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：2026-04-16
Application:economic mold,Flame Cutting,electric hydraulic lifting platform,standing experimental equipment,Spectral Products,municipal machinery,water,Machine tool accessories,sucker industry,linear drive,mathematical instruments
Similar models:7021 CD/HCP4A 7021 CD/P4AL 7021 ACD/P4AH1 S7021 ACD/HCP4A 7021 CD/HCP4AL S7021 CD/P4A 7021 CD/P4AH1 7021 CD/P4A S7021 ACD/P4A 7021 CD/HCP4AH1
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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Hot number： 12x24x6 HMSA7P2 R 51218 52216 6212 N 6213-RS1 71936 ACD/HCP4AH1 AOH 240/630 G FY 1.11/16 FM FYTJ 1. TF FYWK 510 L NCF 3020 CV NUP 29/530 ECMA PSMF 182512 A51 SYWR 30 YTHR SNP 3260x11