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Super Precision Angular Contact Ball Bearings 71811 CD/P4DBA

Super Precision Angular Contact Ball Bearings 71811 CD/P4DBA

The 71811 CD/P4DBA is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from durable chrome steel. It features a 15° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 3780 lbf and spins smoothly at speeds up to 34,000 RPM. Its phenolic cage ensures quiet operation and long service life, even in demanding conditions.

The open design allows for easy lubrication, while the extra-light preload ensures minimal friction. Ideal for high-precision applications like machine tool spindles or high-speed motors.

With a temperature range of -30°C to 110°C, it’s versatile for various industrial uses. Weighing just 0.16kg, it’s lightweight yet robust, and interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71811 CD/P4DBA
  • 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 15°
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 3780 lbf
  • Static Radial Load 4860 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 CD/P4DBA dimension drawing
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Features

How Does 71811 CD/P4DBA Bearing Achieve Super Precision?

71811 CD/P4DBA Bearing features a 15° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 3780 lbf, it handles demanding tasks with ease.
The P4 tolerance class guarantees exceptional accuracy, making it ideal for precision machinery.

Operating at speeds up to 34,000 rpm, it maintains performance without compromising reliability.
Its matched arrangement of two bearings (DB) ensures balanced load distribution for consistent results.

Application

Industrial Uses of 71811 CD/P4DBA Bearing
71811 CD/P4DBA 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 CD/P4DBA Bearing supports high-speed components like turbochargers and transmission systems. Its extra light preload helps reduce friction, enhancing overall efficiency.

For robotics, 71811 CD/P4DBA Bearing offers reliable performance in articulated arms and precision joints. The phenolic cage material ensures smooth operation even during rapid movements.

Medical imaging devices benefit from 71811 CD/P4DBA Bearing’s consistent performance and low noise levels. Its chrome steel construction ensures durability in critical healthcare equipment.

In consumer electronics, 71811 CD/P4DBA Bearing can be found in high-end printers and scanners, where precision and quiet operation are essential. The P4 tolerance class guarantees reliable performance over time.

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