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Super Precision Angular Contact Ball Bearings 7021 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings 7021 CDGA/HCP4A

The 7021 CDGA/HCP4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from chrome steel for durability. Its 15° contact angle and ceramic balls ensure smooth, high-speed operation up to 16,000 RPM.

With an extra light preload (Class A), it handles radial loads up to 21510 lbf, making it suitable for precision applications. The open design and phenolic cage allow for easy lubrication and long service life.

This bearing operates in temperatures from -30°C to 110°C and comes in a set of three for universal matching (back-to-back, face-to-face, or tandem). Ideal for high-precision machinery like CNC spindles or aerospace equipment.

Weighing 1.32kg, it meets P4A tolerance standards for exceptional accuracy. Interchangeable with SKF bearings, it’s a reliable choice for demanding industrial uses.

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Product Parameters

  • Part Number 7021 CDGA/HCP4A
  • 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 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 21510 lbf
  • Static Radial Load 21712 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.32 kg
  • Price（$） 321.822
Super Precision Angular Contact Ball Bearings 7021 CDGA/HCP4A dimension drawing
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Features

How Is 7021 CDGA/HCP4A Bearing Engineered for Reliability?

7021 CDGA/HCP4A Bearing features a 15° contact angle, optimised for handling combined radial and axial loads with precision.
Its chrome steel rings and ceramic balls reduce friction, enhancing durability and performance.

The phenolic cage ensures smooth operation, even at high speeds up to 16,000 rpm.
With a dynamic radial load capacity of 21510 lbf, it delivers consistent reliability in demanding applications.

Designed for extra light preload, 7021 CDGA/HCP4A Bearing maintains accuracy in precision machinery.
Its open design allows for easy lubrication, ensuring long service life.

Application

Industrial Uses of 7021 CDGA/HCP4A Bearing
7021 CDGA/HCP4A Bearing is commonly used in high-speed machine tools, where its precision and ceramic balls reduce friction for smoother operation. The open design and phenolic cage make it suitable for environments requiring minimal maintenance.

In automotive applications, 7021 CDGA/HCP4A Bearing supports components like electric motors and transmissions, thanks to its angular contact design. The extra-light preload ensures consistent performance under varying loads.

For robotics, 7021 CDGA/HCP4A Bearing’s high-speed capability and P4A tolerance class make it ideal for precise movements in robotic arms. Its chrome steel rings and ceramic balls provide durability in continuous operation.

Medical imaging devices benefit from 7021 CDGA/HCP4A Bearing’s low vibration and high accuracy. The temperature range and lubrication options ensure reliability in critical healthcare equipment.

In automation systems, 7021 CDGA/HCP4A Bearing is a reliable choice for conveyor belts and assembly lines. Its universal matching feature allows for flexible configurations in various industrial setups.

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