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Super Precision Angular Contact Ball Bearings 7021 CD/P4ADBA

Super Precision Angular Contact Ball Bearings 7021 CD/P4ADBA

The 7021 CD/P4ADBA 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 DB arrangement provide excellent stability for angular loads, while the phenolic cage ensures quiet, long-lasting performance. The bearings come pre-lubricated for immediate use.

Designed for high-precision applications, this set of two bearings works well in temperatures from -30°C to 110°C. Ideal for machine tools or spindle drives where accuracy is crucial.

Weighing 3.18kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards for reliable performance. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 7021 CD/P4ADBA
  • 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 Extra light / Class A
  • 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/P4ADBA dimension drawing
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Features

Performance Features of 7021 CD/P4ADBA Bearing

7021 CD/P4ADBA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 35100 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 16,000 rpm.
Precision-matched as a duplex set, it offers extra light preload for consistent performance.

With a temperature range of -30°C to 110°C, 7021 CD/P4ADBA Bearing adapts to various operating conditions.
Its open design simplifies lubrication, maintaining efficiency over extended periods.

Application

Industrial Uses of 7021 CD/P4ADBA 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 in demanding industrial environments.

Where Is 7021 CD/P4ADBA Bearing Used?
You’ll find it in automotive transmissions, where its extra light preload reduces friction and improves efficiency. The phenolic cage material helps maintain performance even at higher speeds.

Built for Heavy-Duty Use: 7021 CD/P4ADBA Bearing
It’s a reliable choice for robotics, particularly in articulated arms requiring smooth, precise movement. The chrome steel construction offers durability under radial and angular loads.

Medical vs Industrial: Where 7021 CD/P4ADBA Bearing Excels
In medical imaging devices, this bearing’s P4A tolerance class ensures quiet, vibration-free operation. Industrial applications like CNC machines benefit from its high dynamic load capacity.

Practical Applications of 7021 CD/P4ADBA Bearing
For automation systems, 7021 CD/P4ADBA Bearing supports high-speed operations with minimal maintenance. Its open design allows for easy lubrication, extending service life.

Q&A

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