S7020 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7020 CE/HCP4A Bearing Product Overview & Core Advantages
The S7020 CE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its P4 (ABEC-7) tolerance class and is available with a preload for enhanced system rigidity. A key feature is its use of ceramic balls, which significantly reduce weight and centrifugal forces, enabling superior high-speed performance with a limiting speed of 14,500 rpm. The combination of a 15° contact angle, phenolic cage, and factory-applied lubrication makes it an ideal solution for machine tool spindles and other high-precision, high-velocity machinery.
S7020 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S70: Denotes a high-precision bearing series.
- 20: Indicates a bore diameter of 100 mm (20 x 5 mm).
- CE: Signifies the use of Hybrid Ceramic components (Ceramic balls with steel rings).
- HC: Specifies the cage material as Phenolic Resin.
- P4A: Defines the tolerance class P4 (ABEC-7) and indicates the bearing is supplied with a specific preload.
S7020 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The ceramic balls provide lower density, reduced friction, and higher stiffness compared to all-steel designs. This directly contributes to lower operating temperatures and a higher limiting speed.
- Precision & Rigidity: Manufactured to a P4 tolerance class and available with preload, this bearing delivers minimal runout and high system rigidity, which is critical for achieving superior machining finish and positional accuracy.
- Optimized for High Speeds: The lightweight phenolic cage is engineered for stability at high rotational speeds, while the 15° contact angle provides an excellent balance between radial and axial load capacity.
- High Load Capacity: With a dynamic load rating of 10,102 lbf, this bearing is capable of handling significant combined loads (simultaneous radial and axial loads).
- Sealed and Lubricated: The sealed design protects against contamination, and the factory-applied lubrication ensures consistent performance within the specified temperature range.
S7020 CE/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- High-Frequency Motors and Spindles
- Precision Robotics
- Aerospace and Defense Systems
- Medical and Dental Equipment
