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71811 ACD/HCP4 Super Precision Single Row Angular Contact Ball Bearing 7811

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71811 ACD/HCP4 Super Precision Single Row Angular Contact Ball Bearing 7811

Brand Name : CNBTZC or OEM

Model Number : 71811 ACD/HCP4

Certification : IATF16949:2016

Place of Origin : China

MOQ : 1000

Price : Please contact us,thanks

Payment Terms : L/C,T/T

Supply Ability : 200000pcs per month

Delivery Time : 2-3 weeks

Packaging Details : plastic bag,box,carton,pallet

Part Number : 71811 ACD/HCP4 Angular Contact Ball Bearing

Structure : Angular Contact

Seals Type : Open (2RZ available)

Ring type : One-piece inner and outer rings

Lubrication : Grease,Oil

Replaceable With : SKF, NSK 7811A5SN24TRP4

Coating : Without

Sealing : Without

Design : High-capacity D

Contact type : Normal contact (two-point contact)

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71811 ACD/HCP4 55*72*9 Super Precision High Capacity Single Row Angular Contact Ball Bearing Ceramic Balls High Speed

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

The 71811 ACD/HCP4 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, and hybrid ceramic balls, delivers superior performance and reliability for applications requiring high rotational accuracy and stability.

Part Number 71811 ACD/HCP4
Bearing Type Angular Contact
Measurement Unit Metric
Dimensions Inner Bore Diameter (d) 55 mm
Inner Bore Diameter Tolerance -0.007mm to 0
Outer Bore Diameter (D) 72 mm
Outer Bore Diameter Tolerance -0.007mm to 0
Width (B) 9 mm
Width Tolerance -0.2mm to 0
Specifications Contact Angle 25° (15°,40° Available)
Material Hybrid (Chrome Steel Rings, Ceramic Balls)
Cage Material Phenolic
Number of Rows 1 Single Row
Seal Type Open
Temperature Range -30°C to 150°C
Lubrication Grease or Oil
Tolerance Class P4 (ABEC-7)
Weight 0.073 kg
Matched Arrangement No
Universal Matching Bearing No
Preload Not applicable
Load and Speed Dynamic Radial Load 9560 N
Static Radial Load 10200 N
Reference Speed For Grease (r/min) 19,000 rpm
Limiting Speed For Oil(r/min) 30,000 rpm

71811 ACD/HCP4 Super Precision Single Row Angular Contact Ball Bearing 7811

71811 ACD/HCP4 Super Precision Single Row Angular Contact Ball Bearing 7811

What's the Performance Features of 71811 ACD/HCP4 Bearing?

The 71811 ACD/HCP4 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 ACD/HCP4 Bearing?

The 71811 ACD/HCP4 bearing, a high-precision angular contact ball bearing, is designed to meet the demands of advanced applications across multiple industries. Below is an optimized and detailed breakdown of its key application areas:


1. Machine Tools & Precision Machining

  • Precision Machine Tool Spindles: Ideal for 5-axis machining centers, heavy-duty cutting equipment, and other CNC machines requiring ultra-precision under high-speed rotation.
  • Electric Spindles & High-Speed Milling Units: Reduces friction and thermal expansion in electric spindles, ensuring stable operation and extended tool life.
  • Deep-Hole Drilling Equipment: Maintains rigidity and accuracy during deep-hole drilling processes, critical for aerospace and automotive components.

2. Aerospace & Defense

  • Aeroengine Gearboxes & Turbine Shaft Systems: Withstands extreme speeds, temperatures, and combined axial/radial loads in turbine shafts and gearboxes.
  • Flight Control Systems: Ensures precision in actuators, rotor drives, and other flight-critical systems.
  • Satellite Attitude Control Mechanisms: Provides stability and reliability in gyroscopes and attitude control systems for satellites.

3. Industrial Robotics & Automation

  • Collaborative Robot Joints & Rotary Axes: Enhances motion accuracy and responsiveness in collaborative robots used for welding, material handling, and assembly tasks.
  • High-Precision Reducers: Supports harmonic drives and RV reducers, ensuring smooth and precise motion transmission in robotic systems.
  • Rotary Positioning Units: Critical for automated production lines, enabling accurate and repeatable positioning of workpieces.

4. Energy & Heavy Machinery

  • Wind Turbine Pitch & Yaw Drive Systems: Handles dynamic loads in pitch and yaw mechanisms, ensuring reliable operation in wind turbines.
  • Centrifugal Compressor Shafts: Operates efficiently in oil and gas industries, supporting high-speed compression processes.
  • High-Speed Pumps: Used in chemical process pumps and hydraulic pumps, ensuring consistent performance and durability.

5. Medical Equipment

  • CT/MRI Rotating Gantry Drive Systems: Minimizes vibration and ensures smooth rotation in imaging systems, reducing image artifacts.
  • Precision Transmission Modules in Surgical Robots: Enhances the accuracy and responsiveness of robotic-assisted surgical tools.
  • Dental High-Speed Drill Spindles: Maintains low noise and sterility during high-speed operation, ensuring patient comfort and safety.

6. Semiconductor Manufacturing

  • Lithography Wafer Alignment & Motion Stages: Delivers nanometer-level precision in cleanroom environments, critical for photolithography and wafer alignment.
  • Rotating Components in Vacuum Coating Equipment: Ensures contamination-free operation in vacuum chambers.
  • Wafer Cutting/Polishing Equipment Spindles: Provides stability and accuracy during wafer processing, minimizing defects.

7. Special Environment Machinery

  • High-Temperature Furnace Drive Systems: Operates reliably in extreme heat environments, such as glass manufacturing furnaces.
  • Cryogenic Superconducting Equipment: Supports rotating mechanisms in cryogenic applications, maintaining performance at ultra-low temperatures.
  • Cleanroom Robotic Arms: Designed for ultra-high-purity environments, ensuring contamination-free operation in semiconductor and pharmaceutical industries.

CERTIFICATE RoHS & REACH, IATF16949:2016
Feature High Speed and Stiffness,High Running Accuracy,High Load Carrying Capacity
Service OEM&ODM Customized Services
Samples Please Contact Us
Service Online Support,Professional Service
Size Standard,For custom sizes ,please contact us
Factory Manufacturer Yes

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

71811 ACD/HCP4 Super Precision Single Row Angular Contact Ball Bearing 7811


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