7005 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7005 CE/HCP4A Bearing Product Overview & Core Advantages
The 7005 CE/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 15° contact angle, it is optimized to support combined loads, handling significant radial loads alongside unidirectional axial loads. Its standout feature is the use of ceramic balls and a phenolic cage, which contribute to lower friction, reduced weight, and superior performance at high rotational speeds. Manufactured to the stringent P4 (ABEC-7) tolerance class, this bearing is the ideal choice for high-rigidity, high-reliability spindles and precision machinery.
7005 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CE | Hybrid Ceramic (Silicon Nitride) Balls | Reduced friction, lower operating temperature, higher speed capability, and extended service life. |
| HC | Phenolic (Polyamide) Cage | Lightweight, excellent acceleration characteristics, and reduced centrifugal force for superior high-speed performance. |
| P4A | P4 (ABEC-7) Tolerance Class with Specific Geometric Tolerances | Guarantees extremely high running accuracy, reduced vibration, and predictable performance in precision applications. |
7005 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling a limiting speed of 85,000 rpm. This hybrid design also offers electrical insulation and superior performance in lubricant-starved conditions.
- Optimized Cage Design: The phenolic cage is not only lightweight but also possesses good sliding properties and resilience, which is critical for damping vibrations and maintaining stability at ultra-high speeds.
- Precision & Rigidity: Manufactured to P4 tolerance with a 15° contact angle, this bearing provides high rigidity and precise running accuracy, making it suitable for applications with minimal deflection requirements.
- Preload & Matched Sets: The bearing is supplied with a light preload, ensuring zero internal clearance for optimal stiffness and positional accuracy. While this model is a single bearing
7005 CE/HCP4A Bearing Typical Application Areas
The 7005 CE/HCP4A is specifically designed for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Speed Motors & Drives: Spindles for PCB drilling and dental handpieces.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
