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Super Precision Angular Contact Ball Bearings 7218 ACD/P4A

Super Precision Angular Contact Ball Bearings 7218 ACD/P4A

The 7218 ACD/P4A is a super precision angular contact ball bearing with a 90mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 27225 lbf and operates smoothly at speeds up to 12000 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and low friction. The open design allows for easy lubrication, ensuring long service life even in demanding conditions.

This bearing is ideal for high-precision applications like machine tool spindles or robotics, where accuracy and reliability are crucial. It works well in temperatures from -30°C to 110°C.

Weighing 2.27kg, it’s robust yet manageable for its size. Compliant with P4 tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 7218 ACD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.01mm to 0
  • Width 30 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 16
  • 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 27225 lbf
  • Static Radial Load 23850 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 2.27 kg
  • Price（$） 238.14
Super Precision Angular Contact Ball Bearings 7218 ACD/P4A dimension drawing
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Features

Performance Features of 7218 ACD/P4A Bearing

7218 ACD/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 27225 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 12,000 rpm, it delivers smooth operation in precision tasks.

7218 ACD/P4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its P4 tolerance class ensures high precision, making it suitable for demanding industrial applications.

Application

Industrial Uses of 7218 ACD/P4A Bearing
The 7218 ACD/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design handles both radial and axial loads efficiently. Its phenolic cage reduces friction, making it suitable for high-speed operations.

In automotive applications, 7218 ACD/P4A Bearing supports components like wheel hubs and transmissions, ensuring smooth performance under demanding conditions. The P4 tolerance class guarantees precise alignment, which is vital for vehicle safety.

For robotics, 7218 ACD/P4A Bearing’s open design and chrome steel construction provide durability in robotic arms and automated systems. Its ability to handle high speeds makes it a reliable choice for repetitive movements.

Medical imaging devices benefit from 7218 ACD/P4A Bearing’s precision and low maintenance requirements. The consistent performance ensures accurate results in critical diagnostic equipment.

In consumer electronics, 7218 ACD/P4A Bearing is found in high-end printers and scanners, where its quiet operation and longevity are appreciated. The lubricated design further enhances its reliability in everyday use.

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