Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71930 CD/P4AL

71930 CD/P4AL

Dimensions

d		150	mm
D		210	mm
B		28	mm
d₁		168.5	mm
d₂		168.5	mm
D₁		191.5	mm
b		2.6	mm
C₁		15.6	mm
C₂		6.6	mm
C₃		5.6	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		6300	r/min
Attainable speed for oil-air lubrication		9500	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		142	N/µm
Preload class B	G_B	940	N
Static axial stiffness, preload class B		195	N/µm
Preload class C	G_C	1880	N
Static axial stiffness, preload class C		276	N/µm
Preload class D	G_D	3760	N
Static axial stiffness, preload class D		405	N/µm
Calculation factors
Calculation factor	f	1.24
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	16.2

Mass

Mass bearing

2.5

Model Number: 71930 CD/P4AL
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：2026-04-16
Application:Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,journal lathe,leather processing,climb ladder,Warehouse Shelf Equipment,Hydraulic Press,stamping die,noise reduction equipment,pneumatic,Anti-defibrillation pacing,stamping die and its equipment
Similar models:71930 ACD/P4AH1 71930 CD/P4A 71930 CD/HCP4A 71930 CD/HCP4AL 71930 ACD/HCP4A 71930 CD/P4AL S71930 ACD/P4A 71930 ACD/HCP4AL 71930 ACD/P4AL 71930 ACD/P4A
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