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Super Precision Angular Contact Ball Bearings 71944 ACD/P4AQBTA

Super Precision Angular Contact Ball Bearings 71944 ACD/P4AQBTA

The 71944 ACD/P4AQBTA is a super precision angular contact ball bearing with a 220mm bore and 300mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 124425 lbf and operates smoothly at speeds up to 11000 RPM.

With a 25° contact angle and open design, it offers excellent performance in high-speed applications. The phenolic cage ensures durability and reduced friction, while the extra light preload (Class A) enhances precision.

This bearing comes in a matched set of four, ideal for applications requiring tight tolerances, such as machine tool spindles or high-precision equipment. It works well in temperatures from -30°C to 110°C.

Weighing 26.4kg, it’s a robust choice for heavy-duty use. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 71944 ACD/P4AQBTA
  • 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 152 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 4 bearings <>>> QBT
  • Number Of Bearings In Matched Set 4
  • 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 124425 lbf
  • Static Radial Load 256500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 26.4 kg
Super Precision Angular Contact Ball Bearings 71944 ACD/P4AQBTA dimension drawing
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Features

Performance Features of 71944 ACD/P4AQBTA Bearing

71944 ACD/P4AQBTA 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 124425 lbf.

The phenolic cage in 71944 ACD/P4AQBTA Bearing maintains ball alignment, reducing friction and wear.
With a maximum speed of 11,000 rpm, it delivers smooth and efficient performance.

71944 ACD/P4AQBTA Bearing operates reliably in temperatures ranging from -30°C to 110°C.
Its precision P4A tolerance class ensures consistent performance in demanding conditions.

The matched arrangement of four bearings provides extra light preload for enhanced stability.
This design reduces vibration and improves overall system accuracy.

Application

Key Fields for 71944 ACD/P4AQBTA Bearing
71944 ACD/P4AQBTA Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate spindle rotation. The matched set of four bearings provides excellent stability for heavy cutting operations.

In aerospace applications, 71944 ACD/P4AQBTA Bearing supports critical components like turbine shafts, thanks to its phenolic cage and chrome steel construction. Its extra-light preload helps maintain precision under extreme conditions.

For robotics, 71944 ACD/P4AQBTA Bearing is ideal for articulated arms requiring smooth, low-friction movement. The P4A tolerance class guarantees consistent performance in repetitive tasks.

Medical imaging systems benefit from 71944 ACD/P4AQBTA Bearing’s ability to handle both radial and axial loads quietly. Its lubricated design ensures long service life in sensitive environments.

Q&A

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