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Super Precision Angular Contact Ball Bearings 7021 ACD/P4AQBCB

Super Precision Angular Contact Ball Bearings 7021 ACD/P4AQBCB

The 7021 ACD/P4AQBCB is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 54450 lbf and operates smoothly at speeds up to 16000 RPM.

Its 25° contact angle and matched set of four bearings provide excellent stability for angular loads. The phenolic cage ensures quiet operation and long service life.

This bearing is lubricated for easy maintenance and works in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or industrial pumps.

Weighing 6.37kg, it’s a robust choice for demanding environments. Compliant with P4A tolerance standards for reliable performance.

Interchangeable with SKF bearings, it offers a practical replacement option. Its open design allows for straightforward inspection and relubrication.

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Product Parameters

  • Part Number 7021 ACD/P4AQBCB
  • 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 104 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 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 54450 lbf
  • Static Radial Load 82125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 6.37 kg
Super Precision Angular Contact Ball Bearings 7021 ACD/P4AQBCB dimension drawing
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Features

Performance Features of 7021 ACD/P4AQBCB Bearing

7021 ACD/P4AQBCB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 54450 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 16,000 rpm.
Precision-matching of four bearings in a set (QBC arrangement) provides consistent performance.

With a light preload (Class B), 7021 ACD/P4AQBCB Bearing reduces vibration and improves accuracy.
Its open design allows for easy lubrication, extending service life in various conditions.

The P4A tolerance class ensures high precision, making it suitable for demanding applications.
Operating between -30°C to 110°C, it maintains reliability across a wide temperature range.

Application

Essential Roles of 7021 ACD/P4AQBCB Bearing
In high-precision machine tools, 7021 ACD/P4AQBCB Bearing ensures smooth spindle rotation, thanks to its 25° contact angle and P4A tolerance class. The matched set of four bearings provides excellent stability for demanding operations.

Where Is 7021 ACD/P4AQBCB Bearing Used?
You’ll often find 7021 ACD/P4AQBCB Bearing in aerospace applications, where its light preload and phenolic cage handle high speeds effortlessly. Its chrome steel construction also makes it reliable for long-term use.

Built for Heavy-Duty Use: 7021 ACD/P4AQBCB Bearing
This bearing excels in industrial robotics, supporting articulated arms with its dynamic radial load capacity. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 7021 ACD/P4AQBCB Bearing
In automotive systems, 7021 ACD/P4AQBCB Bearing works well in high-performance gearboxes, while its precision makes it ideal for aircraft control mechanisms. The metric sizing ensures compatibility across industries.

Practical Applications of 7021 ACD/P4AQBCB Bearing
For medical imaging devices, 7021 ACD/P4AQBCB Bearing offers quiet and precise movement. Its temperature range suits both indoor and outdoor equipment, making it versatile for various settings.

Q&A

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