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Super Precision Angular Contact Ball Bearings 71811 ACD/P4DGB

Super Precision Angular Contact Ball Bearings 71811 ACD/P4DGB

The 71811 ACD/P4DGB is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 3510 lbf and spins smoothly at speeds up to 34,000 RPM.

With a 25° contact angle and universal matching design, it offers flexibility for back-to-back, face-to-face, or tandem arrangements. The phenolic cage ensures quiet operation and long service life.

This bearing is preloaded for light use (Class B) and works well in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or high-speed motors.

Weighing just 0.16kg, it comes as a matched set of two bearings. Compliant with P4 tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71811 ACD/P4DGB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 18 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 3510 lbf
  • Static Radial Load 4590 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.16 kg
Super Precision Angular Contact Ball Bearings 71811 ACD/P4DGB dimension drawing
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Features

Performance Features of 71811 ACD/P4DGB Bearing

71811 ACD/P4DGB Bearing is designed with a 25° contact angle, providing excellent radial and axial load capacity.

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

With a dynamic radial load of 3510 lbf, it handles demanding applications with ease.

The P4 tolerance class guarantees high precision, making it ideal for super precision tasks.

Application

Essential Roles of 71811 ACD/P4DGB Bearing
71811 ACD/P4DGB Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The light preload and P4 tolerance class make it suitable for applications demanding minimal vibration.

In robotics, 71811 ACD/P4DGB Bearing supports articulated arms, providing smooth movement and long service life. Its universal matching feature allows flexible arrangement in complex mechanical systems.

For medical imaging devices, 71811 ACD/P4DGB Bearing’s phenolic cage and chrome steel construction offer reliable performance in sterile environments. The high-speed capability ensures consistent operation in critical diagnostic equipment.

Automotive applications benefit from 71811 ACD/P4DGB Bearing’s ability to handle combined loads in gearbox systems. The metric dimensions and interchangeable design simplify integration with existing components.

In aerospace, 71811 ACD/P4DGB Bearing’s lightweight and precision make it ideal for flight control systems. The temperature range ensures performance stability under varying operational conditions.

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