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Super Precision Angular Contact Ball Bearings 7021 ACD/P4A

Super Precision Angular Contact Ball Bearings 7021 ACD/P4A

The 7021 ACD/P4A 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 20340 lbf and operates smoothly at speeds up to 12000 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and low friction. The open design allows for easy lubrication, ensuring long-lasting performance in temperatures from -30°C to 110°C.

This bearing is ideal for high-precision applications like machine tools or spindle systems, where accuracy and reliability are key. Its P4 tolerance class ensures top-tier performance for demanding tasks.

Weighing 1.59kg, it’s a robust choice for industrial use. Compatible with SKF bearings, it’s a versatile option for replacements or upgrades.

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Product Parameters

  • Part Number 7021 ACD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.01mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 20340 lbf
  • Static Radial Load 20925 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 1.59 kg
  • Price（$） 326.286
Super Precision Angular Contact Ball Bearings 7021 ACD/P4A dimension drawing
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Features

Performance Features of 7021 ACD/P4A Bearing

7021 ACD/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under high radial loads.

The phenolic cage in 7021 ACD/P4A Bearing maintains ball alignment, reducing friction and noise during operation.
With a maximum speed of 12,000 rpm, it delivers reliable performance in high-speed applications.

7021 ACD/P4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its precision P4 tolerance class ensures consistent performance in demanding conditions.

Application

Industrial Uses of 7021 ACD/P4A Bearing
7021 ACD/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it suitable for long operational cycles.

In automotive applications, 7021 ACD/P4A Bearing supports high-speed components like turbochargers and transmission systems. Its P4 tolerance class provides the precision needed for smooth performance under demanding conditions.

For automation systems, 7021 ACD/P4A Bearing excels in robotic arms and CNC machinery, thanks to its balanced load distribution. The open seal design allows for easy lubrication, extending service life in continuous-use environments.

Medical imaging devices benefit from 7021 ACD/P4A Bearing’s reliability and low vibration. The chrome steel construction ensures durability in sensitive equipment where consistent performance is critical.

In consumer electronics, 7021 ACD/P4A Bearing can be found in high-end printers and precision instruments. Its compact size and high-speed capability make it a versatile choice for various applications.

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