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：2024-12-13
Application:Performance test,plastic molding,Spectrum Products,Dental Equipment,Industrial Electromechanical,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,Special Equipment,ventilator anesthesia machine etc,tapping machine,pressure control valve,food sterilization
Similar models:71904 CE/P4AL 71904 ACE/P4AL 71904 ACE/P4AH 71904 CE/HCP4A 71904 ACE/HCP4A 71904 CE/HCP4AH S71904 ACE/HCP4A S71904 CE/HCP4A 71904 CE/P4A 71904 CE/P4AH
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Model No.	Inner Diameter	Outer Diameter	Width	Type
35x55x8 CRW1 R	35	55	8	Seals
46x59x12 HMS5 V	46	59	12	Seals
400051	4	-	-	Seals
50x85x10 HMS5 RG	50	85	10	Seals
71907 CD/P4A	35	55	10	Bearings, units and housings
72x100x10 HMSA10 V	72	100	10	Seals
9515	24	40	8	Seals
BT2B 328580/HA1	384.175	546.1	-	Bearings, units and housings
NF 19/750 ECMB/HA1	750	1000	112	Bearings, units and housings
NU 1015 M/C3VL0241	75	115	20	Bearings, units and housings
OH 3196 H	450	480	335	Bearings, units and housings
SAF 22544 x 8 T	203.2	-	-	Bearings, units and housings

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Hot number： 11740 12428 16002-2Z 37340 525092 6308/HR11TN 7000 CD/HCP4A FSAF 22613 T LS 6085 NNCF 4916 CV OKCX 520 RN-3.5x17.8 BF/G2 S71906 CD/P4A SAFS 22526 x 4.1/2 T SNW 9x1.1/2