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Super Precision Angular Contact Ball Bearings 71920 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 71920 ACDGA/P4A

The 71920 ACDGA/P4A 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 is designed for angular contact loads, handling up to 12870 lbf dynamically.

With a maximum speed of 15000 RPM, this bearing operates smoothly in temperatures ranging from -30°C to 110°C. Its open design and phenolic cage ensure durability and easy maintenance.

This bearing is part of a matched set of two, suitable for universal matching in back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tools or spindle drives.

Weighing 0.8kg, it meets P4A tolerance standards for exceptional accuracy. Interchangeable with SKF bearings, it’s a reliable choice for demanding industrial uses.

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Product Parameters

  • Part Number 71920 ACDGA/P4A
  • 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 20 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 No
  • 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 12870 lbf
  • Static Radial Load 14175 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.8 kg
  • Price（$） 347.85
Super Precision Angular Contact Ball Bearings 71920 ACDGA/P4A dimension drawing
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Features

Performance Features of 71920 ACDGA/P4A Bearing

71920 ACDGA/P4A Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability and resistance to wear under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a dynamic radial load capacity of 12870 lbf, it handles demanding conditions reliably.

71920 ACDGA/P4A Bearing operates efficiently at speeds up to 15,000 rpm, balancing performance and longevity.
Its extra light preload (Class A) ensures minimal friction, ideal for high-precision machinery.

The open design allows for easy lubrication, maintaining optimal performance in temperatures from -30°C to 110°C.
This bearing is universally matchable, offering flexibility in back-to-back, face-to-face, or tandem arrangements.

Application

Industrial Uses of 71920 ACDGA/P4A Bearing
71920 ACDGA/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The extra light preload helps minimise friction, making it suitable for applications demanding fine finishes.

In automotive systems, 71920 ACDGA/P4A Bearing supports components like wheel hubs and transmissions, handling both radial and axial loads efficiently. Its phenolic cage offers good heat resistance, which is ideal for high-speed driving conditions.

For robotics, 71920 ACDGA/P4A Bearing provides smooth motion in articulated arms, thanks to its P4A tolerance class. The open design allows for easy lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71920 ACDGA/P4A Bearing’s precision, ensuring stable rotation in scanners and diagnostic equipment. The chrome steel construction adds durability while maintaining low noise levels.

In aerospace applications, 71920 ACDGA/P4A Bearing is trusted for its reliability in control systems and actuators. The universal matching feature allows flexible arrangement options, catering to complex assembly requirements.

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