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Super Precision Angular Contact Ball Bearings 7021 ACD/P4AQBCA

Super Precision Angular Contact Ball Bearings 7021 ACD/P4AQBCA

The 7021 ACD/P4AQBCA is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 54450 lbf and operates smoothly at speeds up to 16000 RPM.

With a 25° contact angle and open design, it offers excellent performance in high-speed applications. The phenolic cage ensures durability and reduces friction for smoother rotation.

This bearing comes in a matched set of four, preloaded for extra light performance, making it ideal for precision machinery like spindles or CNC equipment. It works well in temperatures from -30°C to 110°C.

Weighing 6.37kg, it’s robust yet designed for precision. Compliant with P4A tolerance standards, it’s a reliable choice for demanding industrial applications.

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Product Parameters

  • Part Number 7021 ACD/P4AQBCA
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 54450 lbf
  • Static Radial Load 82125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 6.37 kg
Super Precision Angular Contact Ball Bearings 7021 ACD/P4AQBCA dimension drawing
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Features

How Does 7021 ACD/P4AQBCA Bearing Achieve Super Precision?

7021 ACD/P4AQBCA Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 54,450 lbf, it handles demanding conditions reliably.
The P4A tolerance class guarantees exceptional accuracy for precision machinery.

Designed for speeds up to 16,000 rpm, it maintains performance in high-speed operations.
The matched arrangement of four bearings ensures consistent load distribution and smooth operation.

Application

Industrial Uses of 7021 ACD/P4AQBCA Bearing
The 7021 ACD/P4AQBCA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. Its phenolic cage offers smooth operation at high speeds, making it ideal for CNC applications.

In automotive systems, 7021 ACD/P4AQBCA Bearing supports gearbox components, handling both radial and axial loads efficiently. The extra light preload enhances performance in high-speed driving conditions.

For robotics, 7021 ACD/P4AQBCA Bearing provides reliable motion control in articulated arms, thanks to its P4A tolerance class. The matched set arrangement ensures consistent performance across multiple axes.

Medical imaging devices benefit from 7021 ACD/P4AQBCA Bearing’s low vibration and high precision. Its chrome steel construction ensures durability in demanding healthcare environments.

In aerospace applications, 7021 ACD/P4AQBCA Bearing excels in flight control systems, where its temperature stability and load capacity are critical. The open design allows for easy lubrication maintenance.

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