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Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQBCA

Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQBCA

The 7028 ACD/P4AQBCA 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.

Its 25° contact angle and matched set of four bearings provide excellent stability for angular loads. The phenolic cage ensures durability while keeping the weight manageable at 13.7kg.

The open design allows for easy lubrication, and it performs reliably in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or industrial gearboxes.

This bearing is interchangeable with SKF models, making it a practical choice for replacements or upgrades. Its P4A tolerance class ensures consistent performance in demanding environments.

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Product Parameters

  • Part Number 7028 ACD/P4AQBCA
  • 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 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • 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/P4AQBCA dimension drawing
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Features

Performance Features of 7028 ACD/P4AQBCA Bearing

7028 ACD/P4AQBCA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads up to 84,825 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a maximum speed of 6,300 rpm, it balances performance and reliability in precision settings.

7028 ACD/P4AQBCA Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its P4A tolerance class ensures high precision, making it suitable for demanding industrial applications.

The matched arrangement of four bearings provides stability and consistent performance.
Preloaded for extra light conditions, it offers smooth operation with minimal vibration.

Application

Industrial Uses of 7028 ACD/P4AQBCA Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it suitable for continuous operation.

In robotics, 7028 ACD/P4AQBCA Bearing provides stability for articulated arms, handling both radial and axial loads smoothly. Its matched arrangement of four bearings offers balanced performance in dynamic applications.

For aerospace components, 7028 ACD/P4AQBCA Bearing’s chrome steel construction withstands rigorous conditions while maintaining precision. The extra light preload ensures minimal vibration during high-speed rotations.

Where Is 7028 ACD/P4AQBCA Bearing Used?
You’ll find this bearing in medical imaging devices, where its P4A tolerance class guarantees consistent accuracy. The open seal design allows for easy lubrication in sensitive environments.

In industrial pumps, 7028 ACD/P4AQBCA Bearing handles heavy radial loads with ease. Its 25° contact angle optimises load distribution, extending service life even in demanding conditions.

Built for Heavy-Duty Use: 7028 ACD/P4AQBCA Bearing
This bearing excels in wind turbine gearboxes, where its dynamic radial load capacity ensures reliable performance. The lubricated design reduces maintenance needs in remote installations.

For printing machinery, 7028 ACD/P4AQBCA Bearing’s high-speed capability maintains precise paper alignment. The chrome steel balls provide durability against constant wear in fast-paced production lines.

Automotive vs Aerospace: Applications of 7028 ACD/P4AQBCA Bearing
In automotive testing equipment, this bearing supports precise measurement systems with its low vibration characteristics. The temperature range accommodates various testing environments.

For satellite mechanisms, 7028 ACD/P4AQBCA Bearing’s phenolic cage prevents outgassing in vacuum conditions. Its matched set configuration ensures consistent performance across multiple axes.

Q&A

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