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Super Precision Angular Contact Ball Bearings 7028 ACD/P4ADBC

Super Precision Angular Contact Ball Bearings 7028 ACD/P4ADBC

The 7028 ACD/P4ADBC is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from high-quality chrome steel. It measures 140mm by 210mm by 66mm, offering a compact yet robust design for demanding applications.

With a 25° contact angle and moderate preload, it handles both radial and axial loads efficiently, supporting up to 52650 lbf dynamically. It spins smoothly at speeds up to 11000 RPM, making it suitable for high-performance machinery.

The matched pair arrangement (DB) ensures balanced load distribution, while the phenolic cage enhances durability. Its open design allows for easy lubrication and maintenance.

Ideal for precision equipment like machine tools or spindles, this bearing operates reliably in temperatures from -30°C to 110°C. Weighing 6.84kg, it’s a sturdy choice for industrial use. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 7028 ACD/P4ADBC
  • 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 66 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 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • 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 52650 lbf
  • Static Radial Load 70875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 6.84 kg
Super Precision Angular Contact Ball Bearings 7028 ACD/P4ADBC dimension drawing
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Features

Performance Features of 7028 ACD/P4ADBC Bearing

7028 ACD/P4ADBC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 52,650 lbf.

With a maximum speed of 11,000 rpm, it delivers smooth and efficient performance.

The phenolic cage ensures stability and reduces friction, extending the bearing’s service life.

Application

Industrial Uses of 7028 ACD/P4ADBC Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design handles both radial and axial loads efficiently. The moderate preload ensures stability during high-speed operations, making it suitable for spindle applications.

Where Is 7028 ACD/P4ADBC Bearing Used?
You’ll often find 7028 ACD/P4ADBC Bearing in automotive transmissions, where its phenolic cage reduces friction and heat buildup. Its P4A tolerance class guarantees precise alignment, crucial for smooth gear shifts.

Built for Heavy-Duty Use: 7028 ACD/P4ADBC Bearing
In robotics, 7028 ACD/P4ADBC Bearing supports articulated arms, thanks to its matched arrangement for balanced load distribution. The chrome steel construction ensures long service life even in continuous operation.

Automotive vs Aerospace: Applications of 7028 ACD/P4ADBC Bearing
While automotive systems benefit from its high-speed capabilities, aerospace applications rely on 7028 ACD/P4ADBC Bearing for its precision in flight control mechanisms. The temperature range suits both environments well.

Essential Roles of 7028 ACD/P4ADBC Bearing
Medical imaging devices use 7028 ACD/P4ADBC Bearing for its smooth rotation and low noise. The open design allows easy lubrication, maintaining performance in critical diagnostic equipment.

Q&A

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