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Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQBCC

Super Precision Angular Contact Ball Bearings 7028 ACD/P4AQBCC

The 7028 ACD/P4AQBCC is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from durable 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 arrangement of four bearings provide excellent stability under angular loads. The phenolic cage ensures quiet performance and reduced friction.

Designed for moderate preload (Class C), this bearing suits high-precision applications like machine tool spindles or robotics. It works reliably in temperatures from -30°C to 110°C.

Weighing 13.7kg, it’s robust yet precision-engineered for demanding environments. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 7028 ACD/P4AQBCC
  • 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 Moderate / Class C
  • 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/P4AQBCC dimension drawing
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Features

Performance Features of 7028 ACD/P4AQBCC Bearing

7028 ACD/P4AQBCC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to both dynamic and static radial loads, reaching up to 84825 lbf and 141750 lbf respectively.

The phenolic cage ensures smooth operation, even at high speeds of up to 6,300 rpm.

With a P4A tolerance class, it delivers precision performance in demanding conditions.

How Is 7028 ACD/P4AQBCC Bearing Engineered for Reliability?

7028 ACD/P4AQBCC Bearing features a matched arrangement of four bearings, ensuring consistent performance under moderate preload.

The open seal design allows for easy lubrication, maintaining smooth operation over time.

Its chrome steel construction resists wear, while the phenolic cage reduces friction and noise.

With a temperature range of -30°C to 110°C, it performs reliably in various environments.

Built for Precision: 7028 ACD/P4AQBCC Bearing

7028 ACD/P4AQBCC Bearing is crafted for high-precision applications, thanks to its P4A tolerance class and 22.225 mm ball diameter.

The 25° contact angle ensures efficient load distribution, while the phenolic cage minimises vibration.

With 22 balls arranged for optimal performance, it handles both radial and angular loads with ease.

Its dimensions of 140 mm×210 mm×132 mm make it suitable for a range of industrial uses.

Steel vs Ceramic Bearings: Strengths of 7028 ACD/P4AQBCC Bearing

7028 ACD/P4AQBCC Bearing uses chrome steel for its rings and balls, offering a balance of durability and cost-effectiveness.

The phenolic cage provides lightweight stability, reducing friction compared to traditional metal cages.

With a dynamic radial load capacity of 84825 lbf, it outperforms many ceramic alternatives in heavy-duty scenarios.

Its moderate preload and matched arrangement ensure consistent performance across multiple bearings.

Application

Industrial Uses of 7028 ACD/P4AQBCC Bearing
The 7028 ACD/P4AQBCC Bearing is commonly used in high-precision machine tools, where its moderate preload and angular contact design ensure accurate performance. Its phenolic cage offers stability under high-speed operations, making it suitable for demanding industrial environments.

In automotive applications, 7028 ACD/P4AQBCC Bearing supports components like high-performance gearboxes, handling both radial and axial loads efficiently. The chrome steel construction provides durability, essential for long-term use in vehicles.

For automation systems, 7028 ACD/P4AQBCC Bearing is ideal for robotic arms, where its precision and matched arrangement enhance movement accuracy. The P4A tolerance class ensures reliable operation in repetitive tasks.

Medical imaging devices benefit from 7028 ACD/P4AQBCC Bearing’s smooth operation and low maintenance needs. Its open design allows for easy lubrication, crucial for maintaining performance in sensitive equipment.

In consumer electronics, 7028 ACD/P4AQBCC Bearing can be found in high-end printers, where its quiet operation and precision are valued. The metric sizing ensures compatibility with various international models.

Q&A

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