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Super Precision Angular Contact Ball Bearings 7028 ACD/HCP4ADGA

Super Precision Angular Contact Ball Bearings 7028 ACD/HCP4ADGA

The 7028 ACD/HCP4ADGA is a super precision angular contact ball bearing, measuring 140mm by 210mm by 66mm. It features a 25° contact angle and is made from high-quality chrome steel with ceramic balls for smooth operation.

This bearing handles dynamic radial loads up to 52,650 lbf and spins at speeds up to 11,000 RPM. Its phenolic cage ensures durability, while the extra-light preload (Class A) reduces friction.

The open design allows for easy lubrication, and it operates efficiently in temperatures from -30°C to 110°C. It comes in a matched set of two, suitable for universal matching arrangements like back-to-back or face-to-face.

Ideal for high-precision applications such as machine tools or spindles, this bearing is interchangeable with SKF models. Weighing 5.65kg, it offers a robust yet precise solution for demanding environments.

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Product Parameters

  • Part Number 7028 ACD/HCP4ADGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 66 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 22
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 52650 lbf
  • Static Radial Load 70875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 5.65 kg
  • Price（$） 1414.395
Super Precision Angular Contact Ball Bearings 7028 ACD/HCP4ADGA dimension drawing
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Features

Performance Features of 7028 ACD/HCP4ADGA Bearing

7028 ACD/HCP4ADGA Bearing features a 25° contact angle, optimised for angular contact load distribution.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 11,000 rpm.
With a dynamic radial load capacity of 52,650 lbf, it handles demanding applications with ease.

Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.
The extra light preload (Class A) ensures precision performance in high-speed scenarios.

Operating between -30°C to 110°C, 7028 ACD/HCP4ADGA Bearing maintains reliability in varied conditions.
Its P4A tolerance class guarantees consistent accuracy for precision machinery needs.

Application

Key Fields for 7028 ACD/HCP4ADGA Bearing
In high-precision machine tools, 7028 ACD/HCP4ADGA Bearing excels with its 25° contact angle and ceramic balls, ensuring minimal friction during high-speed operations. The universal matching design allows flexible arrangements for complex setups.

Where Is 7028 ACD/HCP4ADGA Bearing Used?
You’ll often spot 7028 ACD/HCP4ADGA Bearing in aerospace applications, where its phenolic cage and P4A tolerance class meet strict reliability standards. It’s also handy in spindle systems requiring extra-light preload.

Built for Heavy-Duty Use: 7028 ACD/HCP4ADGA Bearing
This bearing handles dynamic radial loads up to 52,650 lbf, making it suitable for industrial gearboxes. The chrome steel rings and ceramic balls extend service life even in demanding environments.

Automotive vs Aerospace: Applications of 7028 ACD/HCP4ADGA Bearing
While 7028 ACD/HCP4ADGA Bearing supports automotive drivetrains with its tandem arrangement, its true strength shines in aerospace actuators due to the phenolic cage’s heat resistance. The metric sizing ensures broad compatibility.

Perfect Fit for Automation: 7028 ACD/HCP4ADGA Bearing
In robotic arms, 7028 ACD/HCP4ADGA Bearing’s open design and lubricated finish enable smooth, maintenance-free motion. The matched set feature simplifies installation in precision assembly lines.

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