S7012 ACB/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S7012 ACB/P4ADGA Bearing Product Overview & Core Advantages
The S7012 ACB/P4ADGA is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. Its universal matchable (SU) design allows for simplified mounting in various configurations without requiring selective assembly. This bearing excels at simultaneously handling combined radial and axial loads from both directions, making it an ideal, compact solution for high-speed spindles and other precision machinery where high rigidity and operational reliability are paramount.
S7012 ACB/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
- S7012: Basic model number for a 60mm bore, 95mm OD double row angular contact ball bearing.
- A: Denotes a 25° contact angle, optimized for supporting significant axial loads.
- C: Indicates a phenolic (cellulose acetate butyrate) cage, contributing to low weight, high strength, and excellent performance at high speeds.
- B: Specifies an extra light preload (Class A), which minimizes friction and heat generation for superior high-speed operation.
- P4A: Identifies the tolerance class, signifying very high precision levels for runout and dimensional accuracy beyond standard ABEC 7 (P4).
- DG: Stands for the bearing being universal matchable (SU) and supplied as part of a set of 2 bearings.
- A: Confirms the bearing is pre-lubricated with grease.
S7012 ACB/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides a significantly stiffer support structure compared to single row bearings, effectively managing combined loads and moment loads. The 25° contact angle is specifically chosen to handle substantial bidirectional axial thrust.
Superior High-Speed Performance: The combination of the lightweight phenolic cage and the optimized extra light preload minimizes centrifugal forces and friction, enabling the bearing to achieve its high limiting speed of 32,500 rpm with stable operation.
Exceptional Precision & Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration for ultra-precise applications. The sealed design with pre-applied grease protects against contamination and provides reliable lubrication throughout the specified temperature range.
S7012 ACB/P4ADGA Bearing Typical Application Areas
The S7012 ACB/P4ADGA is ideally suited for high-performance machinery requiring utmost precision and speed, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors
- Precision Robotic Drives
- Aerospace & Defense Instrumentation
- Medical & Dental Equipment Spindles
