Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71909 CE/P4A

71909 CE/P4A

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.7	mm
d₂		51	mm
D₁		60.3	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/P4A
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：2025-12-09
Application:marine analysis,pump accessories,agricultural testing and analysis equipment and related,pressure control valve,Broadcasting System,Medium and large motor,tapping machine,air purification,coupling type,office outdoor camping equipment,Cylinder Type
Similar models:S71909 CD/HCP4A S71909 ACE/P4A S71909 CB/P4A 71909 ACE/HCP4A 71909 ACE/P4A 71909 CE/HCP4AH1 71909 CE/P4AL S71909 ACD/P4A 71909 CE/P4A 71909 ACE/HCP4AH1
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Hot number： 19886 409303 6011 M 6308 N 6312-Z 7010 ACD/P4AL 71220 90020 GEZ 112 ESX-2LS IR 15x19x16 NU 2214 ECJ PWKR 40.2RS SAF 23040 KATLC x 7.1/4 W 6202 YAR 204-2FW/VA228