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Super Precision Angular Contact Ball Bearings S71920 ACD/P4ATBTC

Super Precision Angular Contact Ball Bearings S71920 ACD/P4ATBTC

The S71920 ACD/P4ATBTC is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 27900 lbf and operates smoothly at speeds up to 16250 RPM.

Its sealed design and grease lubrication ensure low maintenance, while the phenolic cage offers quiet, long-lasting performance. The 25° contact angle and moderate preload provide excellent stability for high-precision applications.

This matched set of three bearings (arranged > TBT) is ideal for machine tools or spindle systems requiring tight tolerances. It works reliably in temperatures from -30°C to 110°C.

Weighing 2.44kg, it’s a robust choice for industrial settings. Compliant with P4A tolerance class, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number S71920 ACD/P4ATBTC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 60 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • 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 27900 lbf
  • Static Radial Load 42750 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 2.44 kg
Super Precision Angular Contact Ball Bearings S71920 ACD/P4ATBTC dimension drawing
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Features

Why Choose S71920 ACD/P4ATBTC Bearing for Precision Tasks?

S71920 ACD/P4ATBTC Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability and consistent performance under dynamic radial loads up to 27900 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing speed capabilities up to 16,250 rpm.
With a sealed design and grease lubrication, it operates reliably in temperatures ranging from -30°C to 110°C.

The matched arrangement of three bearings provides balanced load distribution, ideal for demanding setups.
Its P4A tolerance class guarantees exceptional accuracy, making it suitable for precision engineering tasks.

Application

Essential Roles of S71920 ACD/P4ATBTC Bearing
S71920 ACD/P4ATBTC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction keeps contaminants out, extending service life in demanding workshop conditions.

In aerospace applications, S71920 ACD/P4ATBTC Bearing handles both radial and axial loads in turbine assemblies. Its phenolic cage offers lightweight stability, crucial for components where every gram matters.

For robotics, S71920 ACD/P4ATBTC Bearing’s matched set configuration provides smooth motion in articulated arms. The moderate preload reduces vibration, making it ideal for repetitive precision tasks.

Medical imaging devices benefit from S71920 ACD/P4ATBTC Bearing’s P4A tolerance class, ensuring quiet operation in MRI scanners. The grease lubrication maintains performance across a wide temperature range.

In automotive testing equipment, S71920 ACD/P4ATBTC Bearing supports high-speed dynamometers. Its chrome steel construction withstands prolonged use while maintaining dimensional stability.

Q&A

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