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Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBA

Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBA

The 71820 ACD/P4DBA is a super precision angular contact ball bearing with a 100mm bore and 125mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 7762 lbf and spins smoothly at speeds up to 15000 RPM. Its extra light preload ensures minimal friction, while the phenolic cage offers quiet operation.

The open design allows for easy lubrication, making maintenance straightforward. It operates reliably in temperatures from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or high-speed robotics. Weighing 0.62kg, it’s a robust yet lightweight solution for demanding environments. Compliant with P4 tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71820 ACD/P4DBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 34
  • Contact Angle 25°
  • Tolerance Class P4
  • 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 7762 lbf
  • Static Radial Load 12375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.62 kg
Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBA dimension drawing
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Features

Performance Features of 71820 ACD/P4DBA Bearing

71820 ACD/P4DBA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The matched arrangement of two bearings ensures stability and precision in high-speed operations.

Chrome steel rings and balls provide durability, while the phenolic cage reduces friction and wear.
With a dynamic radial load capacity of 7762 lbf, it handles demanding conditions reliably.

The extra light preload (Class A) enhances performance, making it suitable for precision tasks.
Its maximum speed of 15,000 rpm and temperature range of -30°C to 110°C ensure versatility.

Application

Industrial Uses of 71820 ACD/P4DBA Bearing
71820 ACD/P4DBA 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 under radial and axial loads.

In robotics, 71820 ACD/P4DBA Bearing supports articulated arms, offering smooth movement and low friction. Its phenolic cage reduces vibration, making it ideal for repetitive tasks.

For aerospace applications, 71820 ACD/P4DBA Bearing handles high-speed rotations in turbine systems. The P4 tolerance class guarantees consistent performance in demanding conditions.

Where Is 71820 ACD/P4DBA Bearing Used?
You’ll find 71820 ACD/P4DBA Bearing in CNC machines, where its extra-light preload enhances precision cutting. The chrome steel construction ensures long-lasting durability.

In medical imaging devices, 71820 ACD/P4DBA Bearing provides quiet and reliable operation. Its open design allows for easy lubrication, maintaining performance over time.

Built for Heavy-Duty Use: 71820 ACD/P4DBA Bearing
71820 ACD/P4DBA Bearing excels in industrial gearboxes, handling both radial and thrust loads effortlessly. The 25° contact angle optimises load distribution.

In automotive testing equipment, 71820 ACD/P4DBA Bearing ensures accurate measurements. Its high-speed capability makes it suitable for dynamic testing environments.

Automotive vs Aerospace: Applications of 71820 ACD/P4DBA Bearing
In automotive systems, 71820 ACD/P4DBA Bearing supports high-performance transmissions, where precision is key. The metric sizing fits seamlessly into European and Asian designs.

For aerospace, 71820 ACD/P4DBA Bearing is used in flight control systems, offering reliability under extreme conditions. The phenolic cage reduces weight without compromising strength.

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