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

71921 ACD/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		39.3	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	57.2	kN
Basic static load rating	C₀	65.5	kN
Fatigue load limit	P_u	2.5	kN
Attainable speed for grease lubrication		7500	r/min
Attainable speed for oil-air lubrication		12000	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	360	N
Static axial stiffness, preload class A		263	N/µm
Preload class B	G_B	720	N
Static axial stiffness, preload class B		346	N/µm
Preload class C	G_C	1440	N
Static axial stiffness, preload class C		463	N/µm
Preload class D	G_D	2880	N
Static axial stiffness, preload class D		633	N/µm
Calculation factors
Calculation factor	f	1.25
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

0.82

Model Number: 71921 ACD/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：2021-06-05
Application:vacuum filter,test equipment,ship special,storage shelves,E Beauty,Traffic Fire Protection Equipment Security equipment,product accessories,electrocardiograph,Performance test,altimeter etc,gas turbine
Similar models:S71921 ACD/P4A 71921 CD/HCP4A S71921 CD/P4A 71921 ACD/HCP4AH1 71921 ACD/P4AL 71921 ACD/HCP4AL 71921 CD/P4AL 71921 ACD/P4AH1 S71921 CD/HCP4A 71921 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71921ACD/P4AL products，there is large inventory of SKF 71921 ACD/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 ACD/P4AL Which SKF 71921ACD/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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
160 VL V	144	-	-	Seals
32924	120	165	29	Bearings, units and housings
524214	638.175	-	-	Seals
53217 + U 217	85	125	33.1	Bearings, units and housings
55x80x8 HMSA10 RG	55	80	8	Seals
HCCE 060 R	100	457	-	Coupling systems
NU 1012 ECP	60	95	18	Bearings, units and housings
NU 336 ECM	180	380	75	Bearings, units and housings
PL 750	-	-	55.5752	Bearings, units and housings
SYF 20 FM	20	-	-	Bearings, units and housings
W 60/1.5 R	1.5	6	2.5	Bearings, units and housings
XHCE 040/OK 120	120	318	-	Coupling systems

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Hot number： 23022 CCK/W33 32502 400054 6001/HR11TN 6012 N 708/600 AMB 71220 71908 ACE/P4AH1 71909 CB/HCP4A 91385 AHX 2324 G BEAM 012055-2RS K 39x44x26 ZW PF 35 TR S7200 ACD/P4A