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Super Precision Angular Contact Ball Bearings 71944 ACD/P4ADBA

Super Precision Angular Contact Ball Bearings 71944 ACD/P4ADBA

The 71944 ACD/P4ADBA is a super precision angular contact ball bearing with a 220mm bore and 300mm outer diameter, crafted from durable chrome steel. Its 25° contact angle and matched pair design (DB arrangement) ensure smooth handling of combined radial and axial loads.

This bearing can manage dynamic radial loads up to 76050 lbf and spins efficiently at speeds up to 11000 RPM. The phenolic cage offers quiet operation, while the extra light preload (Class A) enhances precision.

Its open design simplifies lubrication, and it operates reliably in temperatures from -30°C to 110°C. The P4A tolerance class guarantees high accuracy for demanding applications.

Weighing 13.2kg, this set of two bearings is ideal for high-precision machinery like CNC spindles or aerospace equipment. It’s interchangeable with SKF models for easy replacement.

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Product Parameters

  • Part Number 71944 ACD/P4ADBA
  • 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 Extra light / Class A
  • 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/P4ADBA dimension drawing
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Features

Performance Features of 71944 ACD/P4ADBA Bearing

71944 ACD/P4ADBA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

The bearing set includes two matched bearings in a DB arrangement, providing extra light preload for precision performance.
With a dynamic radial load capacity of 76050 lbf, it handles demanding conditions reliably.

71944 ACD/P4ADBA Bearing operates at speeds up to 11,000 rpm, balancing speed and stability.
Its P4A tolerance class ensures high precision, making it suitable for critical applications.

The open design allows for easy lubrication, extending the bearing’s service life.
Weighing 13.2 kg, it maintains a robust yet manageable structure for industrial use.

Application

Key Fields for 71944 ACD/P4ADBA Bearing
71944 ACD/P4ADBA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability for demanding operations like milling and grinding.

In aerospace applications, 71944 ACD/P4ADBA Bearing handles radial and axial loads in turbine systems, thanks to its phenolic cage and chrome steel construction. Its extra-light preload also minimises friction at high speeds.

For robotics, 71944 ACD/P4ADBA Bearing offers smooth motion control in articulated arms, with its P4A tolerance class maintaining precision over long periods. The open design allows for easy lubrication in continuous-use scenarios.

Medical imaging devices benefit from 71944 ACD/P4ADBA Bearing’s low vibration, ensuring clear scans in MRI and CT machines. The temperature range suits both clinical and laboratory environments.

In automation systems, 71944 ACD/P4ADBA Bearing supports linear actuators and CNC equipment, where its dynamic load capacity ensures reliable performance. The metric sizing simplifies integration with European and Asian machinery.

Q&A

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