Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71921 CD/P4AL

71921 CD/P4AL

Dimensions

d		105	mm
D		145	mm
B		20	mm
d₁		117.3	mm
d₂		117.3	mm
D₁		132.7	mm
b		2.3	mm
C₁		10.9	mm
C₂		3.9	mm
C₃		3.2	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		26.8	mm

Abutment dimensions

d_a	min.	111	mm
d_b	min.	111	mm
D_a	max.	139	mm
D_b	max.	141	mm
r_a	max.	1	mm
r_b	max.	0.6	mm
d_n		120.6	mm

Calculation data

Basic dynamic load rating	C	61.8	kN
Basic static load rating	C₀	69.5	kN
Fatigue load limit	P_u	2.6	kN
Attainable speed for grease lubrication		8500	r/min
Attainable speed for oil-air lubrication		14000	r/min
Ball diameter	D_w	12.7	mm
Number of balls	z	27
Reference grease quantity	G_ref	11.1	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	230	N
Static axial stiffness, preload class A		110	N/µm
Preload class B	G_B	460	N
Static axial stiffness, preload class B		151	N/µm
Preload class C	G_C	920	N
Static axial stiffness, preload class C		215	N/µm
Preload class D	G_D	1840	N
Static axial stiffness, preload class D		316	N/µm
Calculation factors
Calculation factor	f	1.25
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	16.4

Mass

Mass bearing

0.82

Model Number: 71921 CD/P4AL
Inner Diameter：105mm Outer Diameter：145mm 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：2024-12-25
Application:wall industry,engineering machinery,packaging materials,Industrial Adhesive,Handling machinery and various industrial machinery,Embroidery,power protection,directional control valve,Gear grinding machine,Anti-defibrillation pacing,SPA equipment
Similar models:71921 CD/P4AH1 71921 CD/HCP4A 71921 ACD/P4A 71921 CD/P4A S71921 ACD/HCP4A 71921 CD/HCP4AL S71921 ACD/P4A S71921 CD/P4A 71921 ACD/HCP4AL 71921 ACD/P4AH1
BEARING POWER International Trading Co.,Ltd. specialize in 71921CD/P4AL products，there is large inventory of SKF 71921 CD/P4AL Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71921 CD/P4AL Which SKF 71921CD/P4AL 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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NAO 35x55x20	35	55	20	Bearings, units and housings
NJ 318 ECML	90	190	43	Bearings, units and housings
NKX 10 ZTN	10	19	23	Bearings, units and housings
NU 207 ECM	35	72	17	Bearings, units and housings
SYR 3 1/2-3	88.9	-	-	Bearings, units and housings

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