S7005 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7005 ACD/HCP4A Bearing Product Overview & Core Advantages
The S7005 ACD/HCP4A is a high-precision, single-row angular contact ball bearing engineered for applications demanding exceptional accuracy and high-speed performance. Its defining feature is the 25° contact angle and P4 (ABEC-7) tolerance class, ensuring superior running accuracy and minimal vibration. This bearing is preloaded and comes pre-lubricated and sealed, making it a ready-to-install, high-reliability component ideal for supporting combined loads (radial and axial) in one direction with high rigidity.
S7005 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7005 ACD/HCP4A decodes its specific technical features:
- S7005: Denotes the basic bearing series and size (25mm bore, 47mm OD).
- A: Signifies a 25° contact angle, optimized for high axial load capacity.
- CD: Indicates a matched arrangement for duplex mounting (back-to-back or face-to-face) to achieve preload and higher rigidity.
- HC: Specifies the use of Hybrid Ceramic components (Ceramic balls with a Chrome Steel ring).
- P4A: Defines the tolerance class P4 (ABEC-7) and specific internal design for high precision and high-speed operation.
S7005 ACD/HCP4A Bearing Structural Features & Performance Benefits
The S7005 ACD/HCP4A's construction delivers distinct performance advantages:
- High-Speed & High-Rigidity Performance: The combination of a lightweight phenolic cage and hybrid ceramic construction (steel rings with ceramic balls) significantly reduces centrifugal forces, enabling a high limiting speed of 40,000 rpm while maintaining system rigidity.
- Extended Service Life & Reduced Maintenance: Ceramic balls are harder, lighter, and offer superior resistance to wear and overheating compared to steel. The integral seals retain lubrication and protect against contamination, promoting a long, maintenance-free service life.
- Superior Precision: Manufactured to a P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for the accuracy of spindles and other precision machinery.
S7005 ACD/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for demanding applications, including:
- Machine Tool Spindles
- High-Speed Motors and Spindles
- Precision Robotics
- Dental and Medical Handpieces
- Aerospace Instrumentation
