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Super Precision Angular Contact Ball Bearings S71918 ACE/P4A

Super Precision Angular Contact Ball Bearings S71918 ACE/P4A

The S71918 ACE/P4A is a super precision angular contact ball bearing with a 90mm bore and 125mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 6435 lbf and operates smoothly at speeds up to 13,000 RPM.

Its sealed design keeps lubrication in and contaminants out, while the phenolic cage ensures quiet and efficient performance. The 25° contact angle provides excellent stability under angular loads.

This bearing is ideal for high-precision applications like machine tool spindles or medical equipment. It comes pre-lubricated and is interchangeable with SKF models for easy replacement.

Weighing 0.54kg, it’s built for durability in temperatures ranging from -30°C to 110°C. The P4 tolerance class guarantees exceptional accuracy for demanding tasks.

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Product Parameters

  • Part Number S71918 ACE/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 11.112 mm
  • Ball Qty 24
  • Contact Angle 25°
  • 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 6435 lbf
  • Static Radial Load 5130 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 13000 rpm
  • Weight 0.54 kg
  • Price（$） 121.662
Super Precision Angular Contact Ball Bearings S71918 ACE/P4A dimension drawing
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Features

Why Choose S71918 ACE/P4A Bearing for Precision Tasks?

S71918 ACE/P4A Bearing features a 25° contact angle, optimising load distribution for high-precision applications.

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

With a dynamic radial load capacity of 6435 lbf, it handles demanding operations with ease.

The P4 tolerance class guarantees exceptional accuracy, making it ideal for precision machinery.

Lubricated for smooth operation, it supports speeds up to 13,000 rpm without compromising performance.

Application

Where Is S71918 ACE/P4A Bearing Used?
S71918 ACE/P4A Bearing is commonly used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The sealed design keeps contaminants out, making it suitable for demanding workshop environments.

In robotics, S71918 ACE/P4A Bearing supports articulated arms and joints, providing smooth movement with minimal friction. Its phenolic cage offers lightweight durability, ideal for repetitive motions in automated systems.

For medical imaging devices like MRI scanners, S71918 ACE/P4A Bearing’s P4 tolerance class delivers the precision needed for stable, vibration-free operation. The chrome steel construction also ensures long-term reliability in critical healthcare applications.

In aerospace applications, S71918 ACE/P4A Bearing handles high-speed rotations in components like turbine shafts. Its lubricated design and temperature range make it adaptable to both extreme cold and moderate heat conditions.

Q&A

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