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Super Precision Angular Contact Ball Bearings S71920 ACD/P4AQBCC

Super Precision Angular Contact Ball Bearings S71920 ACD/P4AQBCC

The S71920 ACD/P4AQBCC is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched set of four bearings for balanced performance.

This sealed unit handles dynamic radial loads up to 33975 lbf and spins smoothly at speeds up to 16250 RPM. Its phenolic cage ensures quiet operation and durability under moderate preload conditions.

The bearing operates efficiently in temperatures from -30°C to 110°C, with grease lubrication for easy maintenance. Its P4A tolerance class guarantees high precision for demanding applications.

Ideal for machine tools or high-speed spindles where accuracy is crucial. Weighing 3.25kg, it offers robust performance in a compact size. Interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number S71920 ACD/P4AQBCC
  • 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 80 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 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • 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 33975 lbf
  • Static Radial Load 56250 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 3.25 kg
Super Precision Angular Contact Ball Bearings S71920 ACD/P4AQBCC dimension drawing
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Features

Performance Features of S71920 ACD/P4AQBCC Bearing

S71920 ACD/P4AQBCC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 33,975 lbf.

The phenolic cage ensures smooth operation, reducing friction and wear even at high speeds.
With a maximum speed of 16,250 rpm, it balances performance and reliability in precision tasks.

Sealed for protection, S71920 ACD/P4AQBCC Bearing operates efficiently in various environments.
Its moderate preload (Class C) enhances stability, making it suitable for matched arrangements.

The P4A tolerance class guarantees high precision, meeting demanding industrial standards.
Grease lubrication further extends its service life, reducing maintenance needs.

Application

Industrial Uses of S71920 ACD/P4AQBCC Bearing
S71920 ACD/P4AQBCC Bearing is commonly used in high-precision machine tools, where its moderate preload and sealed design ensure consistent performance. The angular contact design handles both radial and axial loads efficiently.

In robotics, S71920 ACD/P4AQBCC Bearing supports articulated arms, providing smooth motion and durability. Its phenolic cage reduces friction, making it ideal for repetitive movements.

For aerospace applications, S71920 ACD/P4AQBCC Bearing’s P4A tolerance class meets strict precision requirements. The chrome steel construction ensures reliability in critical components like landing gear systems.

Where Is S71920 ACD/P4AQBCC Bearing Used?
S71920 ACD/P4AQBCC Bearing is found in medical imaging devices, where its sealed design prevents contamination. The high-speed capability makes it suitable for rotating components in MRI machines.

In automation systems, S71920 ACD/P4AQBCC Bearing ensures precise positioning in CNC machinery. The matched arrangement of four bearings enhances stability under heavy loads.

Built for Heavy-Duty Use: S71920 ACD/P4AQBCC Bearing
S71920 ACD/P4AQBCC Bearing excels in industrial pumps, handling high radial loads with ease. The grease lubrication extends service life even in demanding environments.

For electric motors, S71920 ACD/P4AQBCC Bearing’s 25° contact angle improves efficiency. Its temperature range allows reliable operation in both hot and cold conditions.

Automotive vs Aerospace: Applications of S71920 ACD/P4AQBCC Bearing
In automotive transmissions, S71920 ACD/P4AQBCC Bearing supports high-speed shafts, reducing vibration. The sealed design keeps lubricant in and contaminants out.

For aircraft engines, S71920 ACD/P4AQBCC Bearing’s precision ensures smooth operation at extreme speeds. The phenolic cage withstands high temperatures without degrading.

Q&A

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