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Super Precision Angular Contact Ball Bearings 71918 ACE/P4A

Super Precision Angular Contact Ball Bearings 71918 ACE/P4A

The 71918 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 features a 25° contact angle and handles dynamic radial loads up to 6435 lbf, spinning smoothly at speeds up to 20,000 RPM.

Its open design and phenolic cage ensure durability and easy maintenance, while the P4 tolerance class guarantees exceptional accuracy. The bearing operates efficiently in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a versatile choice for replacements. Ideal for high-precision applications like machine tools or spindle drives where angular contact and accuracy are crucial.

Weighing 0.54kg, it offers a robust yet lightweight solution for demanding environments. Preload availability allows for customised performance tuning.

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Product Parameters

  • Part Number 71918 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 Open
  • Matched Arrangement No
  • 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 20000 rpm
  • Weight 0.54 kg
  • Price（$） 11.124
Super Precision Angular Contact Ball Bearings 71918 ACE/P4A dimension drawing
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Features

Performance Features of 71918 ACE/P4A Bearing

71918 ACE/P4A Bearing is crafted with a 25° contact angle, ideal for handling combined radial and axial loads.
Its chrome steel rings and balls enhance durability, while the phenolic cage ensures smooth operation at high speeds.

With a dynamic radial load capacity of 6435 lbf, it performs reliably in demanding applications.
The P4 tolerance class guarantees precision, making it suitable for high-accuracy machinery.

71918 ACE/P4A Bearing operates efficiently at speeds up to 20,000 rpm, balancing speed and stability.
Its open design allows for easy lubrication, reducing friction and prolonging service life.

The temperature range of -30° to 110°C ensures consistent performance in varying conditions.
Weighing just 0.54 kg, it offers a lightweight yet robust solution for precision engineering needs.

Application

Essential Roles of 71918 ACE/P4A Bearing
In high-precision machine tools, 71918 ACE/P4A Bearing excels with its 25° contact angle, ensuring smooth operation under radial and axial loads. Its P4 tolerance class makes it suitable for applications demanding tight precision.

Where Is 71918 ACE/P4A Bearing Used?
You’ll often find 71918 ACE/P4A Bearing in spindle assemblies for CNC machines, where its phenolic cage reduces friction at high speeds. The open design allows for efficient lubrication, extending service life.

Built for Heavy-Duty Use: 71918 ACE/P4A Bearing
This bearing handles dynamic radial loads up to 6435 lbf, making it reliable for industrial gearboxes. Its chrome steel construction ensures durability in demanding environments.

Automotive vs Aerospace: Applications of 71918 ACE/P4A Bearing
In automotive systems, 71918 ACE/P4A Bearing supports high-speed components like turbochargers. For aerospace, its precision and temperature stability make it ideal for flight control systems.

Perfect Fit for Automation: 71918 ACE/P4A Bearing
Robotic arms benefit from 71918 ACE/P4A Bearing’s low friction and high-speed capability. The 20,000 rpm max speed ensures smooth motion in automated production lines.

Q&A

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