S7020 ACE/HCP4BVG275
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7020 ACE/HCP4BVG275 Bearing Product Overview & Core Advantages
The S7020 ACE/HCP4BVG275 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a single, preloaded unit, it delivers superior rigidity and runout control. Its capability to handle combined loads (radial and axial) efficiently, combined with a P4 (ABEC-7) tolerance class, makes it ideal for high-speed spindles and other precision machinery where reliability is paramount.
Model Code Breakdown
- S7020: Basic series designation, indicating a 100mm bore and 150mm outside diameter.
- ACE: Signifies specific internal design features, including a 25° contact angle and optimized internal geometry for high-speed operation.
- HC: Denotes the use of Hybrid Ceramic balls (Silicon Nitride), which reduce friction, heat generation, and wear, enabling higher limiting speeds.
- P4: Identifies the tolerance class (P4 / ABEC-7), ensuring extremely tight dimensional and running accuracy.
- BVG275: Indicates a specific preload level and the use of a high-performance grease suitable for the specified temperature range.
S7020 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 contributes directly to the high limiting speed of 12,700 rpm.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable guidance of the ceramic balls at ultra-high rotational speeds, offering excellent strength with minimal friction.
Preloaded Design: Supplied as a preloaded single bearing, it provides immediate high stiffness and precise axial and radial positioning, eliminating internal clearance for superior rotational accuracy.
High Load Capacity: With a dynamic load rating of 9518 lbf and a static load rating of 8550 lbf, this bearing is engineered to handle significant combined loads reliably.
S7020 ACE/HCP4BVG275 Bearing Typical Application Areas
This precision bearing is ideally suited for applications requiring high speed, high rigidity, and exceptional accuracy, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics (Articulated arm joints, high-precision actuators)
- Aerospace & Defense Systems (Gyroscopes, radar systems, flight control mechanisms)
- High-Frequency Motors and Spindles
