Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71906 ACD/P4A

71906 ACD/P4A

Dimensions

d		30	mm
D		47	mm
B		9	mm
d₁		35.6	mm
d₂		35.6	mm
D₁		41.4	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		13.6	mm

Abutment dimensions

d_a	min.	32	mm
d_b	min.	32	mm
D_a	max.	45	mm
D_b	max.	45.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		36.8	mm

Calculation data

Basic dynamic load rating	C	6.76	kN
Basic static load rating	C₀	4.3	kN
Fatigue load limit	P_u	0.183	kN
Attainable speed for grease lubrication		26000	r/min
Attainable speed for oil-air lubrication		40000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	20
Reference grease quantity	G_ref	0.63	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	40	N
Static axial stiffness, preload class A		65	N/µm
Preload class B	G_B	80	N
Static axial stiffness, preload class B		83	N/µm
Preload class C	G_C	160	N
Static axial stiffness, preload class C		109	N/µm
Preload class D	G_D	320	N
Static axial stiffness, preload class D		145	N/µm
Calculation factors
Calculation factor	f	1.08
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

0.048

Model Number: 71906 ACD/P4A
Inner Diameter：30mm Outer Diameter：47mm Width：9mm
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:Machine Tool Accessories,Laser Devices,marine analysis and testing equipment,Medical equipment,Digital Generator,decoration machinery,ventilation equipment,Machine Tool Accessories,woodworking machinery,squeeze machine etc,hydraulic pressure gauge
Similar models:71906 ACB/P4A 71906 CE/P4AL 71906 ACE/P4A 71906 ACE/P4AL S71906 CE/HCP4A S71906 CB/HCP4A S71906 ACE/HCP4A S71906 ACB/HCP4A S71906 ACB/P4A S71906 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71906ACD/P4A products，there is large inventory of SKF 71906 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 71906 ACD/P4A Which SKF 71906ACD/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.

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SY 2.1/4 TF	57.15	-	-	Bearings, units and housings
SYJ 45 TF	45	-	-	Bearings, units and housings

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