Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71911 ACB/HCP4A

71911 ACB/HCP4A

Dimensions

d		55	mm
D		80	mm
B		13	mm
d₁		63.94	mm
d₂		62.7	mm
D₂		73.2	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		24000	r/min
Attainable speed for oil-air lubrication		38000	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		98	N/µm
Preload class B	G_B	110	N
Static axial stiffness, preload class B		126	N/µm
Preload class C	G_C	330	N
Static axial stiffness, preload class C		192	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	1.08
Calculation factor	f_HC	1.01
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

0.17

Model Number: 71911 ACB/HCP4A
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：2026-04-17
Application:journal lathe,flow control valve,Vacuum generator,X-ray Equipment,Insect Count,Material handling equipment,casting embedding,Industrial Electromechanical,Industrial,hanging clamp,marine analysis
Similar models:71911 ACE/P4AH1 71911 CE/P4A 71911 CD/P4A 71911 ACE/P4A 71911 CE/P4AH1 S71911 ACD/HCP4A 71911 CD/HCP4A S71911 CE/HCP4A 71911 ACD/HCP4AL 71911 ACE/P4AL
BEARING POWER International Trading Co.,Ltd. specialize in 71911ACB/HCP4A products，there is large inventory of SKF 71911 ACB/HCP4A 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/HCP4A Which SKF 71911ACB/HCP4A 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
120x140x13 HMS5 V	120	140	13	Seals
400301	27	-	-	Seals
470921	880	-	-	Seals
511/750 M	750	900	120	Bearings, units and housings
86903	-	-	63.5	Seals
FSAF 22616 T	68.2625	-	-	Bearings, units and housings
AS 6590	65	90	1	Bearings, units and housings
N 076	48.6664	-	379.9078	Bearings, units and housings
W 6203-2RZ	17	40	12	Bearings, units and housings
W 6207-2Z	35	72	17	Bearings, units and housings
W 634-2RZ	4	16	5	Bearings, units and housings
YSA 213-2FK + HA 2313	65	120	65	Bearings, units and housings

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Hot number： 28x42x7 HMS5 V 313705 B 61880 MA 71900 ACE/HCP4A 80x140x12 CRW1 R FYR 3 15/16-3 GE 50 TXG3E-2LS NKX 45 OH 3980 HE OKTC 445 S71915 ACD/P4A SYNT 70 LW W 61701-2ZS WS 81104 YET 206-102