Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71909 ACB/P4A

71909 ACB/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		22.1	mm

Abutment dimensions

d_a	min.	48.2	mm
d_b	min.	48.2	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	9.56	kN
Basic static load rating	C₀	9	kN
Fatigue load limit	P_u	0.232	kN
Attainable speed for grease lubrication		24000	r/min
Attainable speed for oil-air lubrication		38000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	27
Reference grease quantity	G_ref	1.75	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	41	N
Static axial stiffness, preload class A		74	N/µm
Preload class B	G_B	82	N
Static axial stiffness, preload class B		95	N/µm
Preload class C	G_C	245	N
Static axial stiffness, preload class C		143	N/µm
Calculation factors
Calculation factor	f	1.08
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
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: 71909 ACB/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：2026-04-16
Application:bag machine,reducer,Anti-defibrillation pacing,decoration machinery,orthodontic material,mechanical and electrical,pneumatic,gear grinding machine,Machine tool accessories,supporting facilities,paper processing machine
Similar models:S71909 CE/P4A 71909 CD/HCP4A 71909 ACB/P4A S71909 ACE/P4A S71909 ACB/HCP4A 71909 CB/P4AL 71909 CE/HCP4AH1 S71909 CB/HCP4A 71909 ACD/HCP4A 71909 ACB/P4AL
BEARING POWER International Trading Co.,Ltd. specialize in 71909ACB/P4A products，there is large inventory of SKF 71909 ACB/P4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71909 ACB/P4A Which SKF 71909ACB/P4A is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

Model No.	Inner Diameter	Outer Diameter	Width	Type
1375553	349.25	400.05	20.65	Seals
23641	60.325	76.2	9.53	Seals
24932	63.5	85.09	11.13	Seals
50185	127	177.8	12.7	Seals
6008-2RZ	40	68	15	Bearings, units and housings
75x105x10 CRW1 R	75	105	10	Seals
FSAF 1215	75	-	-	Bearings, units and housings
FSAF 1516 x 2.5/8	66.675	-	-	Bearings, units and housings
FYTJ 25 KF	20	-	-	Bearings, units and housings
KR 52 B	-	52	24	Bearings, units and housings
SAF 22624 T	106.3625	-	-	Bearings, units and housings
RSTO 25	30	52	15.8	Bearings, units and housings

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