Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 729 CD/P4A

729 CD/P4A

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		67000	r/min
Attainable speed for oil-air lubrication		100000	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		13	N/µm
Preload class B	G_B	30	N
Static axial stiffness, preload class B		17	N/µm
Preload class C	G_C	60	N
Static axial stiffness, preload class C		23	N/µm
Preload class D	G_D	120	N
Static axial stiffness, preload class D		33	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	8.3

Mass

Mass bearing

0.02

Model Number: 729 CD/P4A
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:static control,machine tool spindle,Laser Cutting,Roller,Film machine,Laser Devices,coal,mechanical and electrical,plastic rolling,rolling mill roll neck and slowdown device,baler
Similar models:729 ACD/P4A 729 ACD/HCP4A 331729 729 CD/HCP4A 2789/2729 729 CD/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 729CD/P4A products，there is large inventory of SKF 729 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 729 CD/P4A Which SKF 729CD/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
12631	31.75	62	6.35	Seals
44.7x62.7x14.2 TP	44.6	63.04	-	Seals
51243	130.175	155.6	12.7	Seals
591/500 F	500	600	60	Bearings, units and housings
86343	-	-	50.8	Seals
99465	117.475	127	15.875	Seals
HE 215	63.5	75	43	Bearings, units and housings
HJ 240 EC	200	257.9	23	Bearings, units and housings
LS 3552	35	52	3.5	Bearings, units and housings
PCZ 2432 E	38.1	42.06875	50.8	Bearings, units and housings
SAF 1622 x 3.7/8 T	98.425	-	-	Bearings, units and housings
W 607 R-2RZ	7	19	6	Bearings, units and housings

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