71811 CD/P4 Super Precision Single Row Angular Contact Ball Bearing 7811

Product Specification

71811 CD/P4 55*72*9  Super Precision High Capacity Single Row Angular Contact Ball Bearing  

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

The 71811 CD/P4 bearing,bore diameter is 55 mm, outside diameter is 72 mm,width is 9 mm,featuring precise dimensions, high static load capacity, P4 precision grade, delivers superior performance and reliability for applications requiring high rotational accuracy and stability.

What's the Performance Features of 71811 CD/P4 Bearing?

The 71811 CD/P4 angular contact ball bearing is engineered for high-precision and high-performance applications, featuring very tight tolerances suitable for precise machinery, the ability to handle both radial and axial loads simultaneously, high-speed operation with stability, low torque and friction for energy efficiency, enhanced rigidity for accuracy under heavy loads, durability with extended service life, effective performance across a wide temperature range.

What's the Applications of the 71811 CD/P4 Bearing?

The 71811 ACD/HCP4 bearing, a high-precision angular contact ball bearing, is designed to meet the stringent demands of various advanced applications. Here’s an optimized and detailed breakdown of its key application areas based on your provided information:

1. Precision Machine Tools & Machining Equipment

• CNC Lathe/Milling Machine Spindles: Capable of handling axial forces from tool feeds (e.g., 5-8kN axial load during stainless steel turning) while maintaining surface roughness ≤Ra 0.2μm at high speeds (10,000-15,000 rpm).
• Jig Grinder Grinding Wheel Spindles: Achieves ≤2μm repeatability for aerospace or mold components, ensuring precision in grinding operations.

2. Industrial Robotics & Automation

• SCARA Robot Z-Axis Drives: Supports vertical axial loads (robot arm weight) and inertial forces, minimizing vibration for smooth operation.
• Delta Robot Rotary Joints: Ensures ±0.02mm positioning accuracy during high-speed pick-and-place operations (100-150 cycles/min), enhancing productivity and precision.

3. Aerospace Critical Systems

• Aircraft Fuel Pump Drive Shafts: Resistant to hydraulic oil environments, capable of handling axial thrust loads (3-5kN) and speeds up to 12,000 rpm, ensuring reliable fuel delivery.
• Satellite Attitude Control Flywheels: Enables micro-vibration-free, precise angular adjustments in vacuum conditions, crucial for satellite stability and control.

4. Medical & Optical Equipment

• CT Scanner Rotating Gantries: Supports X-ray tube/detector rotation (≤0.5rps) for artifact-free imaging, improving diagnostic accuracy.
• Laser Cutter Focusing Heads: Bears axial gravity loads (≤200N) and radial cutting reaction forces, ensuring stable and accurate laser cutting performance.

5. Semiconductor Manufacturing

• Lithography Wafer Stage Drives: Delivers ≤10nm motion control in cleanroom environments, essential for nanometer-level precision in wafer alignment and processing.
• Wafer Polisher Spindles: Balances axial polishing pressure and radial centrifugal forces at 6,000-8,000 rpm, ensuring high-quality wafer surfaces.

6. Energy & Fluid Machinery

• Centrifugal Compressor Shafts: Handles unidirectional axial thrust (10-15kN) in oil/gas boosting systems, providing stable and efficient compression.
• High-Speed Turbine Generators: Operates stably at 12,000-18,000 rpm under moderate temperatures (≤120°C), ensuring reliable power generation.

If you need more detailed information , feel free to ask!