Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7028 CD/HCP4A

7028 CD/HCP4A

Dimensions

d		140	mm
D		210	mm
B		33	mm
d₁		161.6	mm
d₂		161.6	mm
D₁		188.4	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		40.1	mm

Abutment dimensions

d_a	min.	149	mm
d_b	min.	149	mm
D_a	max.	201	mm
D_b	max.	205	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		166.3	mm

Calculation data

Basic dynamic load rating	C	153	kN
Basic static load rating	C₀	166	kN
Fatigue load limit	P_u	5.3	kN
Attainable speed for grease lubrication		7500	r/min
Attainable speed for oil-air lubrication		12000	r/min
Ball diameter	D_w	22.225	mm
Number of balls	z	22
Reference grease quantity	G_ref	45	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	570	N
Static axial stiffness, preload class A		168	N/µm
Preload class B	G_B	1140	N
Static axial stiffness, preload class B		228	N/µm
Preload class C	G_C	2280	N
Static axial stiffness, preload class C		320	N/µm
Preload class D	G_D	4560	N
Static axial stiffness, preload class D		464	N/µm
Calculation factors
Calculation factor	f	1.16
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	15.8

Mass

Mass bearing

2.83

Model Number: 7028 CD/HCP4A
Inner Diameter：140mm Outer Diameter：210mm Width：33mm
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：2026-04-17
Application:small appliances,Medical room equipment,bathroom facilities,plastic molding,car shock absorber,Tool,sawing machine,Wire grinder,Roller mill,food sterilization,training beds etc
Similar models:7028 ACD/HCP4AL 7028 ACD/P4AH1 7028 CD/P4AL 7028 ACD/HCP4A 7028 CD/HCP4A 7028 CD/P4AH1 7028 CD/P4A 7028 BGM S7028 ACD/HCP4A 7028 CD/HCP4AH1
BEARING POWER International Trading Co.,Ltd. specialize in 7028CD/HCP4A products，there is large inventory of SKF 7028 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 7028 CD/HCP4A Which SKF 7028CD/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： 23264 CC/W33 BD-23948 CCK/W33-OH 3948 H BD-24068 CCK30/W33-AOH 24068 38649 6030-RS1 61819-2RS1 91396 BD-C 2244 K-AOH 2244 FY 25 LF MB 11 A HME 31/600 HN 1210 K 15x20x13 NU 406 QJ 215 N2MA