Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71909 CE/P4AL

71909 CE/P4AL

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.7	mm
d₂		51	mm
D₁		60.3	mm
b		2	mm
C₁		5.9	mm
C₂		2.3	mm
C₃		1.8	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		14	mm

Abutment dimensions

d_a	min.	48.2	mm
d_b	min.	47	mm
D_a	max.	64.8	mm
D_b	max.	66	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm
d_n		54.2	mm

Calculation data

Basic dynamic load rating	C	10.1	kN
Basic static load rating	C₀	6.95	kN
Fatigue load limit	P_u	0.29	kN
Attainable speed for grease lubrication		29000	r/min
Attainable speed for oil-air lubrication		44000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	21
Reference grease quantity	G_ref	1.5	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	55	N
Static axial stiffness, preload class A		34	N/µm
Preload class B	G_B	166	N
Static axial stiffness, preload class B		53	N/µm
Preload class C	G_C	331	N
Static axial stiffness, preload class C		73	N/µm
Calculation factors
Calculation factor	f	1.09
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1
Calculation factor	f₀	8.4

Mass

Mass bearing

0.13

Model Number: 71909 CE/P4AL
Inner Diameter：45mm Outer Diameter：68mm Width：12mm
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:respirator,intermediate,motor,flexible processing,Storage Tool,equipment and,other accessories,pump accessories,hardware,glass processing machine,power protection
Similar models:71909 CE/HCP4AH1 71909 ACD/HCP4A S71909 ACE/HCP4A 71909 CD/P4A 71909 ACE/HCP4A 71909 ACE/P4AL 71909 CB/HCP4A S71909 CB/P4A S71909 CD/HCP4A 71909 ACD/P4A
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Hot number： 16036 22336 CC/W33 331807 51209 6007-RZ 71917 CE/P4A 71920 ACE/HCP4AL 87750/87111 C 6910 V NJ 1044 ML NJ 219 ECML PCMS 2005001.0 E PF 45 TF SAF 22536 x 6.3/8 SYK 35 WD