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Super Precision Angular Contact Ball Bearings 71948 ACD/P4ADBD

Super Precision Angular Contact Ball Bearings 71948 ACD/P4ADBD

The 71948 ACD/P4ADBD is a super precision angular contact ball bearing with a 240mm bore and 320mm outer diameter, crafted from durable chrome steel. Its 25° contact angle and heavy preload ensure stable performance under high radial loads up to 78975 lbf.

This matched set of two bearings (DB arrangement) spins smoothly at speeds up to 7500 RPM, thanks to its phenolic cage and lubricated design. The open seal allows for easy maintenance, while the P4A tolerance class guarantees precision.

Ideal for high-precision applications like machine tool spindles or industrial gearboxes, it operates reliably in temperatures from -30°C to 110°C. Weighing 17kg, it’s robust yet manageable for its size.

Interchangeable with SKF bearings, this model offers a dependable solution for demanding angular contact scenarios. Its 31 balls (25.4mm each) ensure even load distribution for long-lasting performance.

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Product Parameters

  • Part Number 71948 ACD/P4ADBD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 320 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 76 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 25.4 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 Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 78975 lbf
  • Static Radial Load 137250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 17 kg
Super Precision Angular Contact Ball Bearings 71948 ACD/P4ADBD dimension drawing
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Features

Performance Features of 71948 ACD/P4ADBD Bearing

71948 ACD/P4ADBD 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-performance settings.

Constructed from chrome steel, 71948 ACD/P4ADBD Bearing offers excellent durability under dynamic radial loads up to 78,975 lbf.
Its phenolic cage maintains ball alignment, reducing friction and wear during operation.

71948 ACD/P4ADBD Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
With a maximum speed of 7,500 rpm, it delivers reliable performance in demanding conditions.

The heavy preload class D enhances rigidity, making it suitable for precision tasks.
Its open design simplifies maintenance while ensuring consistent lubrication.

Weighing 17 kg, 71948 ACD/P4ADBD Bearing is robust yet designed for easy handling.
The P4A tolerance class guarantees high precision and smooth operation.

Application

Industrial Uses of 71948 ACD/P4ADBD Bearing
71948 ACD/P4ADBD Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance class make it suitable for applications demanding tight control.

Where Is 71948 ACD/P4ADBD Bearing Used?
In aerospace systems, 71948 ACD/P4ADBD Bearing supports components like turbine shafts, handling both radial and axial loads efficiently. Its phenolic cage reduces friction, ideal for high-speed operations.

Built for Heavy-Duty Use: 71948 ACD/P4ADBD Bearing
71948 ACD/P4ADBD Bearing excels in industrial gearboxes, where its chrome steel construction withstands significant dynamic loads. The matched arrangement enhances stability in demanding environments.

Automotive vs Aerospace: Applications of 71948 ACD/P4ADBD Bearing
In automotive testing equipment, 71948 ACD/P4ADBD Bearing provides reliable performance under rigorous conditions. For aerospace, its precision and durability ensure smooth operation in critical flight components.

Perfect Fit for Automation: 71948 ACD/P4ADBD Bearing
71948 ACD/P4ADBD Bearing is a go-to choice for robotic arms, offering smooth motion and long service life. The open design allows for easy lubrication, maintaining performance in continuous use.

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