Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71952 ACD/HCP4A

71952 ACD/HCP4A

Dimensions

d		260	mm
D		360	mm
B		46	mm
d₁		291.8	mm
d₂		291.8	mm
D₁		328.2	mm
r_1,2	min.	2.1	mm
r_3,4	min.	1.1	mm
a		95.5	mm

Abutment dimensions

d_a	min.	271	mm
d_b	min.	271	mm
D_a	max.	349	mm
D_b	max.	354	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		299.7	mm

Calculation data

Basic dynamic load rating	C	265	kN
Basic static load rating	C₀	400	kN
Fatigue load limit	P_u	9.65	kN
Attainable speed for grease lubrication		3600	r/min
Attainable speed for oil-air lubrication		5300	r/min
Ball diameter	D_w	30.162	mm
Number of balls	z	29
Reference grease quantity	G_ref	150	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	1650	N
Static axial stiffness, preload class A		683	N/µm
Preload class B	G_B	3300	N
Static axial stiffness, preload class B		895	N/µm
Preload class C	G_C	6600	N
Static axial stiffness, preload class C		1189	N/µm
Preload class D	G_D	13200	N
Static axial stiffness, preload class D		1615	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

10.4

Model Number: 71952 ACD/HCP4A
Inner Diameter：260mm Outer Diameter：360mm Width：46mm
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：2026-04-22
Application:meat products machine,SPA equipment,chemical instruments,printing equipment,Plastic Equipment,Other machinery,blood cell reagent,air shower etc,Automobile,insect experimental analysis instrument,injection molding machine
Similar models:71952 ACD/HCP4A 71952 CD/HCP4A 71952 ACD/P4A 71952 CD/P4AL 71952 ACD/HCP4AL 71952 CD/P4A 71952 CD/HCP4AL
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Model No. Inner Diameter Outer Diameter Width Type

1900211
PCMW 487402 M
SAF 22628 x 4.13/16 TLC
RMS 7
S7001 CD/HCP4A

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Hot number： 1169110 BD-22206 EK-H 306 32052 X/DF 320x364x20 HDS2 D 470396 47x62x8 CRW1 R 61812-2RZ 6306/HR22T2 71917 CB/P4A NCF 1864 V NJ 28/710 ECMA SAW 23518 x 3.1/4 TLC SNW 3044x7.13/16 SY 40 TR W 61812

Model No.	Inner Diameter	Outer Diameter	Width	Type
1900211
PCMW 487402 M
SAF 22628 x 4.13/16 TLC
RMS 7
S7001 CD/HCP4A