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Super Precision Angular Contact Ball Bearings 71804 ACD/P4QBCC

Super Precision Angular Contact Ball Bearings 71804 ACD/P4QBCC

The 71804 ACD/P4QBCC is a super precision angular contact ball bearing with a 20mm bore and 32mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched set of four bearings for balanced performance.

This bearing handles radial loads up to 2151 lbf and can spin at remarkable speeds up to 121,000 RPM. Its phenolic cage ensures smooth operation and durability under moderate preload conditions.

The open design allows for easy lubrication, while the P4 tolerance class guarantees precise performance. Ideal for high-speed applications like machine tool spindles or precision instruments.

Weighing just 0.072kg, it’s lightweight yet robust, operating smoothly in temperatures from -30°C to 110°C. A reliable choice for engineers needing accuracy and speed.

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Product Parameters

  • Part Number 71804 ACD/P4QBCC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 32 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 28 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 3.175 mm
  • Ball Qty 17
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2151 lbf
  • Static Radial Load 2250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 121000 rpm
  • Weight 0.072 kg
Super Precision Angular Contact Ball Bearings 71804 ACD/P4QBCC dimension drawing
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Features

Performance Features of 71804 ACD/P4QBCC Bearing

71804 ACD/P4QBCC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to wear, ensuring consistent performance.

The phenolic cage maintains ball alignment, reducing friction and extending service life.

With a maximum speed of 121,000 rpm, it delivers reliable operation in high-speed environments.

Application

Industrial Uses of 71804 ACD/P4QBCC Bearing
This bearing is commonly used in high-speed machine tools, where its precision and moderate preload ensure smooth operation. The phenolic cage helps reduce friction, making it suitable for continuous use.

Where Is 71804 ACD/P4QBCC Bearing Used?
You’ll find it in automotive applications like electric motors and gearboxes, where angular contact handling is key. Its chrome steel construction offers durability under varying loads.

Optimized for Performance: 71804 ACD/P4QBCC Bearing
In robotics, this bearing supports precise movements in joints and arms. The matched arrangement of four bearings enhances stability in dynamic applications.

Medical vs Industrial: Where 71804 ACD/P4QBCC Bearing Excels
It’s reliable in medical imaging devices due to its low vibration and high-speed capability. Industrial uses include CNC machines, where accuracy is critical.

Practical Applications of 71804 ACD/P4QBCC Bearing
For automation systems, this bearing ensures consistent performance in linear actuators. Its open design allows for easy lubrication, extending service life.

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