S7004 ACE/HCP4BVG275
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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S7004 ACE/HCP4BVG275 Bearing Product Overview & Core Advantages
The S7004 ACE/HCP4BVG275 is a high-precision, sealed angular contact ball bearing engineered for demanding applications. This single-row bearing is distinguished by its ceramic balls and P4 (ABEC-7) tolerance class, ensuring exceptional running accuracy and minimal vibration. Its primary advantage lies in its ability to handle high-speed operation (up to 58,000 rpm) while supporting significant combined loads due to its 25° contact angle. Preloaded and factory-lubricated, it offers immediate high rigidity and is ready for installation, making it an ideal solution for high-reliability, precision machinery.
S7004 ACE/HCP4BVG275 Bearing Model Code Explained, Specifications & Naming Convention
- S7004: Basic series designation for a high-precision angular contact ball bearing with a 20mm bore.
- ACE: Indicates specific internal design and contact angle (25°).
- HC: Denotes the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4: Specifies the P4 tolerance class (ABEC-7), denoting very high precision.
- BVG275: Likely refers to a specific preload grade and internal clearance optimized for high-speed and high-rigidity performance.
S7004 ACE/HCP4BVG275 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds. This also provides enhanced resistance to electrical erosion.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and guidance at high rotational speeds, contributing to the bearing's limiting speed of 58,000 rpm.
Precision & Rigidity: Manufactured to P4 tolerance and supplied with a preload, the bearing delivers high running accuracy, minimal run-out, and immediate stiffness upon installation, which is critical for precise positioning applications.
Sealed & Lubricated: The integral seals retain the factory-applied high-performance grease, protecting against contamination and providing long-term, maintenance-free operation within the specified temperature range.
S7004 ACE/HCP4BVG275 Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications requiring speed, precision, and reliability, including:
- High-Frequency Spindles for CNC machining centers and PCB drilling machines
- Precision Instrumentation and medical equipment
- High-Speed Motors and turbo-molecular pumps
- Aerospace auxiliary systems and instrumentation
