Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71930 CD/HCP4A

71930 CD/HCP4A

Dimensions

d		150	mm
D		210	mm
B		28	mm
d₁		168.5	mm
d₂		168.5	mm
D₁		191.5	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		38.2	mm

Abutment dimensions

d_a	min.	159	mm
d_b	min.	159	mm
D_a	max.	201	mm
D_b	max.	205	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		173.5	mm

Calculation data

Basic dynamic load rating	C	114	kN
Basic static load rating	C₀	132	kN
Fatigue load limit	P_u	4.15	kN
Attainable speed for grease lubrication		7500	r/min
Attainable speed for oil-air lubrication		11000	r/min
Ball diameter	D_w	19.05	mm
Number of balls	z	23
Reference grease quantity	G_ref	35	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	470	N
Static axial stiffness, preload class A		158	N/µm
Preload class B	G_B	940	N
Static axial stiffness, preload class B		216	N/µm
Preload class C	G_C	1880	N
Static axial stiffness, preload class C		306	N/µm
Preload class D	G_D	3760	N
Static axial stiffness, preload class D		450	N/µm
Calculation factors
Calculation factor	f	1.24
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	16.2

Mass

Mass bearing

2.08

Model Number: 71930 CD/HCP4A
Inner Diameter：150mm Outer Diameter：210mm Width：28mm
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：2026-06-25
Application:Plastic Equipment,internal combustion engine,coal mill,ship special,equipment,teaching equipment,organic raw materials,Chromatography Products,power protection,Hydraulic Rama,Film machine
Similar models:71930 ACD/P4A 71930 CD/P4AL 71930 ACD/HCP4AL 71930 ACD/P4AH1 71930 ACD/P4AL S71930 CD/HCP4A 71930 CD/HCP4A S71930 ACD/HCP4A 71930 ACD/HCP4AH1 71930 CD/HCP4AL
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Model No. Inner Diameter Outer Diameter Width Type

3201 A-2RS1
6314/HC5C3
PSM 253220 A51
RLS 14
S7022 ACB/P4A

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Hot number： 140 VS R 240/1000 CAF/W33 3310 ATN9 TQO design 6207-2Z/VA208 7021 CD/P4AL 71914 CB/HCP4A 7469 D/W R2A-2Z NUP 217 ECML NJ 230 ECML OH 3956 H S71901 CD/P4A SI 80 ESX-2LS SNL 3084 TURT

Model No.	Inner Diameter	Outer Diameter	Width	Type
3201 A-2RS1
6314/HC5C3
PSM 253220 A51
RLS 14
S7022 ACB/P4A