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Super Precision Angular Contact Ball Bearings 71920 ACD/P4ALDGA

Super Precision Angular Contact Ball Bearings 71920 ACD/P4ALDGA

The 71920 ACD/P4ALDGA 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 20768 lbf and operates smoothly at speeds up to 15000 RPM.

Its 25° contact angle and extra-light preload ensure precise performance, while the phenolic cage reduces friction. The open design allows for easy lubrication, extending its lifespan in demanding conditions.

This bearing is part of a universal matched set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tool spindles or aerospace components.

Weighing 1.6kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for reliable replacements. Works well in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 71920 ACD/P4ALDGA
  • 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 P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • 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/P4ALDGA dimension drawing
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Features

Performance Features of 71920 ACD/P4ALDGA Bearing

71920 ACD/P4ALDGA Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability while maintaining high-speed performance up to 15,000 rpm.

The phenolic cage minimises friction, enhancing smooth operation under dynamic radial loads of 20768 lbf.
Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.

With extra light preload (Class A), 71920 ACD/P4ALDGA Bearing delivers consistent accuracy in demanding conditions.
Its P4A tolerance class guarantees superior precision for high-performance machinery.

The open design facilitates easy lubrication, extending service life in temperatures from -30°C to 110°C.
Weighing just 1.6 kg, it balances strength and efficiency without compromising on quality.

Application

Common Applications of 71920 ACD/P4ALDGA Bearing
71920 ACD/P4ALDGA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The extra light preload makes it ideal for applications demanding minimal friction and smooth operation.

In robotics, 71920 ACD/P4ALDGA Bearing supports articulated arms, providing stability and precision in repetitive movements. Its universal matching feature allows for flexible configurations in complex assemblies.

For aerospace components, 71920 ACD/P4ALDGA Bearing’s phenolic cage and chrome steel construction offer reliability under varying temperatures. The P4A tolerance class ensures consistent performance in critical flight systems.

Where Is 71920 ACD/P4ALDGA Bearing Used?
You’ll often find 71920 ACD/P4ALDGA Bearing in CNC machining centres, where its high-speed capability and precision are essential. The open seal design allows for efficient lubrication, extending service life.

In medical imaging devices, 71920 ACD/P4ALDGA Bearing provides smooth, quiet operation for sensitive diagnostics. Its low vibration characteristics are crucial for maintaining image clarity in MRI and CT scanners.

Built for Heavy-Duty Use: 71920 ACD/P4ALDGA Bearing
71920 ACD/P4ALDGA Bearing handles heavy radial and axial loads in industrial gearboxes, ensuring reliable power transmission. The matched set arrangement simplifies installation and maintenance.

For automotive testing equipment, 71920 ACD/P4ALDGA Bearing’s high dynamic load capacity supports rigorous performance evaluations. Its temperature range suits both indoor and outdoor testing environments.

Automotive vs Aerospace: Applications of 71920 ACD/P4ALDGA Bearing
In automotive turbochargers, 71920 ACD/P4ALDGA Bearing withstands high rotational speeds while maintaining precision. The angular contact design efficiently manages thrust loads.

For aerospace actuators, 71920 ACD/P4ALDGA Bearing’s lightweight construction and high-speed performance are key. The universal matching feature allows for custom setups in compact spaces.

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