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Super Precision Angular Contact Ball Bearings 71944 CD/P4ADBD

Super Precision Angular Contact Ball Bearings 71944 CD/P4ADBD

The 71944 CD/P4ADBD is a super precision angular contact ball bearing with a 220mm bore and 300mm outer diameter, crafted from high-quality chrome steel. Its 15° contact angle and heavy preload ensure stable performance under radial loads up to 80550 lbf.

This matched set of two bearings (DB arrangement) spins smoothly at speeds up to 11000 RPM, thanks to its phenolic cage and lubricated design. The open seal allows for easy maintenance and cooling.

With a P4A tolerance class, it offers exceptional accuracy for demanding applications. Ideal for high-speed machinery like spindles or CNC equipment where precision is key.

Weighing 13.2kg, it’s robust yet manageable for its size. Operates reliably in temperatures from -30°C to 110°C, making it versatile for various industrial settings.

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Product Parameters

  • Part Number 71944 CD/P4ADBD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 220 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 300 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 76 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 29
  • 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 Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 80550 lbf
  • Static Radial Load 135000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 13.2 kg
Super Precision Angular Contact Ball Bearings 71944 CD/P4ADBD dimension drawing
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Features

Performance Features of 71944 CD/P4ADBD Bearing

71944 CD/P4ADBD Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to both dynamic and static radial loads, reaching 80550 lbf and 135000 lbf respectively.

The phenolic cage ensures smooth operation at high speeds, with a maximum of 11,000 rpm.

With a matched arrangement of 2 bearings and heavy preload, it offers enhanced stability in precision tasks.

Application

Industrial Uses of 71944 CD/P4ADBD Bearing
71944 CD/P4ADBD Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance class make it ideal for applications demanding minimal deflection.

In aerospace components, 71944 CD/P4ADBD Bearing supports critical systems like turbine shafts, thanks to its high dynamic radial load capacity. The matched arrangement of two bearings enhances stability in demanding flight conditions.

For robotics, 71944 CD/P4ADBD Bearing provides smooth motion in articulated arms, where its phenolic cage reduces friction. The 15° contact angle balances axial and radial loads effectively for precise movements.

Medical imaging devices benefit from 71944 CD/P4ADBD Bearing’s consistent performance, especially in rotating gantries. Its chrome steel construction ensures durability in sterile environments with frequent use.

In automotive testing equipment, 71944 CD/P4ADBD Bearing handles high-speed rotations reliably. The open design allows for easy lubrication, extending service life in rigorous testing scenarios.

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