S7210 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7210 CD/P4A Bearing Product Overview & Core Advantages
The S7210 CD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring superior rotational accuracy and rigidity. This P4 (ABEC-7) tolerance class bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, making it ideal for machine tool spindles and other high-speed machinery. Its compact design, featuring a 50mm bore and 20mm width, offers a space-saving solution without compromising performance. The bearing is pre-lubricated and sealed, ensuring long-term reliability and reduced maintenance needs.
S7210 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7210: Basic model number denoting a 50mm bore, 90mm OD single-row angular contact ball bearing.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate thrust capacity.
- D: Indicates a high rigid phenolic cage, contributing to low friction and high-speed capability.
- P4A: Specifies the P4 (ABEC-7) precision tolerance class, ensuring extremely tight dimensional and running accuracy for demanding applications.
S7210 CD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured to P4 tolerance class with a 15° contact angle, this bearing provides exceptional running accuracy and stiffness, which is critical for minimizing deflection in high-speed spindle applications.
Superior Load Capacity: The optimized internal geometry and chrome steel construction enable it to handle significant radial and one-direction axial loads simultaneously, with a dynamic load rating of 10,102 lbf.
Enhanced High-Speed Performance: The lightweight phenolic cage (D) reduces centrifugal forces, allowing for a high limiting speed of 16,000 rpm. The 15° contact angle further supports stable operation at elevated speeds.
Pre-Lubricated and Sealed: Comes pre-filled with grease and features integral seals, offering protection against contamination and providing a maintenance-free service life within its specified temperature range of -30° to 110°C.
S7210 CD/P4A Bearing Typical Application Areas
The S7210 CD/P4A is ideally suited for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Robotic Arms and Precision Gearboxes
