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Super Precision Angular Contact Ball Bearings 71811 ACD/P4DBB

Super Precision Angular Contact Ball Bearings 71811 ACD/P4DBB

The 71811 ACD/P4DBB is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 3510 lbf and spins smoothly at speeds up to 34,000 RPM. Its phenolic cage ensures durability and quiet operation, even under high-speed conditions.

The open design allows for easy lubrication, while the P4 tolerance class guarantees precise performance. Ideal for applications like machine tool spindles or high-precision equipment where accuracy is key.

Weighing just 0.16kg, it’s lightweight yet robust. Suitable for temperatures from -30°C to 110°C, making it versatile for various industrial uses.

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Product Parameters

  • Part Number 71811 ACD/P4DBB
  • 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 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • 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/P4DBB dimension drawing
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Features

How Is 71811 ACD/P4DBB Bearing Engineered for Reliability?

71811 ACD/P4DBB Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.

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

With a dynamic radial load capacity of 3510 lbf, it performs reliably in high-speed applications.

The P4 tolerance class guarantees precision, making it suitable for demanding tasks.

Application

Practical Applications of 71811 ACD/P4DBB Bearing
71811 ACD/P4DBB 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 in demanding industrial environments.

In automotive applications, 71811 ACD/P4DBB Bearing supports components like wheel hubs and transmissions, handling both radial and axial loads efficiently. Its light preload and P4 tolerance class make it suitable for performance vehicles.

For automation systems, 71811 ACD/P4DBB Bearing is ideal for robotic arms and CNC machines, offering smooth motion control. The phenolic cage reduces friction, enhancing its longevity in continuous operation.

Medical imaging devices benefit from 71811 ACD/P4DBB Bearing’s precision and reliability, ensuring consistent performance in critical diagnostics. The chrome steel construction also resists wear in high-speed scenarios.

In consumer electronics, 71811 ACD/P4DBB Bearing can be found in high-end printers and scanners, where quiet operation is essential. Its lubricated design minimises maintenance needs for long-term use.

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