Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71920 CB/P4A

71920 CB/P4A

Dimensions

d		100	mm
D		140	mm
B		20	mm
d₁		114.92	mm
d₂		113.16	mm
D₂		128.7	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		28.9	mm

Abutment dimensions

d_a	min.	106	mm
d_b	min.	106	mm
D_a	max.	134	mm
D_b	max.	136.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm
d_n		116.1	mm

Calculation data

Basic dynamic load rating	C	29.1	kN
Basic static load rating	C₀	36	kN
Fatigue load limit	P_u	0.865	kN
Attainable speed for grease lubrication		12000	r/min
Attainable speed for oil-air lubrication		19000	r/min
Ball diameter	D_w	7.938	mm
Number of balls	z	37
Reference grease quantity	G_ref	9.96	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	72	N
Static axial stiffness, preload class A		60	N/µm
Preload class B	G_B	145	N
Static axial stiffness, preload class B		79	N/µm
Preload class C	G_C	430	N
Static axial stiffness, preload class C		125	N/µm
Calculation factors
Calculation factor	f	1.11
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.07
Calculation factor	f_HC	1
Calculation factor	f₀	10

Mass

Mass bearing

0.85

Model Number: 71920 CB/P4A
Inner Diameter：100mm Outer Diameter：140mm Width：20mm
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:instrumentation instrument,Spectrum Products,Dental Drill etc,industrial supplies,Antenna Industry,medical treatment,circulating pump,Spectrum Products,Roller,drawing die,Anti-defibrillation pacing
Similar models:S71920 ACD/HCP4A 71920 CE/HCP4A S71920 ACE/HCP4A 71920 CD/P4A 71920 ACD/HCP4A S71920 CD/P4A PCM 171920 E S71920 ACB/P4A 71920 ACB/P4AL 71920 ACE/HCP4A
BEARING POWER International Trading Co.,Ltd. specialize in 71920CB/P4A products，there is large inventory of SKF 71920 CB/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 71920 CB/P4A Which SKF 71920CB/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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7317 BEGAM	85	180	41	Bearings, units and housings
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NNU 4924 B/SPW33	120	165	45	Bearings, units and housings
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Hot number： 22317 E 306493 AA 3214 A-2Z 331271 403703 40x62x10 HMS5 RG 6218-Z 6317/C3VL0241 65021 89324 M FY 509 M KMT 20 OKC 450 SY 45 WF W 61910-2RZ