S7020 CDGA/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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S7020 CDGA/P4A Bearing Product Overview & Core Advantages
The S7020 CDGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Its single-row design with a 15° contact angle and Extra Light (Class A) preload provides superior rotational accuracy and high-speed capability. This bearing is engineered to accommodate combined loads, efficiently handling both radial and axial loads in one direction. Manufactured to the stringent P4A tolerance class, it is an ideal choice for high-performance spindles and precision machinery where high rigidity and minimal runout are critical.
S7020 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7020: Basic model number denoting a 100mm bore and 150mm outside diameter.
- C: Signifies a 15° contact angle.
- D: Indicates a phenolic resin cage.
- GA: Denotes Universal Matchable (SU) bearings supplied in a set of 3 for preloaded arrangements.
- P4A: The tolerance class, specifying extremely tight dimensional and running accuracy limits superior to ABEC 7.
S7020 CDGA/P4A Bearing Structural Features & Performance Benefits
High Precision and Rigidity: The P4A tolerance class ensures minimal dimensional variation and superior running accuracy, which is essential for applications like machine tool spindles. The extra light preload eliminates internal clearance, resulting in high system rigidity and precise shaft positioning.
Optimized for High-Speed Operation: The lightweight phenolic cage (D) is designed for high-speed applications, reducing centrifugal forces and allowing for a limiting speed of 10,000 rpm. The 15° contact angle provides an excellent balance between radial load capacity and high-speed axial load performance.
Superior Load Capacity: With a dynamic load rating of 18,720 lbf and a static load rating of 19,125 lbf, this bearing is built to handle significant combined loads.
Pre-Lubricated and Sealed: The bearing comes pre-greased and sealed, protecting against contamination and providing maintenance-free operation within its specified temperature range of -30°C to 110°C.
S7020 CDGA/P4A Bearing Typical Application Areas
The S7020 CDGA/P4A is ideally suited for high-precision, high-speed applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Aerospace Control Systems
- Medical and Dental Handpieces
