7209 ACD/P4A 45*85*19 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing

Super-precision, high-capacity, single row angular contact ball bearing

The 7209 ACD/P4A bearing,with a bore diameter of 45 mm,outside diameter of 85 mm,and width of 19 mm,features precise dimensions, high static load capacity, and is manufactured to the P4A precision grade. This bearing delivers superior performance and reliability, making it ideal for applications that require high rotational accuracy and stability.

What's the Performance Features of 7209 ACD/P4A Bearing?

The 7209 ACD/P4A angular contact ball bearing is manufactured to P4A precision grade standards, excels in high-precision and high-performance applications. It handles both radial and axial loads simultaneously, supports high-speed operation with stability, minimizes torque and friction for energy efficiency, and offers enhanced rigidity for accuracy under heavy loads. Built with hybrid ceramic balls, this durable bearing ensures extended service life and effective performance across a wide temperature range, making it ideal for applications requiring superior rotational accuracy and reliability.

What's the Applications of the 7209 ACD/P4A Bearing?

The 7209 ACD/P4A bearing, a precision angular contact ball bearing, is widely used in various fields due to its high precision (P4A grade), high-speed capability, and optimized 25° contact angle design. Below are its main application areas:

1. Precision Machine Tools and Spindle Systems

• Primarily used in super-precision machine tool spindles, such as machining centers and CNC machines, capable of withstanding high-speed rotation (up to 24,000 RPM) while maintaining stability.

• In electric spindles, preload adjustment balances centrifugal force effects, reducing slippage and heat generation while enhancing rigidity and service life.

2. Industrial Machinery and Equipment

• Welding Equipment:
  Used in AC welders and manual welding machines to handle combined axial and radial loads.

• Drying and Mixing Equipment:
  Includes flash dryers, rotary dryers, and laboratory mixing equipment, suitable for continuous operation in high-temperature environments .

• Plastics and Rubber Industry:
  Applied in injection molding machines and extruders, meeting the requirements for high-precision transmission .

3. Specialized Equipment and Precision Instruments

• Medical Devices:
  Such as surgical equipment, requiring low noise and high cleanliness during operation.

• Cleaning and Sorting Machinery:
  Used in high-pressure cleaning equipment, withstanding frequent start-stop impacts .

4. Other High-End Applications

• Textile Machinery:
  High-precision rotating components in equipment such as pressing tables.

• Testing and Laboratory Equipment:
  Such as centrifuges and precision measuring instruments, relying on its low-vibration characteristics .