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Super Precision Angular Contact Ball Bearings 7028 ACDGA/P4A

Super Precision Angular Contact Ball Bearings 7028 ACDGA/P4A

The 7028 ACDGA/P4A is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from durable chrome steel. Its 25° contact angle efficiently handles both radial and axial loads, making it versatile for high-precision applications.

With a dynamic radial load capacity of 32850 lbf and a maximum speed of 6300 RPM, it performs reliably under demanding conditions. The phenolic cage ensures smooth operation, while the open design allows for easy lubrication.

This bearing is part of a universal matching set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for machine tools or spindle systems where precision and stability are crucial.

Weighing 3.42kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it ensures consistent performance in temperatures ranging from -30°C to 110°C.

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Product Parameters

  • Part Number 7028 ACDGA/P4A
  • 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 33 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 No
  • Number Of Bearings In Matched Set 3
  • 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 Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 32850 lbf
  • Static Radial Load 35100 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 6300 rpm
  • Weight 3.42 kg
  • Price（$） 729.36
Super Precision Angular Contact Ball Bearings 7028 ACDGA/P4A dimension drawing
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Features

Performance Features of 7028 ACDGA/P4A Bearing

7028 ACDGA/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability and consistent performance under high radial loads.

The phenolic cage in 7028 ACDGA/P4A Bearing reduces friction and wear, enhancing operational efficiency.
With a dynamic radial load capacity of 32,850 lbf, it handles demanding conditions reliably.

7028 ACDGA/P4A Bearing operates smoothly at speeds up to 6,300 rpm, balancing speed and precision.
Its P4A tolerance class ensures high accuracy, making it suitable for precision machinery.

The open design of 7028 ACDGA/P4A Bearing allows for easy lubrication, maintaining performance over time.
It functions effectively in temperatures ranging from -30°C to 110°C, adapting to various environments.

7028 ACDGA/P4A Bearing’s universal matching capability offers flexibility in mounting configurations.
This feature simplifies installation and maintenance, reducing downtime and operational costs.

Application

Industrial Uses of 7028 ACDGA/P4A Bearing
The 7028 ACDGA/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. Its phenolic cage reduces friction, making it suitable for continuous operation in industrial settings.

Where Is 7028 ACDGA/P4A Bearing Used?
You’ll often find the 7028 ACDGA/P4A Bearing in automotive transmissions, where its extra-light preload helps maintain smooth gear shifts. The chrome steel construction also handles high radial loads effortlessly.

Perfect Fit for Automation: 7028 ACDGA/P4A Bearing
In robotic arms, the 7028 ACDGA/P4A Bearing provides reliable angular contact support, ensuring precise movement. Its P4A tolerance class makes it ideal for applications demanding minimal vibration.

Medical vs Industrial: Where 7028 ACDGA/P4A Bearing Excels
While the 7028 ACDGA/P4A Bearing is robust enough for industrial presses, its precision also suits medical imaging devices. The open design allows for easy lubrication, extending its lifespan in both fields.

Practical Applications of 7028 ACDGA/P4A Bearing
The 7028 ACDGA/P4A Bearing works well in 3D printers, where its high-speed capability ensures smooth layer deposition. Its universal matching feature simplifies installation in complex setups.

Q&A

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