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Super Precision Angular Contact Ball Bearings 71930 ACD/P4ALDT

Super Precision Angular Contact Ball Bearings 71930 ACD/P4ALDT

The 71930 ACD/P4ALDT is a super precision angular contact ball bearing with a 150mm bore and 210mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 40050 lbf and operates smoothly at speeds up to 11000 RPM.

With a 25° contact angle and matched arrangement of two bearings, it offers excellent stability for angular loads. The phenolic cage ensures quiet operation and long service life.

Preloaded for precision, this bearing is ideal for high-speed applications like machine tool spindles or aerospace components. It performs reliably in temperatures from -30°C to 110°C.

Weighing 5kg, it’s robust yet designed for precision. Compliant with P4A tolerance class, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 71930 ACD/P4ALDT
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 150 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 56 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 19.05 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • 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 40050 lbf
  • Static Radial Load 56250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 5 kg
Super Precision Angular Contact Ball Bearings 71930 ACD/P4ALDT dimension drawing
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Features

How Is 71930 ACD/P4ALDT Bearing Engineered for Reliability?

71930 ACD/P4ALDT Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
Its chrome steel rings and balls ensure high strength and durability under dynamic radial loads up to 40050 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 11,000 rpm, it delivers consistent performance in precision applications.

Preloaded and matched in a << DT arrangement, 71930 ACD/P4ALDT Bearing offers improved stability and accuracy. Its P4A tolerance class guarantees tight dimensional control for high-precision requirements.

Application

Super Precision Angular Contact Ball Bearings 71930 ACD/P4ALDT are commonly used in high-precision machine tools, where their 25° contact angle ensures accurate radial and axial load handling. The matched arrangement of two bearings enhances stability in demanding operations.

In aerospace applications, 71930 ACD/P4ALDT Bearings support critical components like turbine shafts, thanks to their high dynamic radial load capacity. The phenolic cage material provides lightweight durability, ideal for high-speed rotations.

For automation systems, these bearings are a reliable choice for robotic arms, where their P4A tolerance class guarantees smooth, precise movement. The open design allows for easy lubrication, extending service life in continuous-use environments.

Medical imaging devices benefit from 71930 ACD/P4ALDT Bearings’ chrome steel construction, which ensures consistent performance under strict hygiene standards. The low-temperature tolerance makes them suitable for sensitive diagnostic equipment.

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