Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7021 CD/HCP4A

7021 CD/HCP4A

Dimensions

d		105	mm
D		160	mm
B		26	mm
d₁		121.9	mm
d₂		121.9	mm
D₁		143.1	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/HCP4A
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：2025-12-09
Application:rolling machine,Other machinery,food add,textile machinery,hydraulic cylinder buffer,Rolling mill gear box,other CNC,animal,granulator,screen filter,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving
Similar models:7021 CD/P4AH1 S7021 CD/HCP4A 7021 CD/P4AL 7021 ACD/HCP4AL 7021 ACD/P4AH1 7021 CD/HCP4AH1 S7021 ACD/P4A 7021 CD/HCP4A 7021 ACD/HCP4AH1 7021 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 7021CD/HCP4A products，there is large inventory of SKF 7021 CD/HCP4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 7021 CD/HCP4A Which SKF 7021CD/HCP4A 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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293/530 EM	530	800	160	Bearings, units and housings
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50195	127	190.5	12.7	Seals
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6304 ETN9	20	52	15	Bearings, units and housings
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7013 CD/P4AH1	65	100	18	Bearings, units and housings
NNCF 4916 CV	80	110	30	Bearings, units and housings
PCM 222525 M	22	25	25	Bearings, units and housings
RNU 2208 ECP	49.5	80	23	Bearings, units and housings

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