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

S71909 CB/P4A

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		53.45	mm
d₂		52.4	mm
D₂		61.8	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		16.1	mm

Abutment dimensions

d_a	min.	48.2	mm
d_a	max.	52.9	mm
d_b	min.	48.2	mm
d_b	max.	51.8	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	9.95	kN
Basic static load rating	C₀	9.65	kN
Fatigue load limit	P_u	0.245	kN
Attainable speed for grease lubrication		28000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	27
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	24	N
Static axial stiffness, preload class A		28	N/µm
Preload class B	G_B	48	N
Static axial stiffness, preload class B		37	N/µm
Preload class C	G_C	145	N
Static axial stiffness, preload class C		60	N/µm
Calculation factors
Calculation factor	f	1.08
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.07
Calculation factor	f_HC	1
Calculation factor	f₀	9.7

Mass

Mass bearing

0.14

Model Number: S71909 CB/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:experimental equipment,generator,Gear grinding machine,universal category,industrial supplies,car steering pin,pump accessories,non-ferrous metal alloy,marine test,steam Hydraulic control element,chemical raw materials and reagents
Similar models:71909 CE/P4A S71909 CD/HCP4A 71909 ACE/P4A 71909 CD/HCP4A 71909 CE/HCP4AH1 71909 ACB/P4AL S71909 CB/P4A S71909 ACB/P4A 71909 ACE/P4AL S71909 CE/P4A
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Model No. Inner Diameter Outer Diameter Width Type

1600 VL V
C 2317
GEP 460 FS
IR 10X14X12 IS1
NJ 2320 ECML

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Hot number： 20749 22205 EK 3210 A 44x60x10 HMS5 V 525582 GEZM 500 ESX-2LS K 73x79x20 NATV 6 NK 35/30 TN OKBS 92 PFT 12 TF S71918 ACD/P4A SAF 22620 x 3.5/16 T W 61703-2Z W 61804-2RZ

Model No.	Inner Diameter	Outer Diameter	Width	Type
1600 VL V
C 2317
GEP 460 FS
IR 10X14X12 IS1
NJ 2320 ECML