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Super Precision Angular Contact Ball Bearings 71928 ACD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71928 ACD/P4ATBTC

The 71928 ACD/P4ATBTC is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, measuring 72mm in width. Made from high-quality chrome steel, it’s designed for angular contact loads and comes in a matched set of three bearings.

With a 25° contact angle and moderate preload, it handles radial loads up to 43875 lbf and spins smoothly at speeds up to 11000 RPM. The open design and phenolic cage ensure durability and easy maintenance.

This bearing is ideal for high-precision applications like machine tool spindles or industrial gearboxes. It operates reliably in temperatures from -30°C to 110°C and is interchangeable with SKF bearings.

Weighing 4.95kg, it’s a robust choice for demanding environments. Compliant with P4A tolerance standards, it offers consistent performance under heavy loads.

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Product Parameters

  • Part Number 71928 ACD/P4ATBTC
  • 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 72 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 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 43875 lbf
  • Static Radial Load 75375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 4.95 kg
Super Precision Angular Contact Ball Bearings 71928 ACD/P4ATBTC dimension drawing
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Features

Performance Features of 71928 ACD/P4ATBTC Bearing

71928 ACD/P4ATBTC Bearing is designed with a 25° contact angle, providing excellent radial and axial load capacity.

Its chrome steel rings and balls ensure durability and resistance to wear in high-speed applications.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.

With a maximum speed of 11,000 rpm, it offers reliable operation in precision tasks.

Application

Industrial Uses of 71928 ACD/P4ATBTC Bearing
71928 ACD/P4ATBTC Bearing is commonly used in high-precision machine tools, where its moderate preload and angular contact design ensure accurate spindle rotation. The matched arrangement of three bearings provides stability in demanding industrial environments.

Where Is 71928 ACD/P4ATBTC Bearing Used?
In automotive applications, 71928 ACD/P4ATBTC Bearing supports high-speed components like turbochargers and transmission systems. Its phenolic cage and chrome steel construction offer durability under continuous operation.

Built for Heavy-Duty Use: 71928 ACD/P4ATBTC Bearing
For robotics and automation, 71928 ACD/P4ATBTC Bearing excels in robotic arms and CNC machines due to its precise tolerance class and dynamic load capacity. The open design allows for easy lubrication and maintenance.

Medical vs Industrial: Where 71928 ACD/P4ATBTC Bearing Excels
In medical imaging devices, 71928 ACD/P4ATBTC Bearing provides smooth and quiet operation, essential for diagnostic accuracy. Its temperature range and material quality make it suitable for both medical and industrial uses.

Practical Applications of 71928 ACD/P4ATBTC Bearing
71928 ACD/P4ATBTC Bearing is ideal for aerospace applications, such as helicopter rotor systems, where reliability and precision are critical. The metric sizing ensures compatibility with international standards.

Q&A

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