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Super Precision Angular Contact Ball Bearings 71928 ACD/P4ADBA

Super Precision Angular Contact Ball Bearings 71928 ACD/P4ADBA

The 71928 ACD/P4ADBA is a super precision angular contact ball bearing, measuring 140mm by 190mm by 48mm. Made from chrome steel, it offers excellent durability and performance for high-speed applications.

With a 25° contact angle, it handles both radial and axial loads efficiently, supporting up to 32850 lbf dynamically. It spins smoothly at speeds up to 11000 RPM, making it ideal for precision machinery.

The open design and phenolic cage ensure easy maintenance and long service life. Its extra light preload (Class A) provides consistent performance in matched pairs (DB arrangement).

Suitable for applications like machine tool spindles or high-speed motors, it operates in temperatures from -30°C to 110°C. Weighing 3.3kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards for precision engineering.

Interchangeable with SKF bearings, it’s a reliable choice for replacements or upgrades. The lubricated design reduces friction, ensuring smooth operation over time.

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Product Parameters

  • Part Number 71928 ACD/P4ADBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 48 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 15.875 mm
  • Ball Qty 29
  • 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 32850 lbf
  • Static Radial Load 49500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 3.3 kg
Super Precision Angular Contact Ball Bearings 71928 ACD/P4ADBA dimension drawing
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Features

Performance Features of 71928 ACD/P4ADBA Bearing

71928 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 for smoother operation.

The matched arrangement of two bearings provides extra stability, ideal for high-precision tasks.
With a dynamic radial load capacity of 32,850 lbf, it handles demanding conditions effortlessly.

71928 ACD/P4ADBA Bearing operates at speeds up to 11,000 rpm, maintaining performance in a wide temperature range.
Its P4A tolerance class guarantees precision, making it suitable for critical applications.

Application

Industrial Uses of 71928 ACD/P4ADBA Bearing
71928 ACD/P4ADBA 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.

In automotive applications, 71928 ACD/P4ADBA Bearing supports high-speed components like turbochargers and transmission systems. Its extra light preload helps reduce friction, improving overall efficiency.

For medical imaging devices, 71928 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 and robotics benefit from 71928 ACD/P4ADBA Bearing’s ability to handle combined loads. Its open design allows for easy lubrication, extending service life in robotic arms and CNC machines.

In consumer electronics, 71928 ACD/P4ADBA Bearing is found in high-end printers and precision instruments. The 25° contact angle provides smooth operation, reducing noise in household devices.

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