7204ACD/HCP4A Super-precision Angular Contact Ball Bearings, 25° Contact Angle, High-capacity Design

🔍

7204ACD/HCP4A

Bore Diameter:20 mm

Outside Diameter:47 mm

Width:14 mm

Weight:0.09 kg

Min. Order:1 Piece

The 7204ACD/HCP4A Ultra-precision angular contact ceramic ball bearings are widely used in high-speed, high-precision applications and situations where there is a risk of shaft current, such as: high-speed machining center spindles, high-speed electric spindles, grinding machine spindles, lathe spindles, ball screw support mechanisms, and medical equipment (high-speed dental drills).

The 7204ACD/HCP4A bearing is a super-precision angular contact ball bearings with an inner diameter of 20 mm , an outer diameter of 47 mm, a width of 14 mm. It typically uses P4A grade precision tolerances and Carbon chromium steel rings, HC = Balls made of bearing grade silicon nitride Si3N4 (hybrid bearing) rolling mlement. Its dynamic radial rated load is approximately 11283 N, its static radial rated load is approximately 5497 N. open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

20 mm

Outside Diameter:

47 mm

Thickness:

14 mm

Weight:

0.09 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

11283

Static load Capacity, Radial (Cor):

5497

Reference speed (Grease rpm):

37918

Limiting speed (Oil rpm):

55946

Specifications:

Structure:

Angular Contact

Number of Rows:

Precision Rating:

P4A

Bearing Material:

Carbon chromium steel

Cage Type:

Cotton fabric reinforced phenolic resin or carbon fibre reinforced PEEK, outer ring centred

Seals Type:

open

Number of Balls:

Rolling Mlement Material:

HC = Balls made of bearing grade silicon nitride Si3N4 (hybrid bearing)

Bore Type:

Z = Cylindrical Bore

System of Measurement:

Metric

Series:

72..-ACD/HCP4A

Rolling Element:

balls

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

100 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

7204ACD/HCP4A bearings have the advantages of ceramic balls materials, high speed, ultra-high precision and high thermal stability, corrosion resistant, non-magnetic, and are therefore widely used in the Machine tool spindles, high-speed electric spindles, precision instruments, aerospace and semiconductor equipment.

Part Number	7204ACD/HCP4A
Bearing Type	super-precision angular contact ball bearings
Internal design	ACD = 25° contact angle, high-capacity design
Series	72..-ACD/HCP4A
Weight [kg]	0.09
Units	Metric
Contact type	2-point contact
Accuracy class	P4A
Rows NO.	1
Cage	Cotton fabric reinforced phenolic resin or carbon fibre reinforced PEEK, outer ring centred
Dimension series	ISO dimension series 02
Contact angle - α	25 °
Manufacturer Part Code	7204 ACD/HCP4A
Bore Type	Z = Cylindrical Bore
Ring material	Carbon chromium steel
Ball material	HC = Balls made of bearing grade silicon nitride Si3N4 (hybrid bearing)
Balls qty（single row）	11
Temperature - T(min) [°C]	-30
Temperature - T(max) [°C]	+110
Single bearing - execution and preload	Single standalone bearing
Ring type	inner rings(1 piece), outer rings(1 piece)
Load Direction	Angular Contact
Seal type	open
Grease quantity - G_ref [cm³]	1.5
Dimension
d φ Inside [inch]	0.787
D Φ Outside [inch]	1.850
B Width [inch]	0.551
r₁,r₂(min.) Chamfer [inch]	0.039
r₃,r₄(min.) Chamfer [inch]	0.012
r_a(max.) Fillet [inch]	0.039
r_b(max.) Fillet [inch]	0.012
d₁ [inch]	1.146
d₂ [inch]	1.146
D₁ [inch]	1.524
D₂ [inch]	1.610
Balls diameter [inch]	0.313
Performance (Load Capacity and speeds)
C_r Dynamic Radial [lbf]	2536
C_0r Static Radial [lbf]	1235
P_u Fatigue Radial [lbf]	35
Attainable speeds (Grease) [r/min]	37918
Attainable speeds (Oil-air) [r/min]	55946
Abutment dimensions
d_a(min.) [inch]	1.008
d_b(min.) [inch]	1.008
D_a(max.) [inch]	1.630
D_b(max.) [inch]	1.756
d_n [inch]	1.224

The 7204ACD/HCP4A Ultra-precision angular contact ceramic ball bearings are primarily composed of high-precision bearing steel inner and outer rings, silicon nitride ceramic balls, and a cage. The cage is available in ball-guided polyamide (silent series) or brass. Contact angles are available in various specifications, including 15°, 25°, and 40°, with precision grades reaching P4 and above.

Ultra-precision angular contact ceramic ball bearings feature low-density ceramic balls, resulting in low centrifugal force, significantly improved limiting speed, and lower heat generation. The electrical insulation properties of the ceramic material effectively prevent electrolytic corrosion, extending bearing life. The silent series uses ball-guided polyamide cages to reduce vibration and noise, and optimized tolerances ensure more uniform load distribution and superior radial stiffness in bearing groups.

Share this product to:

Let more people see your product

How can you buy 7204ACD/HCP4A Super-precision Angular Contact Ball Bearings, 25° Contact Angle, High-capacity Design on the Internet?
High quality 7204ACD/HCP4A ( 0.09 kg Mass, ID: 20 mm OD: 47 mm WD: 14 mm , 72..-ACD/HCP4A Series , 1 Rows , P4A Accuracy Class , Carbon chromium steel Material , 11283 Radial dynamic , 5497 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. 7204ACD/HCP4A. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

7204ACD/HCP4A Super-precision Angular Contact Ball Bearings, 25° Contact Angle, High-capacity Design

7204ACD/HCP4A Related Products »

Product Groups

Information

Category