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

71904 CD/P4A

Dimensions

d		20	mm
D		37	mm
B		9	mm
d₁		25.6	mm
d₂		25.6	mm
D₁		31.4	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		8.4	mm

Abutment dimensions

d_a	min.	22	mm
d_b	min.	22	mm
D_a	max.	35	mm
D_b	max.	35.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		26.8	mm

Calculation data

Basic dynamic load rating	C	6.05	kN
Basic static load rating	C₀	3.2	kN
Fatigue load limit	P_u	0.137	kN
Attainable speed for grease lubrication		43000	r/min
Attainable speed for oil-air lubrication		63000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	15
Reference grease quantity	G_ref	0.45	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	25	N
Static axial stiffness, preload class A		22	N/µm
Preload class B	G_B	50	N
Static axial stiffness, preload class B		29	N/µm
Preload class C	G_C	100	N
Static axial stiffness, preload class C		40	N/µm
Preload class D	G_D	200	N
Static axial stiffness, preload class D		56	N/µm
Calculation factors
Calculation factor	f	1.05
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	9.8

Mass

Mass bearing

0.035

Model Number: 71904 CD/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:office equipment,Internal thread type,floor industry,extruder,Air,spectrometer,medical equipment,education model Instruments,respirator,leather processing,squeeze machine etc
Similar models:71904 ACD/HCP4A 71904 CE/HCP4AH 71904 CE/P4A 71904 ACD/P4A 71904 ACE/P4AL S71904 CE/P4A S71904 ACD/P4A S71904 ACE/P4A S71904 ACE/HCP4A 71904 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71904CD/P4A products，there is large inventory of SKF 71904 CD/P4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71904 CD/P4A Which SKF 71904CD/P4A is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

Model No.	Inner Diameter	Outer Diameter	Width	Type
26625	67.9958	83.9978	8.509	Seals
319040 A	340	480	-	Bearings, units and housings
7006 ACE/HCP4AL	30	55	13	Bearings, units and housings
AOH 24168	320	340	269	Bearings, units and housings
BD-C 30/850 KMB-AOH 30/850	800	1220	272	Bearings, units and housings
FY 45 TF/VA228	45	-	54.2	Bearings, units and housings
NJ 2305 ECML	25	62	24	Bearings, units and housings
NK 26/20	26	34	20	Bearings, units and housings
NU 2268 MA	340	620	165	Bearings, units and housings
S71917 ACB/HCP4A	85	120	18	Bearings, units and housings
SNW 3140x7.3/16	182.5625	200	139.0396	Bearings, units and housings
Z 010	50	-	6	Seals

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Hot number： 170 VA V 32017T66 X/DB 47382 6203-2Z/VA228 700 VA R 7020 CD/P4AL 85x100x9 HMS5 RG FYT 40 TF/VA201 OKBS 96 PCM 15015560 M PRM 353940 PSM 081408 A51 SNL 3040 TURT SYWK 1.1/2 YTH YSP 207-106 SB-2F