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Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4ATBTA

Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4ATBTA

The 7021 ACD/HCP4ATBTA is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and comes in a set of three matched bearings for balanced performance.

This bearing handles radial loads up to 44775 lbf and reaches speeds of 16250 RPM, thanks to its ceramic balls and phenolic cage. Its extra-light preload ensures smooth operation with minimal friction.

The open design allows for easy lubrication, while the P4A tolerance class guarantees high precision. Ideal for machine tools or high-speed spindles where accuracy is key.

Weighing 3.95kg, it operates in temperatures from -30°C to 110°C. The set’s matched arrangement (TBT) provides stability under angular loads. Interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 7021 ACD/HCP4ATBTA
  • 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 78 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 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 44775 lbf
  • Static Radial Load 61875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 3.95 kg
  • Price（$） 965.475
Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4ATBTA dimension drawing
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Features

Performance Features of 7021 ACD/HCP4ATBTA Bearing

7021 ACD/HCP4ATBTA Bearing features a 25° contact angle, optimised for angular contact loads.
Its chrome steel rings and ceramic balls enhance durability and reduce friction.

The phenolic cage ensures smooth operation, even at high speeds up to 16,250 rpm.
With a dynamic radial load capacity of 44,775 lbf, it handles demanding applications with ease.

Precision-engineered to P4A tolerance class, 7021 ACD/HCP4ATBTA Bearing offers reliable performance.
Its matched arrangement of three bearings provides stability in complex setups.

The extra light preload design minimises friction, improving efficiency.
Operating between -30°C to 110°C, it adapts to various environmental conditions.

7021 ACD/HCP4ATBTA Bearing’s open design simplifies maintenance and inspection.
Its robust construction ensures long service life with minimal upkeep.

Application

Industrial Uses of 7021 ACD/HCP4ATBTA Bearing
This bearing is commonly used in high-precision machine tools, where its 25° contact angle helps manage combined radial and axial loads efficiently. The ceramic balls reduce friction, making it suitable for high-speed operations.

Where Is 7021 ACD/HCP4ATBTA Bearing Used?
You’ll often find it in automotive applications like high-performance gearboxes, where its extra light preload ensures smooth shifting. The phenolic cage adds durability under varying temperatures.

Built for Heavy-Duty Use: 7021 ACD/HCP4ATBTA Bearing
Its chrome steel rings and ceramic balls make it ideal for industrial robots handling repetitive tasks. The P4A tolerance class ensures consistent performance in demanding environments.

Medical vs Industrial: Where 7021 ACD/HCP4ATBTA Bearing Excels
In medical imaging devices, its precision is key for accurate positioning. Meanwhile, in industrial settings, the matched bearing arrangement supports heavy machinery with minimal vibration.

How Does 7021 ACD/HCP4ATBTA Bearing Support High-Speed Operations?
The lubricated design and ceramic balls allow it to reach speeds up to 16,250 rpm. This makes it a reliable choice for spindle applications in CNC machines.

Perfect Fit for Automation: 7021 ACD/HCP4ATBTA Bearing
Its low friction and high rigidity are great for robotic arms in assembly lines. The metric sizing ensures easy integration with European and Asian automation systems.

Key Fields for 7021 ACD/HCP4ATBTA Bearing
Aerospace applications benefit from its lightweight yet robust design, especially in actuator systems. The temperature range also suits various operational conditions.

What Makes 7021 ACD/HCP4ATBTA Bearing a Preferred Choice?
The combination of chrome steel rings and ceramic balls offers a balance of strength and speed. It’s a go-to for applications needing both precision and durability.

Q&A

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