Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71909 ACE/P4AL

71909 ACE/P4AL

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.7	mm
d₂		51	mm
D₁		60.3	mm
b		2	mm
C₁		5.9	mm
C₂		2.3	mm
C₃		1.8	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_b	min.	47	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	9.75	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
Attainable speed for oil-air lubrication		39000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	21
Reference grease quantity	G_ref	1.5	cm³
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: 71909 ACE/P4AL
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：2025-12-09
Application:electric pump,machine tool spindle,Machine tool accessories,Hairbrush device,reducer,engineering machine,Medical printer,flexible processing,insect experimental analysis instrument,Spectrum Products,lifting chain
Similar models:S71909 CD/HCP4A S71909 CB/HCP4A 71909 CD/P4A S71909 CE/P4A 71909 ACE/P4AH1 71909 CD/HCP4A 71909 CE/P4A 71909 CB/HCP4AL 71909 ACE/HCP4AH1 71909 ACE/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71909ACE/P4AL products，there is large inventory of SKF 71909 ACE/P4AL 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 ACE/P4AL Which SKF 71909ACE/P4AL 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.

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19884	50.8	73.03	7.95	Seals
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38691	98.425	126.97	9.53	Seals
5 VA V	4	-	-	Seals
51409	45	100	39	Bearings, units and housings
52320	85	170	97	Bearings, units and housings
53208 + U 208	40	68	20.3	Bearings, units and housings
7009 ACD/P4A	45	75	16	Bearings, units and housings
7311 BEP	55	120	29	Bearings, units and housings
D/W R8-2Z	12.7	28.575	7.938	Bearings, units and housings
W 6304-2RZ	20	52	15	Bearings, units and housings

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Hot number： 11368 12x22x6 HMSA10 V 231/750 CA/W33 32048 X/DF 412603 617479 B 7211 BECBY 7212 CD/HCP4A FNL 520 B K 30x34x13 KMTA 16 NU 408 M PWM 9010580 SYFJ 45 TF T4DB 160