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Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADGA

Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADGA

The 71938 ACD/P4ADGA is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, crafted from high-grade chrome steel. Its 25° contact angle and open design ensure smooth operation under angular loads.

With a dynamic radial load capacity of 58500 lbf, it handles high-speed applications up to 11000 RPM. The phenolic cage offers durability while keeping the bearing lightweight at 8.7kg.

This bearing comes in a matched set of two, allowing flexible arrangements like back-to-back or face-to-face. Ideal for precision machinery, spindles, or high-performance equipment where accuracy is key.

It operates efficiently in temperatures from -30°C to 110°C and is interchangeable with SKF models, making it a versatile choice for replacements or upgrades.

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Product Parameters

  • Part Number 71938 ACD/P4ADGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 66 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 58500 lbf
  • Static Radial Load 93375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 8.7 kg
  • Price（$） 1541.538
Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADGA dimension drawing
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Features

How Does 71938 ACD/P4ADGA Bearing Achieve Super Precision?

71938 ACD/P4ADGA Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 58,500 lbf, it handles demanding tasks with ease.
The extra-light preload (Class A) enhances accuracy, making it ideal for precision machinery.

71938 ACD/P4ADGA Bearing operates efficiently at speeds up to 11,000 rpm.
Its universal matching design allows flexible arrangements like back-to-back or tandem configurations.

The open seal type ensures easy lubrication, maintaining performance in temperatures from -30°C to 110°C.
Its P4A tolerance class guarantees consistent precision in high-speed applications.

Application

Industrial Uses of 71938 ACD/P4ADGA Bearing
71938 ACD/P4ADGA Bearing is commonly used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The universal matching design allows for flexible arrangements, making it suitable for complex setups.

In aerospace applications, 71938 ACD/P4ADGA Bearing supports components like turbine shafts, thanks to its extra-light preload and high-speed capabilities. The phenolic cage adds durability while reducing friction during operation.

For automation systems, 71938 ACD/P4ADGA Bearing excels in robotic arms and CNC machines, where its P4A tolerance class guarantees consistent performance. The chrome steel construction also ensures long service life in demanding environments.

Q&A

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