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Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQGB

Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQGB

The 7028 ACD/P4AQGB is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 84825 lbf and operates smoothly at speeds up to 6300 RPM.

With a 25° contact angle and open design, it offers excellent performance in universal matching arrangements. The phenolic cage ensures durability and reduces friction, making it suitable for high-precision applications.

This bearing is ideal for machine tools or spindle systems where accuracy and reliability are crucial. It works well in temperatures from -30°C to 110°C and comes pre-lubricated for easy use.

Weighing 13.7kg, it’s robust yet designed for precision. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for seamless replacements.

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Product Parameters

  • Part Number 7028 ACD/P4AQGB
  • 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 132 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 4
  • 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 84825 lbf
  • Static Radial Load 141750 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 6300 rpm
  • Weight 13.7 kg
Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQGB dimension drawing
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Features

Performance Features of 7028 ACD/P4AQGB Bearing

7028 ACD/P4AQGB Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.

Its 25° contact angle allows for efficient handling of combined radial and axial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.

With a dynamic radial load capacity of 84825 lbf, it excels in demanding applications.

The P4A tolerance class ensures tight dimensional accuracy for superior operation.

Lubricated for smooth performance, it operates efficiently at speeds up to 6,300 rpm.

Its universal matching design offers flexibility in back-to-back, face-to-face, or tandem arrangements.

The temperature range of -30°C to 110°C makes it suitable for various environments.

Application

How Does 7028 ACD/P4AQGB Bearing Improve Performance?
In high-precision machine tools, 7028 ACD/P4AQGB Bearing handles both radial and axial loads with its 25° contact angle, ensuring smooth operation during heavy cutting processes. The phenolic cage reduces friction, making it suitable for long-duration tasks.

Where Is 7028 ACD/P4AQGB Bearing Used?
This bearing is a common choice for spindle units in CNC machines, where its P4A tolerance class guarantees tight precision. The universal matching feature allows flexible arrangements like back-to-back or tandem setups.

Built for Heavy-Duty Use: 7028 ACD/P4AQGB Bearing
With a dynamic radial load capacity of 84825 lbf, 7028 ACD/P4AQGB Bearing excels in industrial gearboxes and large pumps. Its chrome steel construction ensures durability even in demanding environments.

Automotive vs Aerospace: Applications of 7028 ACD/P4AQGB Bearing
In automotive testing rigs, 7028 ACD/P4AQGB Bearing supports high-speed rotations, while in aerospace, its light preload class ensures stability in sensitive navigation systems. The metric sizing fits global standards.

Essential Roles of 7028 ACD/P4AQGB Bearing
For medical imaging devices like MRI scanners, 7028 ACD/P4AQGB Bearing provides quiet and vibration-free rotation. The lubricated design minimises maintenance needs in critical healthcare settings.

Q&A

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