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Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADBB

Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADBB

The 7021 ACD/P4ADBB is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. Its 25° contact angle efficiently manages both radial and axial loads, suitable for high-speed applications up to 16,000 RPM.

Designed as a matched pair (DB arrangement), it offers light preload for smooth operation and reduced vibration. The open seal allows easy lubrication, while the phenolic cage ensures quiet performance.

With a dynamic radial load capacity of 33,300 lbf, it’s built for demanding machinery like spindles or CNC equipment. The P4A tolerance class guarantees exceptional precision.

Weighing 3.18kg, this bearing operates reliably in temperatures from -30°C to 110°C. Interchangeable with SKF models, it’s a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 7021 ACD/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 25°
  • 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 33300 lbf
  • Static Radial Load 41850 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 ACD/P4ADBB dimension drawing
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Features

Performance Features of 7021 ACD/P4ADBB Bearing

7021 ACD/P4ADBB Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 33,300 lbf.

The matched arrangement of two bearings provides stability and balanced performance in high-speed operations.
With a maximum speed of 16,000 rpm, it delivers smooth and efficient operation.

Phenolic cage material reduces friction and enhances longevity in demanding conditions.
The P4A tolerance class guarantees high precision, making it suitable for critical applications.

Light preload class B ensures minimal vibration and noise during operation.
Its open design allows for easy lubrication, maintaining consistent performance over time.

Application

Key Fields for 7021 ACD/P4ADBB Bearing
In machine tools, 7021 ACD/P4ADBB Bearing excels with its angular contact design, handling both radial and axial loads smoothly. The phenolic cage reduces friction, making it ideal for high-speed spindle applications.

Where Is 7021 ACD/P4ADBB Bearing Used?
You’ll often spot 7021 ACD/P4ADBB Bearing in precision robotics, where its light preload ensures accurate movement in robotic arms. The matched arrangement also boosts stability in automated assembly lines.

Built for Heavy-Duty Use: 7021 ACD/P4ADBB Bearing
This bearing shines in industrial pumps, thanks to its chrome steel construction and high dynamic load capacity. Its open design allows for easy lubrication, extending service life in demanding conditions.

Automotive vs Aerospace: Applications of 7021 ACD/P4ADBB Bearing
In automotive transmissions, 7021 ACD/P4ADBB Bearing handles high-speed rotations reliably. For aerospace, its P4A tolerance class ensures precision in navigation systems and flight controls.

Perfect Fit for Automation: 7021 ACD/P4ADBB Bearing
7021 ACD/P4ADBB Bearing is a go-to for CNC machines, where its 25° contact angle optimises performance. The lubricated design minimises wear, even during prolonged operation.

Q&A

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