Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71903 CE/HCP4A

71903 CE/HCP4A

Dimensions

d		17	mm
D		30	mm
B		7	mm
d₁		21.1	mm
d₂		20.1	mm
D₁		25.9	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		7	mm

Abutment dimensions

d_a	min.	19	mm
d_b	min.	19	mm
D_a	max.	28	mm
D_b	max.	29.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		22	mm

Calculation data

Basic dynamic load rating	C	3.32	kN
Basic static load rating	C₀	1.56	kN
Fatigue load limit	P_u	0.067	kN
Attainable speed for grease lubrication		83000	r/min
Attainable speed for oil-air lubrication		127000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	13
Reference grease quantity	G_ref	0.2	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	18	N
Static axial stiffness, preload class A		16	N/µm
Preload class B	G_B	54	N
Static axial stiffness, preload class B		25	N/µm
Preload class C	G_C	108	N
Static axial stiffness, preload class C		34	N/µm
Calculation factors
Calculation factor	f	1.05
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	7.9

Mass

Mass bearing

0.014

Model Number: 71903 CE/HCP4A
Inner Diameter：17mm Outer Diameter：30mm Width：7mm
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：2026-04-16
Application:medical treatment,test laboratory equipment and accessories,Solenoid Valves,sewage pump,EEG,food packaging,Spectral Products,pump industry,journal lathe,plastic rolling,van
Similar models:S71903 CD/HCP4A 71903 CE/P4AH 71903 CD/P4A 71903 ACD/P4A S71903 ACD/P4A S71903 ACD/HCP4A 71903 ACE/P4A 71903 ACE/P4AH 71903 ACE/HCP4AH S71903 CD/P4A
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Hot number： 15508 33213 71919 ACB/HCP4AL 89414 TN AXW 40 C 2212 KV H 2313 E NU 1034 M N 04 PBM 142030 M1G1 PCM 081006 E PFD 17 FM PFT 17 FM SAF 1315 TLC SAF 1609