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Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADGB

Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADGB

The 71938 ACD/P4ADGB is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 58500 lbf and operates smoothly at speeds up to 11000 RPM.

With a 25° contact angle and universal matching design, it offers flexibility for back-to-back, face-to-face, or tandem arrangements. The phenolic cage ensures durability and reduces friction during high-speed rotations.

This bearing is ideal for precision applications like machine tool spindles or high-performance industrial equipment. Its P4A tolerance class guarantees exceptional accuracy and reliability. Weighing 8.7kg, it’s robust yet efficient for demanding environments.

Designed for temperatures between -30°C and 110°C, it’s a dependable choice for various industrial settings. Interchangeable with SKF bearings, it simplifies replacements and maintenance.

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Product Parameters

  • Part Number 71938 ACD/P4ADGB
  • 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 Light / Class B
  • 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（$） 2518.551
Super Precision Angular Contact Ball Bearings 71938 ACD/P4ADGB dimension drawing
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Features

Performance Features of 71938 ACD/P4ADGB Bearing

71938 ACD/P4ADGB Bearing is crafted with a 25° contact angle, ideal for handling combined radial and axial loads.
The chrome steel rings and balls enhance durability, while the phenolic cage ensures smooth operation at high speeds.

With a dynamic radial load capacity of 58,500 lbf, it performs reliably in demanding applications.
Its universal matching design allows flexible arrangements like back-to-back or face-to-face configurations.

The P4A tolerance class guarantees precision, making it suitable for high-accuracy machinery.
Operating at speeds up to 11,000 rpm, it balances performance and longevity effortlessly.

Its open design simplifies lubrication, maintaining efficiency across a temperature range of -30°C to 110°C.
Weighing 8.7 kg, it offers robust performance without compromising on precision.

Application

Common Applications of 71938 ACD/P4ADGB Bearing
71938 ACD/P4ADGB Bearing is widely 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/P4ADGB Bearing supports critical components like turbine shafts, thanks to its phenolic cage and chrome steel construction. Its light preload and P4A tolerance class ensure smooth operation under demanding conditions.

For automation systems, 71938 ACD/P4ADGB Bearing excels in robotic arms and CNC machinery, where its high-speed capability and durability are key. The open seal type simplifies lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71938 ACD/P4ADGB Bearing’s precision and reliability, particularly in MRI machines and CT scanners. The consistent performance and low noise make it ideal for sensitive environments.

In electric motors, 71938 ACD/P4ADGB Bearing handles high rotational speeds while maintaining stability. Its metric sizing and interchangeable design with SKF bearings offer versatility across various motor types.

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