Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71904 CE/HCP4A

71904 CE/HCP4A

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		68000	r/min
Attainable speed for oil-air lubrication		106000	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		20	N/µm
Preload class B	G_B	79	N
Static axial stiffness, preload class B		31	N/µm
Preload class C	G_C	157	N
Static axial stiffness, preload class C		43	N/µm
Calculation factors
Calculation factor	f	1.04
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.05
Calculation factor	f_2C	1.09
Calculation factor	f_HC	1.01
Calculation factor	f₀	7.8

Mass

Mass bearing

0.032

Model Number: 71904 CE/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：2025-12-09
Application:DC generators,power tools,Storage Tool,Food testing,trolley,vertical pull,beverage production,power protection,Insect Capture,hydraulic pump,X-ray Equipment
Similar models:S71904 CD/HCP4A 71904 ACE/HCP4A 71904 CD/HCP4A 71904 CE/HCP4A S71904 CD/P4A S71904 ACD/P4A 71904 ACE/P4AL 71904 CE/P4AL 71904 ACD/P4A S71904 CE/HCP4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
13943	35.0012	50.0126	6.985	Seals
15802	40	52	14.3	Seals
360476 A	530	760	100	Bearings, units and housings
7206 BEGAY	30	62	16	Bearings, units and housings
72x95x12 HMS5 V	72	95	12	Seals
86426	-	-	33.02	Seals
FSAF 23024 KAT x 4.1/16	101.6	-	-	Bearings, units and housings
NUTR 17 X	17	40	21	Bearings, units and housings
OKCS 230	230		-
S7014 ACD/HCP4A	70	110	20	Bearings, units and housings
SNP 3196x18	457.2	480	322.9356	Bearings, units and housings
SSAFS 23028 KA x 4.7/8	123.825	-	-	Bearings, units and housings

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Hot number： 12533 16101-2Z 22205 EK 71964 ACDMA/HCP4A 99141 99259 FSAF 23024 KATLC x 4.3/16 HA 3030 K 10x16x12 TN NA 4832 NK 100/26 NNU 4926 BK/SPW33 P 35 FM PBMF 071208 M1 RNA 4836