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Super Precision Angular Contact Ball Bearings 7021 CD/P4ADBB

Super Precision Angular Contact Ball Bearings 7021 CD/P4ADBB

The 7021 CD/P4ADBB 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 35100 lbf and operates smoothly at speeds up to 16000 RPM.

Its 15° contact angle and matched arrangement (2 bearings DB) provide excellent stability under angular loads. The phenolic cage ensures quiet, long-lasting performance, while the open design allows easy lubrication.

This bearing is ideal for high-precision applications like machine tool spindles or robotics, where accuracy and reliability are key. It’s interchangeable with SKF bearings, making replacements straightforward.

Weighing 3.18kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it performs reliably in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 7021 CD/P4ADBB
  • 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 52 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 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • 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 35100 lbf
  • Static Radial Load 43425 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 3.18 kg
Super Precision Angular Contact Ball Bearings 7021 CD/P4ADBB dimension drawing
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Features

Performance Features of 7021 CD/P4ADBB Bearing

7021 CD/P4ADBB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 35100 lbf.

Its phenolic cage ensures smooth operation at high speeds, reaching up to 16,000 rpm.
The matched arrangement of two bearings provides stability and precision in demanding conditions.

With a temperature range of -30°C to 110°C, 7021 CD/P4ADBB Bearing performs reliably in various environments.
The light preload (Class B) reduces friction, extending the bearing’s service life.

The open design allows for easy lubrication, maintaining optimal performance over time.
Precision tolerances (P4A) ensure consistent operation, making it suitable for high-accuracy applications.

Application

Industrial Uses of 7021 CD/P4ADBB Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability for heavy cutting operations.

In robotics, 7021 CD/P4ADBB Bearing supports articulated arms that require smooth, low-friction movement. Its phenolic cage reduces weight while maintaining strength, ideal for repetitive motions.

For aerospace applications, 7021 CD/P4ADBB Bearing handles radial and axial loads in aircraft components like landing gear systems. The P4A tolerance class guarantees consistent performance under demanding conditions.

Automotive enthusiasts appreciate 7021 CD/P4ADBB Bearing in performance gearboxes, where its light preload reduces power loss. The chrome steel construction withstands high RPMs without compromising durability.

Medical imaging devices benefit from 7021 CD/P4ADBB Bearing’s precision in rotating components like CT scanner gantries. Its open design allows for easy lubrication, extending service life in critical environments.

Q&A

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