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Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADBA

Super Precision Angular Contact Ball Bearings 7021 ACD/P4ADBA

The 7021 ACD/P4ADBA is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It’s designed for angular contact loads and comes in a matched pair for extra stability.

This bearing handles radial loads up to 33300 lbf and spins smoothly at speeds up to 16000 RPM. Its phenolic cage ensures durability, while the open design allows for easy lubrication.

With a 25° contact angle and extra-light preload, it offers precise performance in demanding applications. The P4A tolerance class guarantees high accuracy for critical machinery.

Ideal for use in machine tools or high-speed spindles where precision is key. The matched pair arrangement (DB) ensures balanced load distribution. Weighing 3.18kg, it’s robust yet manageable for its size.

Operates reliably in temperatures from -30°C to 110°C. Compliant with industry standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

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

Performance Features of 7021 ACD/P4ADBA Bearing

7021 ACD/P4ADBA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

The matched arrangement of two bearings provides extra light preload, enhancing precision in high-speed operations.
With a maximum speed of 16,000 rpm, it delivers reliable performance in demanding conditions.

7021 ACD/P4ADBA Bearing’s dynamic radial load capacity of 33,300 lbf ensures stability under heavy loads.
Its P4A tolerance class guarantees high precision, making it suitable for critical applications.

The open seal design allows for easy lubrication, maintaining smooth operation over time.
Operating between -30°C to 110°C, it performs consistently in varied temperature environments.

Application

Key Fields for 7021 ACD/P4ADBA Bearing
7021 ACD/P4ADBA Bearing is widely 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.

In automotive applications, 7021 ACD/P4ADBA Bearing supports high-speed components like turbochargers and transmission systems. Its extra light preload helps maintain smooth operation under varying loads.

For medical imaging devices, 7021 ACD/P4ADBA Bearing’s phenolic cage and chrome steel construction offer reliable performance. The P4A tolerance class ensures minimal vibration, crucial for sensitive equipment.

Automation systems benefit from 7021 ACD/P4ADBA Bearing’s ability to handle both radial and axial loads. Its lubricated design reduces maintenance needs in robotic arms and CNC machinery.

In aerospace applications, 7021 ACD/P4ADBA Bearing’s temperature resistance and high-speed capability make it suitable for flight control systems. The metric sizing ensures compatibility with international standards.

Q&A

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