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Super Precision Angular Contact Ball Bearings 71956 ACD/P4ADBB

Super Precision Angular Contact Ball Bearings 71956 ACD/P4ADBB

The 71956 ACD/P4ADBB is a super precision angular contact ball bearing with a 280mm bore and 380mm outer diameter, crafted from high-grade chrome steel. It handles radial loads up to 99450 lbf and operates smoothly at speeds up to 7500 RPM.

Its 25° contact angle and matched arrangement (2 bearings DB) provide excellent stability for angular loads. The phenolic cage ensures quiet operation and durability, even under light preload conditions.

This bearing is ideal for high-precision applications like machine tool spindles or high-speed robotics. It works reliably in temperatures from -30°C to 110°C and comes pre-lubricated for easy installation.

Weighing 25.8kg, it’s a robust choice for heavy-duty machinery. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for seamless replacements.

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Product Parameters

  • Part Number 71956 ACD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 280 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 380 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 92 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 31
  • 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 99450 lbf
  • Static Radial Load 194625 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 25.8 kg
Super Precision Angular Contact Ball Bearings 71956 ACD/P4ADBB dimension drawing
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Features

Performance Features of 71956 ACD/P4ADBB Bearing

71956 ACD/P4ADBB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under high radial loads.

The matched arrangement of two bearings provides stability and precision in demanding operations.
With a dynamic radial load capacity of 99450 lbf, it handles heavy-duty applications with ease.

71956 ACD/P4ADBB Bearing operates smoothly at speeds up to 7,500 rpm, maintaining performance.
Its phenolic cage reduces friction and noise, making it suitable for precision machinery.

The P4A tolerance class ensures high accuracy, essential for super precision tasks.
Its wide temperature range from -30°C to 110°C allows for versatile use in various environments.

Application

Common Applications of 71956 ACD/P4ADBB Bearing
71956 ACD/P4ADBB 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, making it ideal for heavy cutting operations.

In aerospace applications, 71956 ACD/P4ADBB Bearing handles radial and axial loads in turbine systems, thanks to its chrome steel construction. The light preload also reduces friction, extending service life in demanding conditions.

For robotics, 71956 ACD/P4ADBB Bearing’s phenolic cage offers quiet operation, essential for precision movements in automated arms. Its P4A tolerance class guarantees consistent performance in repetitive tasks.

Medical imaging devices benefit from 71956 ACD/P4ADBB Bearing’s low vibration, ensuring clear scans without interference. The open seal design allows for easy lubrication, maintaining smooth operation over time.

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