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Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4AQBCD

Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4AQBCD

The 7021 ACD/HCP4AQBCD is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. Its 25° contact angle and ceramic balls ensure smooth operation under heavy loads.

This set includes four matched bearings with a heavy preload (Class D), offering excellent radial load capacity up to 54450 lbf. It spins efficiently at speeds up to 16250 RPM, suitable for high-performance applications.

The open design allows easy lubrication, while the phenolic cage enhances durability. Ideal for machine tools or spindle systems where precision and reliability are key.

Weighing 5.27kg, this bearing operates in temperatures from -30°C to 110°C. Its P4A tolerance class ensures consistent performance, making it a solid choice for demanding environments.

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Product Parameters

  • Part Number 7021 ACD/HCP4AQBCD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 104 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 54450 lbf
  • Static Radial Load 82125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 5.27 kg
Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4AQBCD dimension drawing
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Features

How Does 7021 ACD/HCP4AQBCD Bearing Reduce Friction?

7021 ACD/HCP4AQBCD Bearing features ceramic balls and a phenolic cage, significantly reducing friction during operation.
The 25° contact angle ensures smooth performance under angular loads, enhancing efficiency.
With a dynamic radial load capacity of 54450 lbf, it handles heavy loads while maintaining precision.
Its maximum speed of 16,250 rpm makes it suitable for high-speed applications.

Why Choose 7021 ACD/HCP4AQBCD Bearing for Precision Tasks?

7021 ACD/HCP4AQBCD Bearing is designed with a P4A tolerance class, ensuring high precision in demanding applications.
The heavy preload class D enhances stability, making it ideal for precision machinery.
Its chrome steel rings and ceramic balls provide durability and reduced wear.
The matched arrangement of 4 bearings ensures consistent performance under load.

Engineered for Precision: 7021 ACD/HCP4AQBCD Bearing

7021 ACD/HCP4AQBCD Bearing combines chrome steel rings with ceramic balls for superior performance.
The phenolic cage minimises friction, contributing to smoother operation.
With a temperature range of -30°C to 110°C, it performs reliably in various environments.
Its high-speed capability of 16,250 rpm makes it versatile for different applications.

Chrome Steel vs Ceramic Bearings: Strengths of 7021 ACD/HCP4AQBCD Bearing

7021 ACD/HCP4AQBCD Bearing uses ceramic balls for reduced friction and chrome steel rings for durability.
This combination ensures long service life and reliable performance under heavy loads.
The phenolic cage further enhances efficiency by minimising wear.
Its precision design makes it suitable for high-speed and high-load applications.

Application

Key Fields for 7021 ACD/HCP4AQBCD Bearing
In high-speed machine tools, 7021 ACD/HCP4AQBCD Bearing excels due to its ceramic balls and phenolic cage, reducing friction and heat buildup. The heavy preload ensures stability during precision machining operations.

Where Is 7021 ACD/HCP4AQBCD Bearing Used?
You’ll often find 7021 ACD/HCP4AQBCD Bearing in aerospace applications, such as helicopter rotor systems, where its angular contact design handles complex loads. The P4A tolerance class guarantees the precision needed for critical flight components.

Built for Heavy-Duty Use: 7021 ACD/HCP4AQBCD Bearing
This bearing is a go-to for industrial robots, particularly in articulated arms requiring smooth, precise movement. The matched set of four bearings ensures even load distribution during repetitive tasks.

Automotive vs Aerospace: Applications of 7021 ACD/HCP4AQBCD Bearing
In automotive testing rigs, 7021 ACD/HCP4AQBCD Bearing supports high-speed spindles, while in aerospace, it’s trusted for turbine shaft alignment. The chrome steel rings and ceramic balls offer durability in both environments.

Practical Applications of 7021 ACD/HCP4AQBCD Bearing
Medical imaging devices benefit from 7021 ACD/HCP4AQBCD Bearing’s quiet operation and minimal vibration. The open design allows for easy lubrication, extending service life in demanding hospital settings.

Q&A

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