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Super Precision Angular Contact Ball Bearings S71918 CB/P4A

Super Precision Angular Contact Ball Bearings S71918 CB/P4A

The S71918 CB/P4A is a super precision angular contact ball bearing with a 90mm bore and 125mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and comes sealed for protection, with matched arrangements and preload options available.

This bearing handles radial loads up to 4005 lbf and operates smoothly at speeds up to 14,000 RPM. Its phenolic cage ensures durability, while the lubricated design reduces friction for consistent performance.

With a P4 tolerance class (ABEC-7), it offers excellent precision for demanding applications. Ideal for high-speed machinery like spindles or CNC equipment where accuracy is crucial.

Weighing 0.61kg, it’s robust yet manageable for its size. Suitable for temperatures from -30°C to 110°C, making it versatile for various industrial environments.

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Product Parameters

  • Part Number S71918 CB/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 18 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 36
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4005 lbf
  • Static Radial Load 3960 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 14000 rpm
  • Weight 0.61 kg
  • Price（$） 122.391
Super Precision Angular Contact Ball Bearings S71918 CB/P4A dimension drawing
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Features

How Does S71918 CB/P4A Bearing Ensure Precision in High-Speed Applications?

S71918 CB/P4A Bearing features a 15° contact angle, optimised for angular contact loads and high-speed performance.
Its chrome steel construction and phenolic cage enhance durability while maintaining smooth operation.

With a maximum speed of 14,000 rpm, it is designed for demanding precision tasks.
The P4 tolerance class ensures consistent accuracy, making it suitable for high-performance machinery.

Preload and matched arrangement options further improve stability and load distribution.
This bearing is lubricated for reduced friction, extending its service life even under heavy radial loads.

Application

Super Precision Angular Contact Ball Bearings S71918 CB/P4A is commonly used in high-speed machine tools, where its 15° contact angle ensures accurate radial and axial load handling. The sealed design keeps contaminants out, extending service life in demanding industrial environments.

In automotive applications, S71918 CB/P4A supports components like electric motors and gearboxes, thanks to its phenolic cage reducing friction at high speeds. Its P4 tolerance class makes it ideal for precision-driven systems in modern vehicles.

For robotics, S71918 CB/P4A excels in articulated arms and automated systems, where smooth angular contact movement is essential. The chrome steel construction provides durability, even in continuous operation scenarios.

Medical imaging devices benefit from S71918 CB/P4A’s low-noise performance and consistent accuracy. The lubricated design ensures quiet operation, crucial for sensitive diagnostic equipment.

In aerospace applications, S71918 CB/P4A’s matched arrangement capability allows for custom configurations in flight control systems. Its high-speed rating and temperature tolerance make it reliable under varying operational conditions.

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