Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 729 CD/HCP4A

729 CD/HCP4A

Dimensions

d		9	mm
D		26	mm
B		8	mm
d₁		15.1	mm
d₂		15.1	mm
D₁		20.9	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		6.5	mm

Abutment dimensions

d_a	min.	11.4	mm
d_b	min.	11.4	mm
D_a	max.	23.6	mm
D_b	max.	24.2	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		16.3	mm

Calculation data

Basic dynamic load rating	C	4.1	kN
Basic static load rating	C₀	1.66	kN
Fatigue load limit	P_u	0.071	kN
Attainable speed for grease lubrication		80000	r/min
Attainable speed for oil-air lubrication		120000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	9
Reference grease quantity	G_ref	0.258	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	15	N
Static axial stiffness, preload class A		14	N/µm
Preload class B	G_B	30	N
Static axial stiffness, preload class B		19	N/µm
Preload class C	G_C	60	N
Static axial stiffness, preload class C		26	N/µm
Preload class D	G_D	120	N
Static axial stiffness, preload class D		36	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	1.06
Calculation factor	f_HC	1.01
Calculation factor	f₀	8.3

Mass

Mass bearing

0.018

Model Number: 729 CD/HCP4A
Inner Diameter：9mm Outer Diameter：26mm 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:rolling mill roll neck and slowdown device,noise reduction equipment,lifting upgrade,X-ray Equipment,security equipment,medical treatment,Reflective Materials Industrial fabrics,other lathe,machine lathe,screen filter,equipment
Similar models:2789/2729 729 ACD/P4A 729 ACD/HCP4A 331729 729 CD/HCP4A 729 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 729CD/HCP4A products，there is large inventory of SKF 729 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 729 CD/HCP4A Which SKF 729CD/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： 16021 30306 6217-2RS1 7008 ACE/HCP4AH1 71908 CE/P4A 7314 BEGBY AOHX 32/600 G FY 45 TF/VA228 HE 3032 E LM 451345/310 NJ 18/800 ECMA P 25 FM PCM 556030 E PPM 101210 SAFS 22217-11