Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71911 ACB/P4AL

71911 ACB/P4AL

Dimensions

d		55	mm
D		80	mm
B		13	mm
d₁		63.94	mm
d₂		62.7	mm
D₂		73.2	mm
b		2	mm
C₁		6.5	mm
C₂		3.8	mm
C₃		1.7	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		26	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		64.8	mm

Calculation data

Basic dynamic load rating	C	12.7	kN
Basic static load rating	C₀	12.7	kN
Fatigue load limit	P_u	0.325	kN
Attainable speed for grease lubrication		20000	r/min
Attainable speed for oil-air lubrication		32000	r/min
Ball diameter	D_w	5.556	mm
Number of balls	z	28
Reference grease quantity	G_ref	2.58	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	55	N
Static axial stiffness, preload class A		88	N/µm
Preload class B	G_B	110	N
Static axial stiffness, preload class B		114	N/µm
Preload class C	G_C	330	N
Static axial stiffness, preload class C		172	N/µm
Calculation factors
Calculation factor	f	1.09
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

0.18

Model Number: 71911 ACB/P4AL
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:mobile toilet,Tool,non-ferrous metal alloy,Medical room equipment,physical instruments,reinforced machinery,labor insurance,ECG,other CNC,test strip,chamfering machine etc
Similar models:71911 ACD/HCP4AL 71911 CE/HCP4A 71911 ACE/P4AH1 71911 ACE/P4AL 71911 CD/HCP4AL S71911 ACE/HCP4A 71911 ACD/HCP4A 71911 CE/P4AL 71911 CD/P4A 71911 CD/P4AL
BEARING POWER International Trading Co.,Ltd. specialize in 71911ACB/P4AL products，there is large inventory of SKF 71911 ACB/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 71911 ACB/P4AL Which SKF 71911ACB/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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SY 50 TR	50	-	-	Bearings, units and housings

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