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：2026-04-16
Application:sheet industry,Insect Count,motorcycle,Vacuum generator,lifting upgrade,Water Monitoring,garbage disposal,Machine Tool Accessories,injection molding machine,transportation equipment,food testing
Similar models:71911 ACB/HCP4A S71911 ACB/P4A 71911 ACB/P4AL 71911 ACD/HCP4A S71911 CB/HCP4A S71911 CD/P4A S71911 ACB/HCP4A S71911 ACD/P4A 71911 CD/HCP4A 71911 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
10049	25.4	46.43	6.35	Seals
31185	79.375	104.78	11.13	Seals
47378	120.65	136.53	7.95	Seals
630x670x20 HDS1 R	630	670	20	Seals
707 CE/HCP4AH	7	19	6	Bearings, units and housings
99482	128	135.255	34.2646	Seals
GEP 260 FS	260	370	175	Bearings, units and housings
PBM 182516 M1G1	18	25	16	Bearings, units and housings
PCZ 1414 M	22.225	25.4	22.225	Bearings, units and housings
SSAFS 23034 KAT x 5.7/8	149.225	-	-	Bearings, units and housings
YARAG 205	25	52	34.1	Bearings, units and housings
WS 81152	260		13.5	Bearings, units and housings

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Hot number： 18513 212-2Z 239/800 CA/W33 24148 CC/W33 24916 316848 A 33220 71901 CD/P4A 71919 ACD/P4A C 4128 V/VE240 FYTBK 506 NNU 4960 B/SPW33 NUKRE 47 A SAF 1618 TLC SYR 2 3/4 N-118