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：2026-08-20
Application:chamfer,metering pump,Die,Equipment,Laser Devices,disposable,Warehouse Shelf Equipment,woodworking machinery,suction nozzle,Doppler,vertical pull
Similar models:S71909 ACB/HCP4A 71909 CE/P4AH1 S71909 CB/HCP4A 71909 ACB/P4A 71909 ACD/P4A 71909 ACE/HCP4AL S71909 ACE/P4A 71909 CE/HCP4AH1 71909 CB/P4AL 71909 CD/HCP4A
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Model No. Inner Diameter Outer Diameter Width Type

16x35x7 HMSA10 V
307352
61815-2RZ
NA 4856
SY 1.15/16 TF/VA228

Purchase the SKF S71909 ACD/P4A Please fill in the following

Hot number： 140x180x12 HMSA10 V 22354 51204 V/HR11T1 53.0x69.3x14.2 TPM 840 VRME R BC2B 320996 BT4B 334016 AG/HA1VA901 GEZ 400 ESL-2LS KMFE 5 LS 120155 NUH 2230 ECMH NCF 2938 CV RLS 16 SAF 1613 x 2.1/4 SAW 23536 x 6.1/2 TLC

Model No.	Inner Diameter	Outer Diameter	Width	Type
16x35x7 HMSA10 V
307352
61815-2RZ
NA 4856
SY 1.15/16 TF/VA228