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Super Precision Angular Contact Ball Bearings 7028 ACD/HCP4A

Super Precision Angular Contact Ball Bearings 7028 ACD/HCP4A

The 7028 ACD/HCP4A is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, measuring 33mm in width. Made from chrome steel with ceramic balls, it offers high durability and smooth operation.

It handles radial loads up to 32850 lbf and can reach speeds of 11000 RPM, making it suitable for high-performance applications. The 25° contact angle ensures efficient load distribution.

Its open design and phenolic cage allow for easy maintenance and long service life. The bearing is lubricated and works in temperatures from -30°C to 110°C.

Ideal for precision machinery like spindles or CNC equipment, this model is interchangeable with SKF bearings. Weighing 2.83kg, it’s robust yet manageable for its size. Compliant with P4 tolerance class for exceptional accuracy.

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Product Parameters

  • Part Number 7028 ACD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.01mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 33 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 22
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 32850 lbf
  • Static Radial Load 35100 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 11000 rpm
  • Weight 2.83 kg
  • Price（$） 1739.556
Super Precision Angular Contact Ball Bearings 7028 ACD/HCP4A dimension drawing
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Features

How Does 7028 ACD/HCP4A Bearing Reduce Friction?

7028 ACD/HCP4A Bearing features ceramic balls and a phenolic cage, significantly reducing friction during operation.
The 25° contact angle ensures optimal load distribution, enhancing efficiency in high-speed applications.

With a maximum speed of 11,000 rpm, it maintains smooth performance even under demanding conditions.
Its chrome steel rings provide durability, while the open design allows for easy lubrication.

The P4 tolerance class guarantees precision, making it suitable for critical tasks.
Its dynamic radial load capacity of 32,850 lbf ensures reliable performance in heavy-duty applications.

Application

How Does 7028 ACD/HCP4A Bearing Improve Performance?
In machine tools, 7028 ACD/HCP4A Bearing handles high-speed rotations with precision, thanks to its ceramic balls and 25° contact angle. The phenolic cage reduces friction, making it ideal for spindle applications.

Automotive testing rigs benefit from 7028 ACD/HCP4A Bearing’s matched arrangement, ensuring consistent load distribution during performance evaluations. Its P4 tolerance class guarantees accuracy under demanding conditions.

For aerospace components, 7028 ACD/HCP4A Bearing’s chrome steel rings provide durability in navigation systems. The open design allows for custom lubrication, adapting to varying operational temperatures.

In robotics, 7028 ACD/HCP4A Bearing supports articulated arms with smooth angular movement. The lightweight phenolic cage enhances efficiency without compromising on load capacity.

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