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Super Precision Angular Contact Ball Bearings 7021 ACDGA/HCP4A

Super Precision Angular Contact Ball Bearings 7021 ACDGA/HCP4A

The 7021 ACDGA/HCP4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. Its 25° contact angle and ceramic balls ensure smooth operation under radial loads up to 20340 lbf.

Designed for extra light preload, this bearing reaches speeds of 16000 RPM, making it suitable for high-performance applications. The phenolic cage adds durability while keeping weight low at 1.32kg.

Its open design allows easy lubrication, and it operates reliably in temperatures from -30°C to 110°C. The P4A tolerance class guarantees exceptional precision.

Ideal for machine tools or spindle assemblies, this bearing can be arranged back-to-back, face-to-face, or tandem. It’s interchangeable with SKF models for convenient replacements.

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Product Parameters

  • Part Number 7021 ACDGA/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 25°
  • 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 20340 lbf
  • Static Radial Load 20925 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.32 kg
Super Precision Angular Contact Ball Bearings 7021 ACDGA/HCP4A dimension drawing
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Features

Performance Features of 7021 ACDGA/HCP4A Bearing

7021 ACDGA/HCP4A Bearing features a 25° contact angle, optimised for angular contact loads.
Its chrome steel rings and ceramic balls ensure high precision and durability in demanding applications.

The phenolic cage maintains ball alignment, reducing friction and wear.
With a dynamic radial load capacity of 20,340 lbf, it handles heavy loads efficiently.

7021 ACDGA/HCP4A Bearing operates at speeds up to 16,000 rpm, balancing performance and longevity.
Its extra-light preload (Class A) ensures smooth operation in precision machinery.

The open design allows easy lubrication, enhancing maintenance efficiency.
It functions reliably in temperatures ranging from -30°C to 110°C.

7021 ACDGA/HCP4A Bearing’s universal matching capability supports various configurations.
This makes it versatile for back-to-back, face-to-face, or tandem arrangements.

Application

Industrial Uses of 7021 ACDGA/HCP4A Bearing
7021 ACDGA/HCP4A Bearing is commonly used in high-speed machine tools, where its precision and angular contact design ensure accurate performance. The ceramic balls reduce friction, making it ideal for applications requiring smooth rotation.

In robotics, 7021 ACDGA/HCP4A Bearing supports articulated arms, providing stability and durability. Its phenolic cage offers lightweight strength, which is essential for repetitive movements.

For aerospace components, 7021 ACDGA/HCP4A Bearing handles radial and axial loads efficiently. The P4A tolerance class ensures reliability in critical systems like flight control mechanisms.

Medical imaging devices benefit from 7021 ACDGA/HCP4A Bearing’s low friction and high-speed capabilities. The chrome steel rings and ceramic balls contribute to long-lasting performance in sensitive equipment.

Automotive testing equipment often relies on 7021 ACDGA/HCP4A Bearing for its precision and load capacity. The extra-light preload helps maintain accuracy in dynamic testing scenarios.

Q&A

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