Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 728 ACD/HCP4A

728 ACD/HCP4A

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		7.8	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	3.58	kN
Basic static load rating	C₀	1.34	kN
Fatigue load limit	P_u	0.057	kN
Attainable speed for grease lubrication		75000	r/min
Attainable speed for oil-air lubrication		120000	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	22	N
Static axial stiffness, preload class A		31	N/µm
Preload class B	G_B	44	N
Static axial stiffness, preload class B		40	N/µm
Preload class C	G_C	88	N
Static axial stiffness, preload class C		53	N/µm
Preload class D	G_D	176	N
Static axial stiffness, preload class D		70	N/µm
Calculation factors
Calculation factor	f	1.02
Calculation factor	f₁	0.99
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	e	0.68
Calculation factor (single, tandem)	Y₂	0.87
Calculation factor (single, tandem)	Y₀	0.38
Calculation factor (single, tandem)	X₂	0.41
Calculation factor (back-to-back, face-to-face)	Y₁	0.92
Calculation factor (back-to-back, face-to-face)	Y₂	1.41
Calculation factor (back-to-back, face-to-face)	Y₀	0.76
Calculation factor (back-to-back, face-to-face)	X₂	0.67

Mass

Mass bearing

0.015

Model Number: 728 ACD/HCP4A
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：2025-12-09
Application:Power equipment,Spectrum Products,Laser Measurements,Processing machinery,roller lathe,defogging and degreasing,hydraulic pressure gauge,large agricultural machinery,gear type,marine test,Anti-defibrillation pacing
Similar models:728 CD/P4A 7280 BM 728 CD/HCP4A 728 ACD/HCP4A 728 ACD/P4A 306728
BEARING POWER International Trading Co.,Ltd. specialize in 728ACD/HCP4A products，there is large inventory of SKF 728 ACD/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 728 ACD/HCP4A Which SKF 728ACD/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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
19210	49.2252	61.9	6.35	Seals
23038 CCK/W33	190	290	75	Bearings, units and housings
BD-23196 CAK/W33-OH 3196 H	450	790	248	Bearings, units and housings
400161	14	-	-	Seals
55x100x12 HMSA10 V	55	100	12	Seals
71900 ACE/HCP4AH	10	22	6	Bearings, units and housings
71920 ACD/P4AL	100	140	20	Bearings, units and housings
FYRP 1 7/16	36.5125	-	-	Bearings, units and housings
FYTB 45 TR	45	-	-	Bearings, units and housings
NNU 4928 BK/SPW33	140	190	50	Bearings, units and housings
PCMF 252821.5 E	25	28	21.5	Bearings, units and housings
PWKR 72.2RS	-	72	80	Bearings, units and housings

Purchase the SKF 728 ACD/HCP4A Please fill in the following

Hot number： 2600760 32920 3311 A-2Z 50x75x10 HMSA10 RG 51224 6015 7030 ACD/HCP4A 71928 ACD/P4AL 71930 ACD/P4AH1 80x110x10 HMSA10 RG 90042 FYK 20 TR GEZ 106 ES NJ 2236 ECML WS 81136