Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S7012 ACD/P4A

S7012 ACD/P4A

Dimensions

d		60	mm
D		95	mm
B		18	mm
d₁		70.8	mm
d₂		70.8	mm
D₂		86.74	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		27.2	mm

Abutment dimensions

d_a	min.	66	mm
d_a	max.	70.2	mm
d_b	min.	66	mm
d_b	max.	70.2	mm
D_a	max.	89	mm
D_b	max.	91.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	39	kN
Basic static load rating	C₀	33.5	kN
Fatigue load limit	P_u	1.4	kN
Attainable speed for grease lubrication		13000	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	19
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	240	N
Static axial stiffness, preload class A		168	N/µm
Preload class B	G_B	480	N
Static axial stiffness, preload class B		219	N/µm
Preload class C	G_C	960	N
Static axial stiffness, preload class C		291	N/µm
Preload class D	G_D	1920	N
Static axial stiffness, preload class D		393	N/µm
Calculation factors
Calculation factor	f	1.12
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.05
Calculation factor	f_2D	1.08
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

0.41

Model Number: S7012 ACD/P4A
Inner Diameter：60mm Outer Diameter：95mm Width：18mm
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:Die,Wire grinder,mathematical instruments,medical Equipment,outdoor equipment,Industrial,other CNC,survey accessories,Special Equipment,electronic components,Hairbrush device
Similar models:S7012 CD/HCP4A 7012 ACE/HCP4A 7012 CB/P4AL 7012 ACB/HCP4A S7012 CE/P4A 7012 ACB/P4A 7012 CB/HCP4A 7012 CD/P4AL 7012 CE/P4AH1 7012 ACD/HCP4AL
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