S7020 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7020 ACB/P4A Bearing Product Overview & Core Advantages
The S7020 ACB/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and superior rigidity. Engineered to accommodate combined loads (radial and axial loads in one direction), it features a 25° contact angle for optimal axial load capacity. Manufactured to a P4 (ABEC-7) tolerance class, it ensures exceptional running accuracy and is pre-lubricated for immediate use, making it an ideal choice for high-speed spindles and other precision machinery.
S7020 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7020: Basic model number, indicating a 100 mm bore and 150 mm outside diameter.
- ACB: Designates an Angular Contact Bearing with a 40° contact angle and specific internal design optimizations.
- P4A: Signifies the tolerance class P4 (ABEC-7), denoting very high dimensional and running accuracy. The "A" suffix may indicate a specific internal clearance or preload grouping.
S7020 ACB/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The single-row design with a phenolic resin cage provides excellent dimensional stability and low friction, contributing to high running accuracy and smooth operation at high speeds. The P4 tolerance ensures minimal runout and vibration.
Optimized Load Capacity: The 25° contact angle is engineered to efficiently support significant axial loads in one direction, as well as combined radial and axial loads, making it suitable for applications with demanding load requirements.
High-Speed Performance: The lightweight phenolic cage and optimized internal geometry allow for a high limiting speed of 10,000 rpm, making it ideal for high-speed applications like machine tool spindles.
Sealed & Pre-Lubricated: The bearing is sealed and comes pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S7020 ACB/P4A Bearing Typical Application Areas
The S7020 ACB/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., milling, grinding)
- High-Frequency Motors
- Precision Gearboxes
- Pumps and Compressors
- Medical and Laboratory Equipment
