Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71911 ACD/P4A

71911 ACD/P4A

Dimensions

d		55	mm
D		80	mm
B		13	mm
d₁		62.7	mm
d₂		62.7	mm
D₁		72.3	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		22.4	mm

Abutment dimensions

d_a	min.	59.6	mm
d_b	min.	59.6	mm
D_a	max.	75.4	mm
D_b	max.	78	mm
r_a	max.	1	mm
r_b	max.	0.3	mm
d_n		64.7	mm

Calculation data

Basic dynamic load rating	C	18.2	kN
Basic static load rating	C₀	13.7	kN
Fatigue load limit	P_u	0.585	kN
Attainable speed for grease lubrication		15000	r/min
Attainable speed for oil-air lubrication		24000	r/min
Ball diameter	D_w	7.938	mm
Number of balls	z	23
Reference grease quantity	G_ref	2.49	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	120	N
Static axial stiffness, preload class A		124	N/µm
Preload class B	G_B	240	N
Static axial stiffness, preload class B		161	N/µm
Preload class C	G_C	480	N
Static axial stiffness, preload class C		211	N/µm
Preload class D	G_D	960	N
Static axial stiffness, preload class D		282	N/µm
Calculation factors
Calculation factor	f	1.15
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

0.18

Model Number: 71911 ACD/P4A
Inner Diameter：55mm Outer Diameter：80mm Width：13mm
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:Beauty and Body,orthodontic material,Machine tool accessories,Security Equipment,Seals,Medical printer,non-ferrous metal alloy,metering pump,electronic components,packaging machinery,air purification
Similar models:71911 ACE/HCP4A 71911 CD/P4AL 71911 CE/P4A S71911 ACD/P4A 71911 CB/P4A 71911 CE/HCP4AL S71911 CE/P4A S71911 ACB/P4A 71911 CD/P4A S71911 CB/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71911ACD/P4A products，there is large inventory of SKF 71911 ACD/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 71911 ACD/P4A Which SKF 71911ACD/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
10127	25.4	50.8	6.35	Seals
16079	41.275	60.3	12.7	Seals
312-Z	60	130	31	Bearings, units and housings
400251	22	-	-	Seals
400605	54	-	-	Seals
7202 CD/HCP4A	15	35	11	Bearings, units and housings
86721	-	-	63.5	Seals
99605	154.0002	161.925	29.9974	Seals
HE 3136	165.1	230	131	Bearings, units and housings
NUP 2316 ECML	80	170	58	Bearings, units and housings
PCM 455030 M	45	50	30	Bearings, units and housings
PWM 758590	75	85	90	Bearings, units and housings

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