Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 728 CD/P4A

728 CD/P4A

Dimensions

d		8	mm
D		24	mm
B		8	mm
d₁		13.1	mm
d₂		13.1	mm
D₁		18.9	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		6.2	mm

Abutment dimensions

d_a	min.	10.4	mm
d_b	min.	10.4	mm
D_a	max.	21.6	mm
D_b	max.	22.2	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		14.3	mm

Calculation data

Basic dynamic load rating	C	3.71	kN
Basic static load rating	C₀	1.37	kN
Fatigue load limit	P_u	0.057	kN
Attainable speed for grease lubrication		70000	r/min
Attainable speed for oil-air lubrication		110000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	8
Reference grease quantity	G_ref	0.228	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	14	N
Static axial stiffness, preload class A		12	N/µm
Preload class B	G_B	28	N
Static axial stiffness, preload class B		15	N/µm
Preload class C	G_C	56	N
Static axial stiffness, preload class C		21	N/µm
Preload class D	G_D	112	N
Static axial stiffness, preload class D		30	N/µm
Calculation factors
Calculation factor	f	1.02
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.01
Calculation factor	f_2C	1.03
Calculation factor	f_2D	1.05
Calculation factor	f_HC	1
Calculation factor	f₀	7.9

Mass

Mass bearing

0.017

Model Number: 728 CD/P4A
Inner Diameter：8mm Outer Diameter：24mm Width：8mm
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:hydraulic connector,extruder,motorcycle,bathroom facilities,ventilation equipment,special broaching machine,dye pigments,forklift industry,Insect Capture,Digital Generator,Spectrum Products
Similar models:728 ACD/P4A 306728 728 ACD/HCP4A 728 CD/HCP4A 7280 BM 728 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 728CD/P4A products，there is large inventory of SKF 728 CD/P4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 728 CD/P4A Which SKF 728CD/P4A 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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
250 VA V	225	-	-	Seals
32303	17	47	20.25	Bearings, units and housings
33019/DF	95	145	-	Bearings, units and housings
38x50x7 HMS5 V	38	50	7	Seals
411003	1045	-	-	Seals
62206-2RS1	30	62	20	Bearings, units and housings
6334/HC5C3S0VA970	170	360	72	Bearings, units and housings
FYNT 100 F	100	-	-	Bearings, units and housings
FYR 3 15/16-3	100.0125	-	-	Bearings, units and housings
OKCX 240	240		-
SAFS 22520-11 x 3.3/8 TLC	85.725	-	-	Bearings, units and housings
SAW 23544 x 7.7/8	200.025	-	-	Bearings, units and housings

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Hot number： 15141 11225 250x310x25 HDS1 R 6017 N 71932 CD/HCP4A AXK 4060 NJ 210 ECJ P 35 TF S71918 CD/HCP4A SNL 3048 G SSAFS 23028 KA x 4.15/16 SSAFS 23048 KAT x 9 SY 30 TF/VA228 W 61804 W 623-2RS1