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Super Precision Angular Contact Ball Bearings S71904 CD/P4AQBCC

Super Precision Angular Contact Ball Bearings S71904 CD/P4AQBCC

The S71904 CD/P4AQBCC is a super precision angular contact ball bearing with a 20mm bore and 37mm outer diameter, crafted from durable chrome steel. It features a 15° contact angle and comes sealed for protection, with a phenolic cage for smooth operation.

This bearing handles radial loads up to 3578 lbf and spins at speeds up to 75,000 RPM, making it suitable for high-performance applications. Its moderate preload (Class C) ensures stable operation under angular contact loads.

The matched set of four bearings (arranged <> QBC) offers balanced performance, though they aren’t universally interchangeable. Ideal for precision machinery like spindles or CNC tools where accuracy and speed matter.

Weighing just 0.15kg, it operates in temperatures from -30°C to 110°C and comes pre-lubricated with grease for easy maintenance. Compliant with P4A tolerance standards for reliable precision.

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Product Parameters

  • Part Number S71904 CD/P4AQBCC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 37 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 36 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 15
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • 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 3578 lbf
  • Static Radial Load 2902 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 75000 rpm
  • Weight 0.15 kg
Super Precision Angular Contact Ball Bearings S71904 CD/P4AQBCC dimension drawing
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Features

How Does S71904 CD/P4AQBCC Bearing Reduce Friction?

S71904 CD/P4AQBCC Bearing features a 15° contact angle, optimised for smooth angular contact performance.
Its chrome steel rings and balls ensure durability while minimising friction during operation.

The phenolic cage maintains ball alignment, reducing wear and enhancing efficiency.
With a maximum speed of 75,000 rpm, it delivers reliable performance in high-speed applications.

Grease lubrication further reduces friction, ensuring consistent operation.
Its sealed design keeps contaminants out, prolonging service life.

Application

Common Applications of S71904 CD/P4AQBCC Bearing
S71904 CD/P4AQBCC Bearing is widely used in high-speed machine tools, where its precision and moderate preload ensure smooth operation. The sealed design keeps contaminants out, making it suitable for demanding industrial environments.

In robotics, S71904 CD/P4AQBCC Bearing provides reliable angular contact support for mechanical arms, enhancing movement accuracy. Its phenolic cage reduces friction, which is ideal for repetitive tasks.

For medical imaging devices, S71904 CD/P4AQBCC Bearing’s chrome steel construction offers durability and consistent performance. The grease lubrication ensures quiet operation, crucial for sensitive medical settings.

Automotive applications like electric motor shafts benefit from S71904 CD/P4AQBCC Bearing’s high-speed capabilities. The matched arrangement of four bearings provides stability under angular loads.

In 3D printers, S71904 CD/P4AQBCC Bearing’s precision helps maintain print quality by reducing vibration. Its compact size fits well in space-constrained designs.

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