Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7221 ACD/P4A

7221 ACD/P4A

Dimensions

d		105	mm
D		190	mm
B		36	mm
d₁		131.2	mm
d₂		131.2	mm
D₁		163.8	mm
r_1,2	min.	2.1	mm
r_3,4	min.	1.1	mm
a		52.6	mm

Abutment dimensions

d_a	min.	117	mm
d_b	min.	117	mm
D_a	max.	178	mm
D_b	max.	183	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		138.4	mm

Calculation data

Basic dynamic load rating	C	163	kN
Basic static load rating	C₀	146	kN
Fatigue load limit	P_u	5.1	kN
Attainable speed for grease lubrication		6700	r/min
Attainable speed for oil-air lubrication		10000	r/min
Ball diameter	D_w	26.988	mm
Number of balls	z	15
Reference grease quantity	G_ref	48.333	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	1000	N
Static axial stiffness, preload class A		308	N/µm
Preload class B	G_B	2000	N
Static axial stiffness, preload class B		399	N/µm
Preload class C	G_C	4000	N
Static axial stiffness, preload class C		527	N/µm
Preload class D	G_D	8000	N
Static axial stiffness, preload class D		708	N/µm
Calculation factors
Calculation factor	f	1.08
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.01
Calculation factor	f_2C	1.02
Calculation factor	f_2D	1.05
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

3.87

Model Number: 7221 ACD/P4A
Inner Diameter：105mm Outer Diameter：190mm Width：36mm
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：2021-06-04
Application:hydraulic pressure gauge,Insect Capture,Antenna Industry,vertical pull,respirator,medical equipment,equipment and,Individual Wire,wheel lathe,extruder,baler
Similar models:7221 ACD/HCP4A 72212/72487 7221 ACD/P4A 7221 BECBM 7221 BEP 7221 CD/P4A 7221 BECBP
BEARING POWER International Trading Co.,Ltd. specialize in 7221ACD/P4A products，there is large inventory of SKF 7221 ACD/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 7221 ACD/P4A Which SKF 7221ACD/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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
BD-22320 EK-H 2320	90	215	73	Bearings, units and housings
232/800 CAKF/W33	800	1420	488	Bearings, units and housings
35x50x8 CRW1 V	35	50	8	Seals
36005	91.9988	110.0074	9.4996	Seals
87271	-	-	53.98	Seals
87525	-	-	32	Seals
D/W R155 R	3.967	7.938	2.779	Bearings, units and housings
FYAWK 1.1/4 LTA	31.75	-	-	Bearings, units and housings
KR 62 PPA	-	62	29	Bearings, units and housings
NUP 1880 MP	400	500	46	Bearings, units and housings
OKCX 890	890		-
S71917 CB/P4A	85	120	18	Bearings, units and housings

Purchase the SKF 7221 ACD/P4A Please fill in the following

Hot number： 22328 240/1060 CAF/W33 25x38x7 CRW1 V 29480 EM 310-2Z 45x65x8 CRW1 V 52220 GRA 3021 FSAF 22520 TLC HA 3126 L HK 1416.2RS NK 105/26 NU 2207 ECJ NUP 2226 ECML SAF 22634 x 6