S7020 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7020 CB/P4A Bearing Product Overview & Core Advantages
The S7020 CB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is preloaded and optimized to handle combined loads, efficiently supporting both radial and axial forces. Its compact design and high rigidity make it an ideal choice for high-speed spindles and other precision machinery where reliability and performance are critical.
S7020 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7020: Basic model number, indicating a 100 mm bore and 150 mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed operation and axial load capacity.
- B: Indicates a preload specification, enhancing rigidity and minimizing axial/radial play.
- P4A: Specifies the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for high-precision applications.
S7020 CB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The angular contact design with a 15° contact angle and applied preload provides superior system stiffness, critical for minimizing deflection under load in precision equipment.
Optimized for Combined Loads: This bearing is specifically engineered to handle combined radial and axial loads simultaneously, a common requirement in machine tool spindles.
High-Speed Capability: The phenolic resin cage ensures low friction and excellent performance at high rotational speeds, contributing to the bearing's limiting speed of 11,000 rpm.
Durability and Reliability: Manufactured from chrome steel for both rings and balls, the bearing offers high fatigue life and wear resistance. It is pre-lubricated for immediate operation within a wide temperature range of -30°C to 110°C.
S7020 CB/P4A Bearing Typical Application Areas
The S7020 CB/P4A is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Aerospace Control Systems
