Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71909 ACE/P4A

S71909 ACE/P4A

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.7	mm
d₂		51	mm
D₂		62.6	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		20	mm

Abutment dimensions

d_a	min.	48.2	mm
d_a	max.	52.1	mm
d_b	min.	47	mm
d_b	max.	50.4	mm
D_a	max.	64.8	mm
D_b	max.	66	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	9.75	kN
Basic static load rating	C₀	6.55	kN
Fatigue load limit	P_u	0.275	kN
Attainable speed for grease lubrication		25000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	21
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	88	N
Static axial stiffness, preload class A		85	N/µm
Preload class B	G_B	265	N
Static axial stiffness, preload class B		127	N/µm
Preload class C	G_C	529	N
Static axial stiffness, preload class C		166	N/µm
Calculation factors
Calculation factor	f	1.09
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.07
Calculation factor	f_HC	1
Calculation factor	e	0.68
Calculation factor (single, tandem)	Y₂	0.87
Calculation factor (single, tandem)	Y₀	0.38
Calculation factor (single, tandem)	X₂	0.41
Calculation factor (back-to-back, face-to-face)	Y₁	0.92
Calculation factor (back-to-back, face-to-face)	Y₂	1.41
Calculation factor (back-to-back, face-to-face)	Y₀	0.76
Calculation factor (back-to-back, face-to-face)	X₂	0.67

Mass

Mass bearing

0.13

Model Number: S71909 ACE/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：2024-12-13
Application:pneumatic Pump,Die,rock drilling machinery,pump industry,Pneumatic Actuator,Control,ultra-quiet generators,medical equipment,Industrial Electromechanical,Anesthetic Equipment,Broadcasting System
Similar models:S71909 CD/P4A 71909 CD/HCP4A 71909 CB/HCP4AL 71909 ACB/P4AL 71909 CE/P4A 71909 CE/P4AL 71909 ACD/HCP4A 71909 CE/P4AH1 S71909 ACB/HCP4A 71909 ACE/HCP4A
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7000 CD/P4AH	10	26	8	Bearings, units and housings
7015 ACE/HCP4A	75	115	20	Bearings, units and housings
AXK 4565	45	65	3	Bearings, units and housings
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NNU 4980 BK/SPW33	400	540	140	Bearings, units and housings
SAFS 22518 x 3.1/8	79.375	-	-	Bearings, units and housings
SAW 23536 x 6.1/2 T	165.1	-	-	Bearings, units and housings
SNL 506-605	25	-	-	Bearings, units and housings
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Hot number： 2209 ETN9 29492 EM 408403 71914 ACB/P4A FSAF 22516 TLC FYTWR 1.1/2 YTHR HK 3026 IR 15X20X12 IS1 NA 4860 NATV 30 PPXA NU 2968 M OKF 400 SAF 22517 TLC SAFS 22224 T SAW 23544 x 7.1/2 TLC