Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71912 CD/P4AL

71912 CD/P4AL

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		15000	r/min
Attainable speed for oil-air lubrication		24000	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		50	N/µm
Preload class B	G_B	140	N
Static axial stiffness, preload class B		67	N/µm
Preload class C	G_C	280	N
Static axial stiffness, preload class C		92	N/µm
Preload class D	G_D	560	N
Static axial stiffness, preload class D		130	N/µm
Calculation factors
Calculation factor	f	1.17
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	10.5

Mass

Mass bearing

0.19

Model Number: 71912 CD/P4AL
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：2021-06-06
Application:instrument,hydraulic cylinder buffer,non-motor vehicle Electric car,medical equipment,set bacteria instrument,fabric products,flow control valve,horizontal processing,Traffic Fire Protection Equipment Security equipment,Pneumatic Actuator,linear drive
Similar models:S71912 ACB/HCP4A 71912 ACB/HCP4A 71912 CB/P4AL 71912 ACE/P4A 71912 CB/HCP4AL 71912 CB/HCP4A S71912 ACE/P4A S71912 CB/HCP4A S71912 CE/P4A 71912 ACB/HCP4AL
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Hot number： 12 VA V 12640 210x240x15 HMSA10 V 211-2ZNR 220 VL V 32236T192/DB 470571 61812 C 2207 KTN9 FY 2.11/16 TF GEZH 212 ES-2LS PCM 101212 M S71902 CD/HCP4A SAFS 22532 TLC W 61702 R-2Z