x150x12 HMSA10 V 23240 CC/W33 54959 7017 CE/P4AL 89172 M 99226 GEZ 400 ES-2RS N 2252 MB OKF 650 RLS 7-2Z SNL 3076 TURA SSAFS 23044 KA x 7.15/16 SYNT 35 LW