Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71909 CE/HCP4AH1

71909 CE/HCP4AH1

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.7	mm
d₂		51	mm
D₁		60.3	mm
K		0.5	mm
C₁		3.75	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		34000	r/min
Attainable speed for oil-air lubrication		52000	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		37	N/µm
Preload class B	G_B	166	N
Static axial stiffness, preload class B		59	N/µm
Preload class C	G_C	331	N
Static axial stiffness, preload class C		81	N/µm
Calculation factors
Calculation factor	f	1.09
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.05
Calculation factor	f_2C	1.09
Calculation factor	f_HC	1.01
Calculation factor	f₀	8.4

Mass

Mass bearing

0.12

Model Number: 71909 CE/HCP4AH1
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 and testing equipment,Small air generators,steam Hydraulic control element,generator,Roller,miscellaneous instruments,bio-chemical,motor,Pest Monitoring,tire industry,Textile Industry Accessories and Accessories
Similar models:S71909 CE/P4A 71909 CB/P4AL 71909 CE/HCP4AH1 71909 CB/HCP4A 71909 CD/P4A S71909 ACE/P4A 71909 ACB/P4AL 71909 ACE/HCP4A 71909 ACE/HCP4AH1 71909 CE/P4AH1
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