Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7028 CD/P4A

7028 CD/P4A

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		6700	r/min
Attainable speed for oil-air lubrication		10000	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		151	N/µm
Preload class B	G_B	1140	N
Static axial stiffness, preload class B		206	N/µm
Preload class C	G_C	2280	N
Static axial stiffness, preload class C		289	N/µm
Preload class D	G_D	4560	N
Static axial stiffness, preload class D		418	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
Calculation factor	f₀	15.8

Mass

Mass bearing

3.42

Model Number: 7028 CD/P4A
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：2024-12-12
Application:electronic components,Optical Instruments,luminescent reagent,roller lathe,mechanical annex,shoe-making machinery,supporting facilities,medical equipment,Tool,Antenna Potentials,Infrared Technology
Similar models:S7028 CD/HCP4A 7028 CD/HCP4AL 7028 CD/HCP4A 7028 CD/P4AL 7028 ACD/HCP4AL 7028 CD/HCP4AH1 S7028 ACD/P4A 7028 ACD/P4AL 7028 ACD/HCP4A 7028 CD/P4AH1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
17x28x7 CRW1 V	17	28	7	Seals
18x30x6 HMSA7P2 R	18	30	6	Seals
206	30	62	16	Bearings, units and housings
2212 E-2RS1TN9	60	110	28	Bearings, units and housings
47474	120.65	152.43	12.7	Seals
7007 CB/P4A	35	62	14	Bearings, units and housings
7008 ACD/HCP4A	40	68	15	Bearings, units and housings
7018 ACD/P4AH1	90	140	24	Bearings, units and housings
NKI 85/36	85	115	36	Bearings, units and housings
OH 39/1000 H	950	1140	358	Bearings, units and housings
SAF 22522 x 3.13/16 T	96.8375	-	-	Bearings, units and housings
SNP 3272x13.7/16	341.3125	419.227	290.2458	Bearings, units and housings

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Hot number： 17699 18049 22310 E/VA405 61968 MA 6306 BT4B 331123 DG/HA1 FSAF 1616 x 2.3/4 TLC GEG 50 ES GS 81144 NK 6/10 TN NU 1088 MA NUP 226 ECML PFT 30 TF SY 50 TDW YAT 212-207