Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71902 ACD/P4A

71902 ACD/P4A

Dimensions

d		15	mm
D		28	mm
B		7	mm
d₁		18.9	mm
d₂		18.9	mm
D₁		23.7	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		8.5	mm

Abutment dimensions

d_a	min.	17	mm
d_b	min.	17	mm
D_a	max.	26	mm
D_b	max.	26.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		20.1	mm

Calculation data

Basic dynamic load rating	C	3.77	kN
Basic static load rating	C₀	1.8	kN
Fatigue load limit	P_u	0.078	kN
Attainable speed for grease lubrication		50000	r/min
Attainable speed for oil-air lubrication		75000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	13
Reference grease quantity	G_ref	0.21	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	25	N
Static axial stiffness, preload class A		40	N/µm
Preload class B	G_B	50	N
Static axial stiffness, preload class B		51	N/µm
Preload class C	G_C	100	N
Static axial stiffness, preload class C		67	N/µm
Preload class D	G_D	200	N
Static axial stiffness, preload class D		88	N/µm
Calculation factors
Calculation factor	f	1.05
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

0.015

Model Number: 71902 ACD/P4A
Inner Diameter：15mm Outer Diameter：28mm Width：7mm
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:Safety protection,Cutting Machine,cleaners,large agricultural machinery,raw material accessories,engine,Workpiece,Surveying Surveying Instruments,crimping tools,Rolling mill gear box,Machine tool accessories
Similar models:S71902 CD/P4A 71902 CE/HCP4A 71902 CD/P4A 71902 CE/P4A 71902 CE/P4AH 71902 ACE/HCP4AH 71902 CD/HCP4A S71902 ACD/HCP4A 71902 ACD/P4A 71902 CE/HCP4AH
BEARING POWER International Trading Co.,Ltd. specialize in 71902ACD/P4A products，there is large inventory of SKF 71902 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 71902 ACD/P4A Which SKF 71902ACD/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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NJ 2308 ECPH	40	90	33	Bearings, units and housings
SAF 22314 TLC	70	-	-	Bearings, units and housings
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