Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71930 CD/P4A

71930 CD/P4A

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		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/P4A
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：2025-12-09
Application:Hair styling device,Broadcasting System,Generator,Industrial equipment,Ball screw,Industrial,Water Monitoring,Cutting Machine,electromagnetic clutch,medical Equipment,Plastic molding
Similar models:71930 CD/HCP4AL 71930 ACD/P4AL 71930 ACD/HCP4AH1 71930 ACD/P4AH1 71930 CD/P4AL 71930 CD/P4AH1 71930 CD/HCP4AH1 S71930 ACD/P4A 71930 CD/HCP4A 71930 CD/P4A
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22x36x7 HMSA10 V	22	36	7	Seals
23035	58.7502	76.2	6.35	Seals
BD-23038 CCK/W33-H 3038	170	290	75	Bearings, units and housings
24320	61.9252	85.62	11.13	Seals
66217	168.275	193.68	12.7	Seals
7221 BECBM	105	190	36	Bearings, units and housings
FSAF 1516 x 2.3/4 T	69.85	-	-	Bearings, units and housings
HJ 236 EC	180	230.45	20	Bearings, units and housings
K 81134 TN	170	215		Bearings, units and housings
NA 4905 RS	25	42	17	Bearings, units and housings
SD 22x28x4	22	28	4	Seals
YAR 205-2RF/HV	25	52	34.1	Bearings, units and housings

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Hot number： 140x170x15 HMSA10 V 14855 16002-Z 1900 VL V 240/670 ECAK30/W33 32 VS V 618/1120 MA 6209-2ZNR 6303/HR11TN 91387 C 3080 KM K 115x123x27 K 40x45x17 SIR 100 ES SNW 11x1.3/4