Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71912 CD/HCP4AL

71912 CD/HCP4AL

Dimensions

d		60	mm
D		85	mm
B		13	mm
d₁		67.7	mm
d₂		67.7	mm
D₁		77.3	mm
b		2.2	mm
C₁		6.5	mm
C₂		3.2	mm
C₃		2	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		16.3	mm

Abutment dimensions

d_a	min.	64.6	mm
d_b	min.	64.6	mm
D_a	max.	80.4	mm
D_b	max.	83	mm
r_a	max.	1	mm
r_b	max.	0.3	mm
d_n		69.7	mm

Calculation data

Basic dynamic load rating	C	19.9	kN
Basic static load rating	C₀	15.3	kN
Fatigue load limit	P_u	0.655	kN
Attainable speed for grease lubrication		18000	r/min
Attainable speed for oil-air lubrication		28000	r/min
Ball diameter	D_w	7.938	mm
Number of balls	z	24
Reference grease quantity	G_ref	2.7	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	70	N
Static axial stiffness, preload class A		56	N/µm
Preload class B	G_B	140	N
Static axial stiffness, preload class B		74	N/µm
Preload class C	G_C	280	N
Static axial stiffness, preload class C		102	N/µm
Preload class D	G_D	560	N
Static axial stiffness, preload class D		145	N/µm
Calculation factors
Calculation factor	f	1.17
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.18
Calculation factor	f_HC	1.04
Calculation factor	f₀	10.5

Mass

Mass bearing

0.16

Model Number: 71912 CD/HCP4AL
Inner Diameter：60mm Outer Diameter：85mm Width：13mm
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：2024-12-13
Application:equipment,container finishing,agrochemical,key lock,medical equipment,wire industry,Film machine,tube,medical equipment,fruit and vegetable processing,Blood coagulation reagent
Similar models:71912 CD/HCP4A 71912 CE/P4AL S71912 ACD/P4A 71912 ACD/HCP4A 71912 ACE/HCP4A S71912 CD/HCP4A 71912 CB/HCP4A 71912 ACE/P4A 71912 CD/P4AL S71912 ACE/HCP4A
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