7000 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7000 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.017 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
26 mm
Outside diameter tolerance
-0.005mm to 0
Width
8 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
9
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
893 lbf
Radial static load rating
360 lbf
Limiting speed
120 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 64.14
/ each
In Stock
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7000 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7000 ACD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. As a single-row bearing with a 25° contact angle, it is optimized to handle combined loads, particularly substantial axial loads in one direction. Its key advantages include superior high-speed capability enabled by a phenolic cage and ceramic balls, and P4 (ABEC-7) precision class for minimal runout and vibration. The bearing is pre-lubricated and available with a preload, ensuring high system rigidity and immediate operational readiness.
7000 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7000 ACD/HCP4A can be broken down as follows to understand its technical specifications:
- 7000: Basic series designation for a metric, single-row angular contact ball bearing.
- ACD: Signifies a 25° contact angle and a specific internal design optimized for high rigidity and speed.
- H: Indicates that the bearing is supplied with a preload for enhanced stiffness and precise shaft positioning.
- C: Denotes the use of ceramic (Si3N4) balls, which reduce centrifugal forces, lower operating temperature, and extend service life at high speeds.
- P4: Specifies the tolerance class, equivalent to ABEC-7, indicating ultra-precise manufacturing tolerances for high-precision applications.
- A: Indicates that the bearing's outer ring has a specific tolerance for precise mounting.
7000 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls significantly reduces centrifugal forces and friction, allowing the bearing to achieve a high limiting speed of 120,000 rpm.
- High Rigidity and Precision: The 25° contact angle and available preload provide high axial and radial stiffness, minimizing deflection under load and ensuring precise rotational accuracy critical for precision machinery.
- Extended Service Life: Ceramic balls are harder, lighter, and more wear-resistant than steel, and they are non-conductive and corrosion-resistant. This leads to reduced operating temperatures and a longer operational lifespan, especially in demanding environments.
- Superior Accuracy: Manufactured to P4 tolerance class, this bearing guarantees tight dimensional control and minimal runout, which is essential for applications requiring smooth, quiet, and vibration-free operation.
7000 ACD/HCP4A Bearing Typical Application Areas
This high-precision, high-speed angular contact ball bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers, PCB drilling machines, and grinding machines.
- Precision Instrumentation and medical devices such as dental handpieces and laboratory equipment.
- Turbochargers and other high-rotational-speed automotive or aerospace components.
- High-Frequency Motors and servo drives.
