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Super Precision Angular Contact Ball Bearings 7218 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings 7218 CDGA/HCP4A

The 7218 CDGA/HCP4A is a super precision angular contact ball bearing with a 90mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and ceramic balls for smooth operation.

This bearing handles radial loads up to 28575 lbf and spins at speeds up to 17000 RPM. Its phenolic cage ensures durability, while the extra light preload (Class A) offers precise performance.

The open design allows easy lubrication, and it works in temperatures from -30°C to 110°C. With P4A tolerance class, it delivers excellent accuracy.

Ideal for high-speed applications like machine tool spindles or precision equipment. Weighing 1.83kg, it’s robust yet manageable. Compatible with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 7218 CDGA/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 30 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 16
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 28575 lbf
  • Static Radial Load 25200 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 17000 rpm
  • Weight 1.83 kg
Super Precision Angular Contact Ball Bearings 7218 CDGA/HCP4A dimension drawing
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Features

Performance Features of 7218 CDGA/HCP4A Bearing

7218 CDGA/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
The ceramic balls and chrome steel rings enhance durability while reducing friction.

With a dynamic radial load capacity of 28575 lbf, it handles demanding conditions efficiently.
Its phenolic cage ensures smooth operation, even at high speeds up to 17,000 rpm.

The extra light preload (Class A) minimises vibration, making it ideal for high-precision tasks.
Its universal matching capability allows flexible arrangements like back-to-back or tandem setups.

Operating between -30°C to 110°C, 7218 CDGA/HCP4A Bearing performs reliably in varied environments.
The P4A tolerance class ensures consistent accuracy for critical applications.

Application

Industrial Uses of 7218 CDGA/HCP4A Bearing
The 7218 CDGA/HCP4A Bearing is well-suited for high-speed machine tools, where its ceramic balls and phenolic cage reduce friction and heat buildup. Its precision design ensures stable performance in demanding industrial environments.

In automotive applications, 7218 CDGA/HCP4A Bearing excels in gearboxes and drivetrains, handling angular contact loads with ease. The extra-light preload helps maintain smooth operation even under varying speeds.

For automation systems, 7218 CDGA/HCP4A Bearing is a reliable choice for robotic arms and CNC machines, thanks to its high dynamic radial load capacity. The P4A tolerance class guarantees consistent accuracy in repetitive tasks.

Medical imaging devices benefit from 7218 CDGA/HCP4A Bearing’s low vibration and quiet operation. The chrome steel rings and ceramic balls ensure long service life in critical healthcare equipment.

In aerospace components, 7218 CDGA/HCP4A Bearing’s lightweight design and high-speed capabilities make it ideal for actuators and control systems. The wide temperature range allows for reliable performance in extreme conditions.

Q&A

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