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Super Precision Angular Contact Ball Bearings 7028 CD/P4A

Super Precision Angular Contact Ball Bearings 7028 CD/P4A

The 7028 CD/P4A 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 is designed for angular contact loads, offering smooth operation at speeds up to 10,000 RPM.

With a 15° contact angle and phenolic cage, it provides excellent stability and handles dynamic radial loads up to 34,425 lbf. The open design allows for easy lubrication, ensuring long-lasting performance even in demanding conditions.

This bearing is ideal for high-precision applications like machine tools or spindles, where accuracy and reliability are crucial. It operates efficiently in temperatures ranging from -30°C to 110°C and meets the P4 tolerance class for superior precision.

Weighing 3.42kg, it’s a robust choice for industrial use. Compatible with SKF bearings, it’s a versatile option for replacements or upgrades. The preload availability adds to its adaptability in various setups.

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Product Parameters

  • Part Number 7028 CD/P4A
  • 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 No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 34425 lbf
  • Static Radial Load 37350 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 10000 rpm
  • Weight 3.42 kg
  • Price（$） 729.351
Super Precision Angular Contact Ball Bearings 7028 CD/P4A dimension drawing
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Features

Performance Features of 7028 CD/P4A Bearing

7028 CD/P4A Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.
Its 15° contact angle allows for efficient handling of combined radial and axial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a dynamic radial load capacity of 34425 lbf, it excels in demanding applications.

Designed for high-speed operations, 7028 CD/P4A Bearing supports speeds up to 10,000 rpm.
Its P4 tolerance class ensures exceptional accuracy for precision tasks.

Application

Key Fields for 7028 CD/P4A Bearing
In machine tools, 7028 CD/P4A Bearing excels with its 15° contact angle, providing stability for high-precision operations like milling and grinding. The phenolic cage reduces friction, ensuring smooth performance during extended use.

Where Is 7028 CD/P4A Bearing Used?
You’ll often find 7028 CD/P4A Bearing in automotive transmissions, where its angular contact design handles combined loads efficiently. Its P4 tolerance class makes it a reliable choice for demanding drivetrain applications.

Built for Heavy-Duty Use: 7028 CD/P4A Bearing
This bearing’s chrome steel construction and 22-ball setup make it ideal for industrial pumps operating under heavy radial loads. The lubricated design further enhances its durability in continuous-use scenarios.

Medical vs Industrial: Where 7028 CD/P4A Bearing Excels
While 7028 CD/P4A Bearing performs well in medical imaging devices, its true strength lies in industrial robotics. The 10,000 rpm max speed suits high-speed automation tasks without compromising precision.

Practical Applications of 7028 CD/P4A Bearing
In aerospace equipment, 7028 CD/P4A Bearing’s lightweight phenolic cage and P4 tolerance ensure reliable performance in navigation systems. The wide temperature range (-30° to 110°C) adds versatility for extreme environments.

Q&A

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