Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71930 ACD/P4AH1

71930 ACD/P4AH1

Dimensions

d		150	mm
D		210	mm
B		28	mm
d₁		168.5	mm
d₂		168.5	mm
D₁		191.5	mm
K		0.6	mm
C₁		7.32	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		56.1	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	108	kN
Basic static load rating	C₀	125	kN
Fatigue load limit	P_u	3.9	kN
Attainable speed for grease lubrication		5600	r/min
Attainable speed for oil-air lubrication		8500	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	740	N
Static axial stiffness, preload class A		340	N/µm
Preload class B	G_B	1480	N
Static axial stiffness, preload class B		447	N/µm
Preload class C	G_C	2960	N
Static axial stiffness, preload class C		596	N/µm
Preload class D	G_D	5920	N
Static axial stiffness, preload class D		814	N/µm
Calculation factors
Calculation factor	f	1.24
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_2D	1.14
Calculation factor	f_HC	1
Calculation factor	e	0.68
Calculation factor (single, tandem)	Y₂	0.87
Calculation factor (single, tandem)	Y₀	0.38
Calculation factor (single, tandem)	X₂	0.41
Calculation factor (back-to-back, face-to-face)	Y₁	0.92
Calculation factor (back-to-back, face-to-face)	Y₂	1.41
Calculation factor (back-to-back, face-to-face)	Y₀	0.76
Calculation factor (back-to-back, face-to-face)	X₂	0.67

Mass

Mass bearing

2.5

Model Number: 71930 ACD/P4AH1
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:medical equipment,Plastic molding,magnetic elements,roller lathe,power source,Hairbrush device,Medium and large motor,Polymer,construction machinery and equipment,lathe,pneumatic Pump
Similar models:71930 CD/P4AL S71930 CD/HCP4A S71930 ACD/P4A 71930 ACD/P4AL 71930 ACD/HCP4AH1 71930 ACD/P4A 71930 CD/HCP4AH1 71930 CD/P4AH1 71930 ACD/HCP4AL 71930 CD/P4A
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Model No. Inner Diameter Outer Diameter Width Type

BD-23256 CCK/W33-AOH 2356 G
400144
LR 20x25x38.5
OKBS 78
YAR 208-108-2FW/VA228

Purchase the SKF 71930 ACD/P4AH1 Please fill in the following

Hot number： 140x180x12 HMSA10 V 22234-2CS5/VT143 28x47x7 HMSA10 V 305805 C-2Z 50x65x8 CRW1 R 6303-Z 7201 ACD/P4A 6311 N GS 89417 OH 3288 H OKTC 265 PSM 061412 A51 S7018 ACB/HCP4A SAFS 22515-11 x 2.1/2 T SAFS 22540 x 7.1/8

Model No.	Inner Diameter	Outer Diameter	Width	Type
BD-23256 CCK/W33-AOH 2356 G
400144
LR 20x25x38.5
OKBS 78
YAR 208-108-2FW/VA228