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

71930 ACD/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		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		6700	r/min
Attainable speed for oil-air lubrication		10000	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		377	N/µm
Preload class B	G_B	1480	N
Static axial stiffness, preload class B		496	N/µm
Preload class C	G_C	2960	N
Static axial stiffness, preload class C		662	N/µm
Preload class D	G_D	5920	N
Static axial stiffness, preload class D		904	N/µm
Calculation factors
Calculation factor	f	1.24
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.17
Calculation factor	f_HC	1.04
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

2.08

Model Number: 71930 ACD/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：2026-04-16
Application:Plastic Equipment,electromagnetic clutch,wheel lathe,wall industry,wire industry,Cylinder Micro,position switch,intermediate,paint paint,car shock absorber,pump
Similar models:71930 ACD/HCP4A 71930 CD/P4A S71930 CD/HCP4A 71930 ACD/HCP4AH1 71930 ACD/P4AL 71930 ACD/HCP4AL 71930 CD/HCP4AH1 S71930 ACD/P4A 71930 CD/HCP4A 71930 ACD/P4AH1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
30x42x7 HMS5 V	30	42	7	Seals
40x58x10 HMSA10 V	40	58	10	Seals
50.3x67.0x14.7 TP	50.29	67.59	-	Seals
C 2220	100	180	46	Bearings, units and housings
FY 3. UTF	76.2	-	-	Bearings, units and housings
FYTB 1.5/8 TF	41.275	-	-	Bearings, units and housings
GE 30 C	30	47	22	Bearings, units and housings
HME 30/500	68	-	500	Bearings, units and housings
NUP 309 ECP	45	100	25	Bearings, units and housings
SAF 22544 x 8 T	203.2	-	-	Bearings, units and housings
RPNA 28/44	28	44	20	Bearings, units and housings
SALKAC 16 M	16	-	21	Bearings, units and housings

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Hot number： 155x180x15 HMS5 V 180 VS R 29350 34868 411203 627-RSL 87631 AOH 24180 BT4-0039 E8/C355 C 3996 M GS 81210 K 75x83x30 N 28/900 MB SAF 1312 T SNL 518-615