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Super Precision Angular Contact Ball Bearings 7028 ACDGB/P4A

Super Precision Angular Contact Ball Bearings 7028 ACDGB/P4A

The 7028 ACDGB/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 thrust 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 and reduces friction, 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. Its P4A tolerance class guarantees exceptional accuracy, ideal for machine tools or high-speed spindles.

Weighing 3.42kg, it’s robust yet manageable for its size. Operating between -30°C and 110°C, it’s compliant with industry standards, offering a dependable solution for precision engineering needs.

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Product Parameters

  • Part Number 7028 ACDGB/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 Light / Class B
  • 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
Super Precision Angular Contact Ball Bearings 7028 ACDGB/P4A dimension drawing
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Features

Performance Features of 7028 ACDGB/P4A Bearing

7028 ACDGB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 32,850 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 6,300 rpm.
Precision tolerances (P4A class) guarantee consistent performance in demanding conditions.

With a temperature range of -30°C to 110°C, 7028 ACDGB/P4A Bearing performs reliably in varied environments.
Its universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

The open design simplifies lubrication, maintaining efficiency over extended periods.
Weighing 3.42 kg, it balances strength and practicality for industrial use.

Application

Industrial Uses of 7028 ACDGB/P4A Bearing
The 7028 ACDGB/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. Its light preload and P4A tolerance class make it suitable for applications demanding minimal vibration.

In automotive systems, 7028 ACDGB/P4A Bearing supports high-speed components like turbochargers and electric motor shafts. The chrome steel construction provides durability under both radial and angular loads.

For automation equipment, 7028 ACDGB/P4A Bearing’s phenolic cage offers stability in robotic arms and CNC machines. Its universal matching capability allows flexible arrangements in complex assemblies.

What Makes 7028 ACDGB/P4A Bearing a Preferred Choice?
The 7028 ACDGB/P4A Bearing excels in aerospace applications, such as helicopter rotor systems, due to its high dynamic load capacity. Its temperature range also ensures reliability in extreme conditions.

In medical imaging devices, 7028 ACDGB/P4A Bearing’s precision reduces noise and vibration for clearer scans. The open design facilitates easy lubrication, extending service life in critical environments.

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