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Super Precision Angular Contact Ball Bearings 7028 CD/HCP4A

Super Precision Angular Contact Ball Bearings 7028 CD/HCP4A

The 7028 CD/HCP4A is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from high-quality chrome steel. It measures 33mm in width and features a 15° contact angle for efficient load handling.

This bearing supports dynamic radial loads up to 34425 lbf and can reach speeds of 12000 RPM, making it suitable for high-performance applications. Its ceramic balls and phenolic cage enhance durability and reduce friction.

The open design allows for easy lubrication, while the P4 tolerance class ensures exceptional precision. It operates smoothly in temperatures ranging from -30°C to 110°C.

Ideal for precision machinery like spindles or CNC equipment, this bearing is interchangeable with SKF models. Weighing 2.83kg, it offers a robust yet balanced solution for demanding environments.

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Product Parameters

  • Part Number 7028 CD/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 15°
  • 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 34425 lbf
  • Static Radial Load 37350 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 2.83 kg
  • Price（$） 1739.295
Super Precision Angular Contact Ball Bearings 7028 CD/HCP4A dimension drawing
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Features

Performance Features of 7028 CD/HCP4A Bearing

7028 CD/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.
The phenolic cage ensures smooth operation, even at high speeds up to 12,000 rpm.
With a dynamic radial load capacity of 34,425 lbf, it handles demanding conditions reliably.

Application

Industrial Uses of 7028 CD/HCP4A Bearing
The 7028 CD/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. Its ceramic balls and phenolic cage reduce friction, making it suitable for high-speed operations.

In automotive applications, 7028 CD/HCP4A Bearing supports components like electric motor shafts, providing reliable performance under angular loads. The P4 tolerance class ensures consistent alignment in demanding conditions.

For automation systems, 7028 CD/HCP4A Bearing is ideal for robotic arms, where its matched arrangement and preload options enhance stability. The open seal design allows for easy lubrication, extending service life in continuous use.

Medical imaging devices benefit from 7028 CD/HCP4A Bearing’s precision, ensuring smooth operation in scanners and diagnostic equipment. The chrome steel rings and ceramic balls offer durability in sterile environments.

Q&A

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