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

S71909 ACD/P4A

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.6	mm
d₂		52.6	mm
D₂		62.62	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		19.3	mm

Abutment dimensions

d_a	min.	48.2	mm
d_a	max.	52.1	mm
d_b	min.	48.2	mm
d_b	max.	52.1	mm
D_a	max.	64.8	mm
D_b	max.	66.6	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	12.4	kN
Basic static load rating	C₀	9	kN
Fatigue load limit	P_u	0.38	kN
Attainable speed for grease lubrication		17000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	23
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	80	N
Static axial stiffness, preload class A		100	N/µm
Preload class B	G_B	160	N
Static axial stiffness, preload class B		129	N/µm
Preload class C	G_C	320	N
Static axial stiffness, preload class C		168	N/µm
Preload class D	G_D	640	N
Static axial stiffness, preload class D		225	N/µm
Calculation factors
Calculation factor	f	1.11
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_2D	1.14
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 ACD/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：2021-06-07
Application:rock drilling machinery,food sterilization,chemical raw materials and reagents,tower crane,Laser Devices,miscellaneous instruments,marine analysis and testing equipment,embroidery cloth,Industrial,inorganic chemical,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving
Similar models:71909 ACD/HCP4A S71909 CE/P4A 71909 CE/P4A 71909 CB/HCP4AL 71909 ACB/P4AL 71909 ACE/HCP4AL 71909 CB/HCP4A S71909 ACB/P4A 71909 CD/P4A 71909 CE/P4AH1
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16680	42.8752	61.9	7.95	Seals
51172 F	360	440	65	Bearings, units and housings
7017 CD/P4AH1	85	130	22	Bearings, units and housings
71917 CD/P4AL	85	120	18	Bearings, units and housings
BTM 130 ATN9/HCP4CDB	130	200	63	Bearings, units and housings
ECW 205	-	-	-	Bearings, units and housings
FSAF 22617 x 2.7/8	73.025	-	-	Bearings, units and housings
FY 1.7/16 TF	36.512	-	-	Bearings, units and housings
NU 208 ECPH	40	80	18	Bearings, units and housings
OKC 360	360		-
SAF 23026 KA x 4.3/8	111.125	-	-	Bearings, units and housings
SNL 524 TURU	110	-	-	Bearings, units and housings

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Hot number： 240/900 ECA/W33 24015-2RS5/VT143 32048 X 55x100x8 CRW1 R 71920 ACB/HCP4A 7212 BECBJ 7338 BCBM 85181 D/W R6-5-2ZS HA 2309 K 80x86x20 NUP 2317 ECP PL 950 PWTR 20.2RS SILJ 16 ES