S7022 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7022 ACDGA/P4A Bearing Product Overview & Core Advantages
The S7022 ACDGA/P4A is a super-precision double row angular contact ball bearing engineered for applications demanding the highest levels of accuracy, rigidity, and speed. Its design excels at simultaneously supporting combined loads—significant radial loads and bidirectional axial loads. Featuring a compact cross-section, a universal matching designation, and a P4A tolerance class, this bearing is the ideal choice for high-reliability, high-performance spindles and precision machinery where minimal runout and exceptional rotational stability are paramount.
S7022 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S70: Super-precision bearing series with a 25° contact angle.
- 22: Dimension series code; indicates a bore of 110mm, an outside diameter of 170mm, and a width of 28mm.
- AC: Angular Contact design.
- D: Signifies a double row bearing construction.
- GA: Indicates a specific internal clearance and preload grade. In this context, it signifies an Extra light preload (Class A).
- P4A: The tolerance class, denoting super-precision dimensions and running accuracy superior to ABEC 7 / ISO P4.
S7022 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double row ball complement and 25° contact angle provide a rigid support system, enabling the bearing to handle substantial combined radial and axial loads from both directions with minimal deflection.
Super-Precision Performance: Manufactured to a P4A tolerance class, this bearing guarantees extremely tight dimensional and running accuracy, resulting in superior rotational precision, reduced vibration, and enhanced machine tool finish quality.
Optimized High-Speed Operation: The lightweight, durable phenolic resin cage ensures stable guidance of the balls at high rotational speeds, contributing to a limiting speed of 16,000 rpm. The optimized internal geometry minimizes friction and heat generation.
Universal Matchability (SU): As a universally matchable bearing, multiple S7022 ACDGA/P4A bearings can be mounted together in a set (typically 3) to achieve even higher system rigidity and precision without the need for selective assembly.
Sealed and Pre-Lubricated: The sealed design with grease lubrication protects against contamination and provides long-term, maintenance-free operation within the specified temperature range of -30°C to 110°C.
S7022 ACDGA/P4A Bearing Typical Application Areas
The S7022 ACDGA/P4A is predominantly used in high-end, precision-driven applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: For PCB drilling, semiconductor manufacturing, and other micro-machining equipment.
- High-Frequency Motors and precision rotary systems.
- Industrial Pumps and Compressors requiring high-speed and high-accuracy operation.
