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Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADGA

Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADGA

The 7021 ACD/P4ADGA is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-grade chrome steel. It handles radial loads up to 33,300 lbf and operates smoothly at speeds up to 16,000 RPM.

Its 25° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face. The phenolic cage ensures quiet, long-lasting performance, even in temperatures from -30°C to 110°C.

This bearing comes pre-lubricated and meets P4A tolerance standards for precision applications. Ideal for machine tools or high-speed spindles where accuracy and reliability are key.

Weighing 3.18kg, it’s part of a matched set of two bearings, offering versatility for demanding setups. Interchangeable with SKF models for easy replacement.

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Product Parameters

  • Part Number 7021 ACD/P4ADGA
  • 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 52 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 Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 33300 lbf
  • Static Radial Load 41850 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 3.18 kg
Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADGA dimension drawing
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Features

Performance Features of 7021 ACD/P4ADGA Bearing

7021 ACD/P4ADGA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 33,300 lbf, it handles demanding conditions with ease.

The P4A tolerance class guarantees high precision, making it suitable for critical applications.

Application

Essential Roles of 7021 ACD/P4ADGA Bearing
7021 ACD/P4ADGA Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load distribution. The universal matching design allows flexible arrangements, making it suitable for complex spindle configurations.

In aerospace applications, 7021 ACD/P4ADGA Bearing supports critical components like turbine shafts, thanks to its extra-light preload and P4A tolerance class. Its phenolic cage reduces friction, enhancing performance at high speeds.

For automation systems, 7021 ACD/P4ADGA Bearing excels in robotic arms and CNC machinery, where consistent precision is key. The chrome steel construction provides durability, while the open seal design simplifies lubrication maintenance.

Medical imaging devices benefit from 7021 ACD/P4ADGA Bearing’s smooth operation and low vibration. Its temperature stability ensures reliable performance in sensitive environments like MRI scanners.

In electric vehicle drivetrains, 7021 ACD/P4ADGA Bearing handles angular loads efficiently, contributing to quieter and more efficient motor operation. The metric sizing ensures compatibility with global automotive standards.

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