Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7021 CD/HCP4AL

7021 CD/HCP4AL

Dimensions

d		105	mm
D		160	mm
B		26	mm
d₁		121.9	mm
d₂		121.9	mm
D₁		143.1	mm
b		2.4	mm
C₁		14.1	mm
C₂		6.2	mm
C₃		5	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		30.8	mm

Abutment dimensions

d_a	min.	114	mm
d_b	min.	114	mm
D_a	max.	151	mm
D_b	max.	155	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		125.6	mm

Calculation data

Basic dynamic load rating	C	95.6	kN
Basic static load rating	C₀	96.5	kN
Fatigue load limit	P_u	3.6	kN
Attainable speed for grease lubrication		10000	r/min
Attainable speed for oil-air lubrication		15000	r/min
Ball diameter	D_w	17.462	mm
Number of balls	z	21
Reference grease quantity	G_ref	20.4	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	360	N
Static axial stiffness, preload class A		129	N/µm
Preload class B	G_B	720	N
Static axial stiffness, preload class B		176	N/µm
Preload class C	G_C	1440	N
Static axial stiffness, preload class C		248	N/µm
Preload class D	G_D	2880	N
Static axial stiffness, preload class D		359	N/µm
Calculation factors
Calculation factor	f	1.15
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.05
Calculation factor	f_2D	1.09
Calculation factor	f_HC	1.02
Calculation factor	f₀	15.7

Mass

Mass bearing

1.32

Model Number: 7021 CD/HCP4AL
Inner Diameter：105mm Outer Diameter：160mm Width：26mm
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：2024-12-13
Application:car steering pin,mechanical annex,flow control valve,Industrial Adhesive,car,wall industry,plastic blow molding,noise inspection,sanitation facilities,Reflective Materials Industrial fabrics,plastic molding
Similar models:S7021 ACD/P4A 7021 CD/P4AH1 7021 ACD/P4AH1 S7021 CD/HCP4A 7021 ACD/HCP4AH1 7021 CD/P4A 7021 CD/HCP4A 7021 ACD/HCP4AL 7021 ACD/P4A 7021 ACD/HCP4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
3306 A	30	72	30.2	Bearings, units and housings
470491	478	-	-	Seals
522679	444.5	-	-	Seals
5543	14.3002	25.37	6.35	Seals
55x80x10 HMSA10 RG	55	80	10	Seals
5950	15.0876	31.75	7.95	Seals
9850	25.4	38	9.91	Seals
99595	150	159.004	29.9974	Seals
IR 80x90x30	80	90	30	Bearings, units and housings
K 22x32x24	22	32	24	Bearings, units and housings
KD21-103	16	100	-	Coupling systems
NJ 313 ECML	65	140	33	Bearings, units and housings

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