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Super Precision Angular Contact Ball Bearings 7028 ACD/P4A

Super Precision Angular Contact Ball Bearings 7028 ACD/P4A

The 7028 ACD/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, making it suitable for high-precision applications.

With a 25° contact angle and phenolic cage, it offers smooth operation and durability. It handles dynamic radial loads up to 32850 lbf and static radial loads up to 35100 lbf, spinning efficiently at speeds up to 8500 RPM.

Its open design allows for easy lubrication, while the P4 tolerance class ensures exceptional accuracy. The bearing performs reliably in temperatures ranging from -30°C to 110°C.

Ideal for machine tools, spindles, or other high-speed equipment where precision is key. Weighing 3.42kg, it’s a robust choice for demanding industrial environments. Interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 7028 ACD/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 25°
  • 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 32850 lbf
  • Static Radial Load 35100 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 8500 rpm
  • Weight 3.42 kg
  • Price（$） 1739.34
Super Precision Angular Contact Ball Bearings 7028 ACD/P4A dimension drawing
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Features

Performance Features of 7028 ACD/P4A Bearing

7028 ACD/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls ensure high strength, supporting dynamic radial loads up to 32,850 lbf.

With a phenolic cage, 7028 ACD/P4A Bearing maintains ball alignment, reducing friction and wear.
Its P4 tolerance class guarantees precision, making it suitable for high-speed operations up to 8,500 rpm.

7028 ACD/P4A Bearing operates efficiently in temperatures ranging from -30° to 110°C.
The open design allows for easy lubrication, ensuring smooth performance in demanding conditions.

Application

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

In automotive applications, 7028 ACD/P4A Bearing supports wheel hubs and transmission systems, handling both radial and axial loads efficiently. The P4 tolerance class ensures smooth performance even at high speeds.

For robotics, 7028 ACD/P4A Bearing provides the necessary precision for articulated arms and automated systems. Its chrome steel construction offers durability, while the open design allows for easy lubrication.

Medical imaging devices benefit from 7028 ACD/P4A Bearing’s reliable performance, ensuring minimal vibration and noise. The wide temperature range makes it adaptable to various clinical environments.

In aerospace, 7028 ACD/P4A Bearing is used in flight control systems, where its high dynamic load capacity is essential. The lightweight phenolic cage contributes to overall fuel efficiency.

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