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Super Precision Angular Contact Ball Bearings 71948 ACD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71948 ACD/P4ATBTC

The 71948 ACD/P4ATBTC is a super precision angular contact ball bearing with a 240mm bore and 320mm outer diameter, designed for high-performance applications. Its 25° contact angle and moderate preload ensure smooth operation under heavy radial loads up to 103950 lbf.

Made from chrome steel with a phenolic cage, it offers durability and can handle speeds up to 7500 RPM. The open design allows for easy lubrication, extending its service life in demanding conditions.

This bearing comes in a matched set of three (TBT arrangement), providing stability for precision machinery like spindles or CNC equipment. It operates efficiently in temperatures from -30°C to 110°C.

Weighing 25.5kg, it’s a robust choice for industrial use. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for reliable replacements. Ideal for applications requiring high accuracy and load capacity.

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Product Parameters

  • Part Number 71948 ACD/P4ATBTC
  • 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 114 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 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 103950 lbf
  • Static Radial Load 205875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 25.5 kg
Super Precision Angular Contact Ball Bearings 71948 ACD/P4ATBTC dimension drawing
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Features

Performance Features of 71948 ACD/P4ATBTC Bearing

71948 ACD/P4ATBTC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to dynamic radial loads up to 103,950 lbf.

The phenolic cage ensures smooth operation and reduces friction, even at high speeds of 7,500 rpm.

With a matched arrangement of three bearings, it offers enhanced stability and precision in demanding conditions.

Application

Industrial Uses of 71948 ACD/P4ATBTC Bearing
71948 ACD/P4ATBTC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of three bearings provides stability in heavy cutting operations.

In aerospace applications, 71948 ACD/P4ATBTC Bearing supports critical components like turbine shafts, thanks to its moderate preload and high dynamic load capacity. The phenolic cage offers lightweight durability in high-speed environments.

For automation systems, 71948 ACD/P4ATBTC Bearing is ideal for robotic arms, where its P4A tolerance class guarantees smooth, precise movement. The chrome steel construction ensures long service life even in continuous operation.

Medical imaging devices benefit from 71948 ACD/P4ATBTC Bearing’s low vibration and high rigidity, essential for clear scan results. The open design allows for easy lubrication maintenance in sterile environments.

In wind turbine gearboxes, 71948 ACD/P4ATBTC Bearing handles both radial and axial loads efficiently. Its temperature range makes it suitable for outdoor installations in varying climates.

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