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Super Precision Angular Contact Ball Bearings 71920 ACD/P4ADBA

Super Precision Angular Contact Ball Bearings 71920 ACD/P4ADBA

The 71920 ACD/P4ADBA is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched set of two bearings for balanced performance.

Designed for angular contact loads, it handles dynamic radial loads up to 20768 lbf and spins smoothly at speeds up to 15000 RPM. The phenolic cage ensures durability, while the open design allows for easy lubrication.

With an extra-light preload (Class A), this bearing offers precise operation, ideal for high-speed applications. Its P4A tolerance class guarantees exceptional accuracy.

Perfect for machine tools or precision spindles where reliability and speed are crucial. The set weighs 1.6kg and operates efficiently in temperatures from -30°C to 110°C. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71920 ACD/P4ADBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • 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 20768 lbf
  • Static Radial Load 28125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 1.6 kg
Super Precision Angular Contact Ball Bearings 71920 ACD/P4ADBA dimension drawing
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Features

Performance Features of 71920 ACD/P4ADBA Bearing

71920 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 and smooth operation under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and wear during high-speed rotation.
With a maximum speed of 15,000 rpm, it delivers reliable performance in precision machinery.

71920 ACD/P4ADBA Bearing operates efficiently in temperatures from -30°C to 110°C, suitable for varied environments.
Its extra light preload (Class A) ensures minimal vibration and noise during use.

The matched arrangement of two bearings (DB) enhances stability and load capacity.
Dynamic radial load reaches 20,768 lbf, making it ideal for demanding industrial applications.

Application

Key Fields for 71920 ACD/P4ADBA Bearing
71920 ACD/P4ADBA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The extra light preload makes it ideal for applications demanding minimal friction and smooth operation.

In aerospace components, 71920 ACD/P4ADBA Bearing handles radial and axial loads efficiently, thanks to its 25° contact angle. The matched arrangement of two bearings enhances stability in critical flight systems.

For robotics, 71920 ACD/P4ADBA Bearing’s phenolic cage reduces weight while maintaining durability in high-speed robotic arms. Its P4A tolerance class guarantees precision in automated manufacturing processes.

Medical imaging devices benefit from 71920 ACD/P4ADBA Bearing’s consistent performance under tight tolerances. The chrome steel construction ensures long-term reliability in sensitive diagnostic equipment.

Q&A

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