71801AC P4A GA Super Precision Single Row Angular Contact Ball Bearing 12X21X10 mm 7801

71801AC P4A GA 12X21X10 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing 

Matched set of two super-precision, high-capacity,single row angular contact ball bearings

The 71801AC P4A GA bearing,bore diameter is 12 mm, outside diameter is 21mm,width is 10 mm,featuring precise dimensions, high static load capacity, P4A precision grade, delivers superior performance and reliability for applications requiring high rotational accuracy and stability.

What's the Performance Features of 71801AC P4A GA Bearing?

The 71801AC P4A GA angular contact ball bearing delivers exceptional performance with P4A-grade precision, ensuring ultra-tight tolerances for high-precision machinery. Its 25° contact angle enables simultaneous handling of radial and axial loads, supports stable high-speed operation up to 60,000 RPM with low torque and friction for energy efficiency.It offers enhanced rigidity under heavy loads, extended service life, and reliable performance across a wide temperature range, making it ideal for demanding applications in industrial automation, robotics, and high-speed spindles.

What's the Applications of the 71801AC  P4A GA Bearing?

The 71801AC P4A GA angular contact ball bearing is designed for high-precision, high-speed applications that demand exceptional load capacity and reliability. Here are its key applications across industries:

1. Industrial Automation & Robotics

• Robotic Joints: Enables precise movement in collaborative robots (cobots) and industrial robotic arms, handling radial forces from payloads and axial thrust from joint rotations.
• High-Speed Spindles: Used in automated machining centers or assembly lines for components requiring tight tolerances (e.g., motor shafts, gear drives).
• Linear Motion Systems: Supports linear guides and actuators in pick-and-place machines or conveyor systems, ensuring smooth operation under combined loads.

2. Machine Tools & CNC Equipment

• Spindle Bearings in Milling/Drilling Machines: Maintains micron-level accuracy during high-speed cutting operations, resisting radial forces from tool engagement and axial loads from feed motions.
• Grinding Machines: Handles the heavy loads and vibrations in precision grinding processes, critical for surface finish and dimensional stability of workpieces.
• Turning Centers: Supports rotating shafts in lathes, enabling high-speed machining of complex parts with minimal runout.

3. Aerospace & Defense

• Actuation Systems: Used in aircraft control surfaces or missile guidance systems for reliable motion under extreme conditions (e.g., temperature fluctuations, high G-forces).
• High-Speed Turbomachinery: Supports small-diameter shafts in auxiliary power units (APUs) or sensor drives, requiring low friction and high durability.

4. Electronics & Semiconductor Manufacturing

• Wafer Processing Equipment: Ensures precision in semiconductor wafer grinders, polishers, or deposition tools, where contamination and vibration must be minimized.
• Hard Disk Drive (HDD) Motors: Enables high-speed rotation (up to 10,000+ RPM) with low noise for data storage devices, critical for read/write accuracy.

5. Medical Devices & Precision Instruments

• Surgical Robots: Provides smooth, precise movement in minimally invasive surgical tools, requiring high reliability and sterility.
• Diagnostic Equipment: Supports rotating components in MRI machines or centrifuges, where balance and low vibration are essential for accurate results.

6. Automotive & High-Performance Engineering

• Electric Vehicle (EV) Motors: Handles radial loads from rotor mass and axial forces from gear meshing in high-speed EV drivetrains, enhancing energy efficiency.
• Turbocharger Bearings: Withstands high temperatures and speeds in turbocharger shafts for internal combustion engines, improving power density.

7. Optical & Photonic Systems

• Laser Scanners: Supports rotating mirrors or lenses in laser cutting/engraving machines, ensuring precise beam alignment at high speeds.
• Spectrometers: Maintains stability in rotating prisms or gratings for analytical instruments, critical for spectral accuracy.

​