Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71820 CD/P4

71820 CD/P4

Dimensions

d		100	mm
D		125	mm
B		13	mm
d₁		108.2	mm
d₂		108.2	mm
D₁		117	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		21.6	mm

Abutment dimensions

d_a	min.	104.6	mm
d_b	min.	104.6	mm
D_a	max.	120.4	mm
D_b	max.	123	mm
r_a	max.	1	mm
r_b	max.	0.3	mm
d_n		109.1	mm

Calculation data

Basic dynamic load rating	C	22.5	kN
Basic static load rating	C₀	29	kN
Fatigue load limit	P_u	1.16	kN
Attainable speed for grease lubrication		9000	r/min
Attainable speed for oil-air lubrication		14000	r/min
Ball diameter	D_w	7.144	mm
Number of balls	z	34
Reference grease quantity	G_ref	3.2	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	120	N
Static axial stiffness, preload class A		90	N/µm
Preload class B	G_B	360	N
Static axial stiffness, preload class B		156	N/µm
Preload class C	G_C	720	N
Static axial stiffness, preload class C		231	N/µm
Calculation factors
Calculation factor	f	1.4
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.09
Calculation factor	f_2C	1.16
Calculation factor	f_HC	1
Calculation factor	f₀	17.4

Mass

Mass bearing

0.31

Model Number: 71820 CD/P4
Inner Diameter：100mm Outer Diameter：125mm 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：2026-04-16
Application:oral medical device,Broadcasting System,power protection,Pest Monitoring,extruder,wheel lathe,Medium and large motor,root canal filling,embroidery cloth,building decoration raw materials and accessories,Infrared Technology
Similar models:71820 ACD/HCP4 71820 ACD/P4 71820 CD/P4 71820 CD/HCP4
BEARING POWER International Trading Co.,Ltd. specialize in 71820CD/P4 products，there is large inventory of SKF 71820 CD/P4 Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71820 CD/P4 Which SKF 71820CD/P4 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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