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Super Precision Angular Contact Ball Bearings 71928 ACD/P4AQBCD

Super Precision Angular Contact Ball Bearings 71928 ACD/P4AQBCD

The 71928 ACD/P4AQBCD is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from high-quality chrome steel. It measures 140mm by 190mm by 96mm, offering a compact yet robust design.

With a 25° contact angle and heavy preload, it handles radial loads up to 53550 lbf and spins smoothly at speeds up to 11000 RPM. The phenolic cage ensures durability and quiet operation.

This bearing comes in a matched set of four, ideal for applications requiring high precision, such as machine tools or spindle systems. Its open design allows for easy lubrication and maintenance.

Weighing 6.6kg, it’s built for stability and performance in temperatures ranging from -30°C to 110°C. Compliant with P4A tolerance standards, it’s a reliable choice for demanding industrial environments.

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Product Parameters

  • Part Number 71928 ACD/P4AQBCD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 96 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 15.875 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • 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 53550 lbf
  • Static Radial Load 99000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 6.6 kg
Super Precision Angular Contact Ball Bearings 71928 ACD/P4AQBCD dimension drawing
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Features

Performance Features of 71928 ACD/P4AQBCD Bearing

71928 ACD/P4AQBCD Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 53550 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 11,000 rpm.
With a matched arrangement of four bearings, it provides stability for heavy-duty tasks.

71928 ACD/P4AQBCD Bearing operates efficiently in temperatures from -30°C to 110°C.
Its tight tolerances (P4A class) ensure reliable performance in demanding environments.

The open design simplifies lubrication, reducing maintenance needs.
This bearing is ideal for applications requiring high precision and long service life.

Application

Industrial Uses of 71928 ACD/P4AQBCD Bearing
71928 ACD/P4AQBCD Bearing is commonly used in high-precision machine tools, where its angular contact design handles both radial and axial loads efficiently. The phenolic cage ensures smooth operation even at high speeds, making it suitable for demanding industrial environments.

In automotive applications, 71928 ACD/P4AQBCD Bearing supports components like wheel hubs and transmissions, where its heavy preload enhances stability. The metric sizing and P4A tolerance class make it a reliable choice for performance vehicles.

For automation systems, 71928 ACD/P4AQBCD Bearing’s matched arrangement of four bearings provides excellent rigidity in robotic arms. Its chrome steel construction ensures durability in continuous operation, reducing maintenance needs.

Medical imaging devices benefit from 71928 ACD/P4AQBCD Bearing’s precision and low friction. The open design allows for easy lubrication, ensuring consistent performance in critical healthcare equipment.

In consumer electronics, 71928 ACD/P4AQBCD Bearing is found in high-end printers and scanners, where its quiet operation and reliability are key. The temperature range of -30°C to 110°C ensures performance in various conditions.

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