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Super Precision Angular Contact Ball Bearings 71920 ACD/P4AQBCC

Super Precision Angular Contact Ball Bearings 71920 ACD/P4AQBCC

The 71920 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 handles radial loads up to 33975 lbf and operates smoothly at speeds up to 15000 RPM.

With a 25° contact angle and moderate preload, this bearing offers excellent stability for angular contact applications. The phenolic cage ensures durability and reduces friction during high-speed rotations.

This set includes four matched bearings (QBC arrangement), ideal for applications requiring precise alignment. Suitable for machine tools or spindle systems where accuracy is key.

Weighing 3.2kg, it’s built to last in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71920 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 Open
  • 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 Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 3.2 kg
Super Precision Angular Contact Ball Bearings 71920 ACD/P4AQBCC dimension drawing
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Features

Performance Features of 71920 ACD/P4AQBCC Bearing

71920 ACD/P4AQBCC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability under high dynamic radial loads of up to 33,975 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a maximum speed of 15,000 rpm, it delivers reliable performance in high-speed scenarios.

71920 ACD/P4AQBCC Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its precision P4A tolerance class guarantees consistent performance in demanding conditions.

The matched arrangement of four bearings ensures balanced load distribution.
Moderate preload (Class C) further enhances stability and reduces vibration.

Application

Super Precision Angular Contact Ball Bearings 71920 ACD/P4AQBCC are commonly used in high-speed machine tools, where their 25° contact angle ensures smooth operation under radial and axial loads. The matched arrangement of four bearings provides stability in demanding applications.

In aerospace components, 71920 ACD/P4AQBCC Bearings handle precise movements, such as in helicopter rotor systems, thanks to their P4A tolerance class. The phenolic cage material reduces friction, enhancing performance at high speeds.

For automation systems, 71920 ACD/P4AQBCC Bearings support robotic arms, where their moderate preload ensures accurate positioning. The chrome steel construction offers durability in continuous operation.

Medical imaging devices benefit from 71920 ACD/P4AQBCC Bearings’ precision, particularly in MRI machines where smooth rotation is essential. The lubricated design minimises maintenance needs.

In electric vehicle motors, 71920 ACD/P4AQBCC Bearings contribute to efficient power transmission, with their high dynamic load capacity handling demanding conditions. The metric sizing ensures compatibility with various motor designs.

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