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Super Precision Angular Contact Ball Bearings 71944 ACD/P4ADBD

Super Precision Angular Contact Ball Bearings 71944 ACD/P4ADBD

The 71944 ACD/P4ADBD is a super precision angular contact ball bearing with a 220mm bore and 300mm outer diameter, measuring 76mm in width. Made from high-quality chrome steel, it’s designed for heavy loads and high-speed operations.

With a 25° contact angle and heavy preload, it handles radial loads up to 76050 lbf and spins smoothly at 11000 RPM. The open design allows easy lubrication, while the phenolic cage ensures quiet and efficient performance.

This matched set of two bearings (DB arrangement) offers excellent stability for precision applications. Ideal for machine tools or high-performance industrial equipment where accuracy is key.

Weighing 13.2kg, it’s robust yet suitable for demanding environments. Compliant with P4A tolerance standards, it ensures reliable operation between -30°C and 110°C.

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Product Parameters

  • Part Number 71944 ACD/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 25°
  • 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 76050 lbf
  • Static Radial Load 128250 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 ACD/P4ADBD dimension drawing
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Features

Performance Features of 71944 ACD/P4ADBD Bearing

71944 ACD/P4ADBD Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 76050 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 11,000 rpm, it delivers smooth operation in precision settings.

71944 ACD/P4ADBD Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its heavy preload class D design ensures stability and reliability in demanding conditions.

The matched arrangement of two bearings provides balanced performance for complex applications.
Its precise P4A tolerance class guarantees consistent accuracy in high-speed operations.

Application

Industrial Uses of 71944 ACD/P4ADBD Bearing
71944 ACD/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 suitable for demanding industrial environments.

In aerospace applications, 71944 ACD/P4ADBD Bearing supports critical components like turbine shafts, thanks to its ability to handle both radial and axial loads. The matched arrangement of two bearings enhances stability during high-speed operations.

For automation systems, 71944 ACD/P4ADBD Bearing’s phenolic cage reduces friction, making it ideal for robotic arms and CNC machines. Its chrome steel construction ensures long-lasting performance even under continuous use.

Medical imaging devices benefit from 71944 ACD/P4ADBD Bearing’s precision, as it provides smooth and reliable rotation in MRI and CT scanners. The open seal design allows for easy lubrication, maintaining optimal performance over time.

Q&A

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