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Super Precision Angular Contact Ball Bearings 71932 ACD/P4QBCA

Super Precision Angular Contact Ball Bearings 71932 ACD/P4QBCA

The 71932 ACD/P4QBCA is a super precision angular contact ball bearing with a 280mm bore and 380mm outer diameter, designed for high accuracy applications. Its 15° contact angle and extra light preload ensure smooth operation under radial loads up to 73125 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, and it works in temperatures from -30°C to 110°C.

This bearing comes in a matched set of four (QBC arrangement), making it ideal for machine tools or spindles where precision is key. Weighing 10.8kg, it’s robust yet manageable for its size. Compliant with P4 tolerance class for reliable performance.

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Product Parameters

  • Part Number 71932 ACD/P4QBCA
  • 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 112 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 19.05 mm
  • Ball Qty 29
  • Contact Angle 15°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 73125 lbf
  • Static Radial Load 137250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 10.8 kg
Super Precision Angular Contact Ball Bearings 71932 ACD/P4QBCA dimension drawing
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Features

Performance Features of 71932 ACD/P4QBCA Bearing

71932 ACD/P4QBCA Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls provide strong resistance to both dynamic and static radial loads.

The phenolic cage ensures smooth operation, reducing friction and wear.
With a maximum speed of 7,500 rpm, it maintains performance in high-speed conditions.

71932 ACD/P4QBCA Bearing’s matched arrangement of four bearings enhances stability and load capacity.
Its extra light preload (Class A) ensures minimal friction while maintaining precision.

The open seal design allows for easy lubrication, extending the bearing’s service life.
It operates efficiently within a temperature range of -30°C to 110°C, suitable for various environments.

Application

Key Fields for 71932 ACD/P4QBCA Bearing
71932 ACD/P4QBCA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of four bearings provides stability in demanding machining operations.

In aerospace applications, 71932 ACD/P4QBCA Bearing supports critical components like turbine shafts, thanks to its extra light preload and P4 tolerance class. The phenolic cage reduces friction, enhancing performance at high speeds.

For automation systems, 71932 ACD/P4QBCA Bearing is a reliable choice for robotic arms, offering smooth movement under radial loads. Its chrome steel construction ensures durability in continuous operation.

Medical imaging devices benefit from 71932 ACD/P4QBCA Bearing’s precision, particularly in MRI machines where consistent rotation is essential. The lubricated design minimises maintenance needs.

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