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Super Precision Angular Contact Ball Bearings 71920 ACD/PA9ADT

Super Precision Angular Contact Ball Bearings 71920 ACD/PA9ADT

The 71920 ACD/PA9ADT 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 20768 lbf and operates smoothly at speeds up to 15000 RPM.

Its 25° contact angle and matched pair design (2 bearings << DT) provide excellent stability and accuracy under angular loads. The phenolic cage ensures durability and reduces friction during high-speed rotations. Preloaded for precision, this bearing is ideal for applications like machine tool spindles or high-performance motors. It works reliably in temperatures from -30°C to 110°C and comes pre-lubricated for easy installation. Weighing 1.6kg, it’s a robust choice for demanding industrial environments. Compliant with PA9A tolerance standards, it’s interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 71920 ACD/PA9ADT
  • 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 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • Contact Angle 25°
  • Tolerance Class PA9A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings << DT
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 20768 lbf
  • Static Radial Load 28125 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 1.6 kg
Super Precision Angular Contact Ball Bearings 71920 ACD/PA9ADT dimension drawing
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Features

How Is 71920 ACD/PA9ADT Bearing Engineered for Reliability?

71920 ACD/PA9ADT Bearing features a 25° contact angle, optimised for handling both radial and axial loads efficiently.
The chrome steel construction ensures durability and resistance to wear in high-speed applications.

With a dynamic radial load capacity of 20768 lbf, it performs reliably under demanding conditions.
Its phenolic cage maintains ball alignment, reducing friction and extending operational life.

The bearing’s matched arrangement of two bearings enhances stability and load distribution.
Lubrication is pre-applied, ensuring smooth operation right from installation.

Operating temperatures range from -30°C to 110°C, making it suitable for various environments.
Its precision design meets PA9A tolerance class, ensuring consistent performance.

Application

Industrial Uses of 71920 ACD/PA9ADT Bearing
71920 ACD/PA9ADT Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability for heavy cutting operations.

In automotive applications, 71920 ACD/PA9ADT Bearing supports high-speed components like turbochargers and transmission systems. Its phenolic cage offers smooth performance under varying temperatures and loads.

For robotics, 71920 ACD/PA9ADT Bearing is ideal for articulated arms requiring precise movement. The open seal design allows for easy lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71920 ACD/PA9ADT Bearing’s low vibration and high rigidity. The chrome steel construction ensures reliability in critical diagnostic equipment.

In aerospace, 71920 ACD/PA9ADT Bearing is used in flight control systems where consistent performance is essential. The PA9A tolerance class guarantees precision even under extreme conditions.

Q&A

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