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Super Precision Angular Contact Ball Bearings 71930 CD/P4ADBA

Super Precision Angular Contact Ball Bearings 71930 CD/P4ADBA

The 71930 CD/P4ADBA is a super precision angular contact ball bearing with a 150mm bore and 210mm outer diameter, crafted from durable chrome steel. It measures 150mm×210mm×56mm, making it a compact yet robust choice for high-precision applications.

This bearing handles radial loads up to 41,850 lbf and spins smoothly at speeds up to 11,000 RPM. Its 15° contact angle and extra light preload ensure smooth operation under angular loads.

The open design allows easy lubrication, while the phenolic cage enhances durability. It comes as a matched set of two bearings (DB arrangement), ideal for paired installations.

Suitable for machine tools or high-speed spindles where precision is key. Compliant with P4A tolerance class for reliable performance. Weighing 5kg, it balances strength and precision.

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Product Parameters

  • Part Number 71930 CD/P4ADBA
  • 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 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 41850 lbf
  • Static Radial Load 58500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 5 kg
  • Price（$） 1636.65
Super Precision Angular Contact Ball Bearings 71930 CD/P4ADBA dimension drawing
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Features

Performance Features of 71930 CD/P4ADBA Bearing

71930 CD/P4ADBA Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.

Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 41,850 lbf, it handles demanding conditions reliably.

The extra light preload (Class A) enhances performance in high-speed operations up to 11,000 rpm.

Application

Industrial Uses of 71930 CD/P4ADBA Bearing
71930 CD/P4ADBA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The extra light preload makes it suitable for applications demanding minimal friction and high-speed performance.

In aerospace components, 71930 CD/P4ADBA Bearing provides reliable support for rotor assemblies and landing gear systems. Its phenolic cage material offers stability under varying temperatures and loads.

For automation equipment, 71930 CD/P4ADBA Bearing enhances the precision of robotic arms and CNC machines. The matched arrangement of two bearings improves load distribution and operational smoothness.

Medical imaging devices benefit from 71930 CD/P4ADBA Bearing’s consistent performance and low vibration. The chrome steel construction ensures durability in critical healthcare applications.

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