Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71901 CD/HCP4A

71901 CD/HCP4A

Dimensions

d		12	mm
D		24	mm
B		6	mm
d₁		16	mm
d₂		16	mm
D₁		20	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		5.4	mm

Abutment dimensions

d_a	min.	14	mm
d_b	min.	14	mm
D_a	max.	22	mm
D_b	max.	22.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		16.8	mm

Calculation data

Basic dynamic load rating	C	2.65	kN
Basic static load rating	C₀	1.25	kN
Fatigue load limit	P_u	0.053	kN
Attainable speed for grease lubrication		75000	r/min
Attainable speed for oil-air lubrication		110000	r/min
Ball diameter	D_w	3.175	mm
Number of balls	z	13
Reference grease quantity	G_ref	0.12	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	10	N
Static axial stiffness, preload class A		14	N/µm
Preload class B	G_B	20	N
Static axial stiffness, preload class B		19	N/µm
Preload class C	G_C	40	N
Static axial stiffness, preload class C		26	N/µm
Preload class D	G_D	80	N
Static axial stiffness, preload class D		37	N/µm
Calculation factors
Calculation factor	f	1.04
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.18
Calculation factor	f_HC	1.04
Calculation factor	f₀	9.8

Mass

Mass bearing

0.01

Model Number: 71901 CD/HCP4A
Inner Diameter：12mm Outer Diameter：24mm Width：6mm
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:Polymer,chuck industry,medical equipment,industrial equipment,clean stationery,other accessories,machining,Pump,medical equipment,motor,tapered grinder
Similar models:71901 ACE/P4AH 71901 ACE/P4A 71901 ACE/HCP4A 71901 CE/P4AH S71901 CD/HCP4A 71901 CD/HCP4A S71901 ACD/P4A S71901 ACD/HCP4A S71901 CD/P4A 71901 ACD/HCP4A
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