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

71902 CD/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		6.4	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	3.97	kN
Basic static load rating	C₀	1.9	kN
Fatigue load limit	P_u	0.08	kN
Attainable speed for grease lubrication		56000	r/min
Attainable speed for oil-air lubrication		85000	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	15	N
Static axial stiffness, preload class A		16	N/µm
Preload class B	G_B	30	N
Static axial stiffness, preload class B		21	N/µm
Preload class C	G_C	60	N
Static axial stiffness, preload class C		29	N/µm
Preload class D	G_D	120	N
Static axial stiffness, preload class D		41	N/µm
Calculation factors
Calculation factor	f	1.05
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	9.6

Mass

Mass bearing

0.015

Model Number: 71902 CD/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:ultra-quiet generators,sawing machine,medical equipment,Power equipment,boring bar boring bar,Low-voltage electrical equipment,organic raw materials,flow control valve,Switch,chemical,thin metal materials
Similar models:71902 ACE/P4A 71902 CD/P4A 71902 CE/P4A 71902 ACE/HCP4AH 71902 ACE/P4AH S71902 CD/P4A 71902 ACD/HCP4A S71902 ACD/P4A 71902 CE/HCP4A 71902 ACD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71902CD/P4A products，there is large inventory of SKF 71902 CD/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 CD/P4A Which SKF 71902CD/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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