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Super Precision Angular Contact Ball Bearings 7028 ACD/P4ADGB

Super Precision Angular Contact Ball Bearings 7028 ACD/P4ADGB

The 7028 ACD/P4ADGB is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, measuring 66mm in width. Made from chrome steel, it’s built to handle heavy radial loads up to 52650 lbf.

Its 25° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face setups. The phenolic cage ensures smooth operation at speeds up to 11000 RPM.

This bearing comes pre-lubricated and works in temperatures from -30°C to 110°C. Its P4A tolerance class guarantees high precision for demanding applications.

Ideal for machine tools or high-speed spindles where accuracy and load capacity are crucial. The set includes two matched bearings for versatile mounting options. Weighing 6.84kg, it’s robust yet precision-engineered.

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Product Parameters

  • Part Number 7028 ACD/P4ADGB
  • 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 Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • 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 6.84 kg
Super Precision Angular Contact Ball Bearings 7028 ACD/P4ADGB dimension drawing
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Features

Performance Features of 7028 ACD/P4ADGB Bearing

7028 ACD/P4ADGB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure high durability under dynamic radial loads up to 52,650 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 11,000 rpm, it delivers reliable performance in high-speed scenarios.

Universal matching allows flexible arrangement options, including back-to-back or face-to-face configurations.
Its P4A tolerance class ensures precision, making it suitable for demanding industrial applications.

The open design simplifies lubrication, while the temperature range of -30°C to 110°C ensures adaptability.
Light preload (Class B) further enhances stability, reducing vibration during operation.

Application

Industrial Uses of 7028 ACD/P4ADGB Bearing
7028 ACD/P4ADGB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The universal matching feature allows for flexible arrangements, making it suitable for complex setups.

In automotive applications, 7028 ACD/P4ADGB Bearing supports high-speed components like turbochargers and transmission systems. Its light preload and phenolic cage contribute to smooth performance under demanding conditions.

For robotics and automation, 7028 ACD/P4ADGB Bearing excels in robotic arms and CNC machinery, thanks to its P4A tolerance class. The chrome steel construction provides durability for continuous operation.

Medical imaging devices benefit from 7028 ACD/P4ADGB Bearing’s precision and reliability. The open design and lubricated setup ensure consistent performance in sensitive environments.

In aerospace systems, 7028 ACD/P4ADGB Bearing handles high radial loads in components like landing gear and actuators. Its temperature range and universal matching make it versatile for various flight conditions.

Q&A

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