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Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4A

Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4A

The 7021 ACD/HCP4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and ceramic balls for smooth operation.

This bearing handles radial loads up to 20340 lbf and reaches speeds of 14000 RPM, making it suitable for high-performance applications. Its phenolic cage ensures durability and reduced friction.

With a P4 tolerance class, it offers exceptional accuracy for precision machinery. The open design allows for easy lubrication and maintenance.

Ideal for use in machine tools or high-speed spindles, this bearing operates in temperatures from -30°C to 110°C. Weighing 1.32kg, it balances strength and precision for demanding tasks.

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Product Parameters

  • Part Number 7021 ACD/HCP4A
  • 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 Available
  • Preload Available
  • 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° to 110 °C
  • Max Speed 14000 rpm
  • Weight 1.32 kg
  • Price（$） 117.495
Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4A dimension drawing
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Features

Why Choose 7021 ACD/HCP4A Bearing for Precision Tasks?

7021 ACD/HCP4A Bearing features a 25° contact angle, ideal for handling combined radial and axial loads.
Its chrome steel rings and ceramic balls ensure high precision and durability in demanding applications.

With a dynamic radial load capacity of 20340 lbf, it performs reliably under heavy loads.
The phenolic cage maintains ball alignment, reducing friction and extending service life.

Operating at speeds up to 14,000 rpm, it balances speed and precision effortlessly.
Its P4 tolerance class guarantees consistent performance in high-precision machinery.

Application

Industrial Uses of 7021 ACD/HCP4A Bearing
7021 ACD/HCP4A Bearing is commonly used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load distribution. The ceramic balls reduce friction, making it ideal for high-speed spindle applications.

Where Is 7021 ACD/HCP4A Bearing Used?
You’ll often find 7021 ACD/HCP4A Bearing in aerospace components like helicopter gearboxes, thanks to its phenolic cage and P4 tolerance class. Its lightweight design and high-speed capability make it a reliable choice for demanding environments.

Built for Heavy-Duty Use: 7021 ACD/HCP4A Bearing
7021 ACD/HCP4A Bearing handles heavy loads in industrial pumps and compressors with ease. The chrome steel rings and ceramic balls provide durability, even in continuous operation.

Automotive vs Aerospace: Applications of 7021 ACD/HCP4A Bearing
In automotive systems, 7021 ACD/HCP4A Bearing supports high-performance transmissions, while in aerospace, it’s trusted for turbine engines. Its universal matching option adds versatility across industries.

Perfect Fit for Automation: 7021 ACD/HCP4A Bearing
7021 ACD/HCP4A Bearing is a go-to for robotic arms and CNC machines, where precision and speed are key. The open design allows for easy lubrication, ensuring long service life.

Q&A

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