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Super Precision Angular Contact Ball Bearings 7028 ACD/P4ATBTB

Super Precision Angular Contact Ball Bearings 7028 ACD/P4ATBTB

The 7028 ACD/P4ATBTB 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 70200 lbf and operates smoothly at speeds up to 6300 RPM.

Its 25° contact angle and matched set of three bearings (arranged > TBT) provide excellent stability for angular loads. The phenolic cage ensures quiet operation and long service life.

Preloaded lightly for precision, this bearing is ideal for high-speed applications like machine tool spindles or aerospace systems. It works reliably in temperatures from -30°C to 110°C.

Weighing 10.3kg, it’s robust yet designed for precision performance. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 7028 ACD/P4ATBTB
  • 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 99 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 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 70200 lbf
  • Static Radial Load 106875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 6300 rpm
  • Weight 10.3 kg
Super Precision Angular Contact Ball Bearings 7028 ACD/P4ATBTB dimension drawing
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Features

Performance Features of 7028 ACD/P4ATBTB Bearing

7028 ACD/P4ATBTB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 70,200 lbf.

The phenolic cage ensures smooth operation, reducing friction and noise in high-speed environments.
With a maximum speed of 6,300 rpm, it balances precision and performance effortlessly.

Preloaded lightly for stability, 7028 ACD/P4ATBTB Bearing excels in matched arrangements of three bearings.
Its P4A tolerance class guarantees consistent accuracy for demanding industrial uses.

Application

Industrial Uses of 7028 ACD/P4ATBTB Bearing
In machine tools, 7028 ACD/P4ATBTB Bearing ensures high precision for spindle operations, thanks to its 25° contact angle and P4A tolerance class. The matched set of three bearings provides stability under radial loads.

Where Is 7028 ACD/P4ATBTB Bearing Used?
You’ll often find 7028 ACD/P4ATBTB Bearing in high-speed spindles for CNC machines, where its phenolic cage reduces friction. The open design allows for efficient lubrication, extending service life.

Built for Heavy-Duty Use: 7028 ACD/P4ATBTB Bearing
This bearing handles dynamic radial loads up to 70,200 lbf, making it suitable for industrial gearboxes. Its chrome steel construction ensures durability in demanding environments.

Automotive vs Aerospace: Applications of 7028 ACD/P4ATBTB Bearing
In automotive testing rigs, 7028 ACD/P4ATBTB Bearing supports precise measurements, while in aerospace, it aids in actuator systems. The light preload ensures smooth performance in both fields.

Perfect Fit for Automation: 7028 ACD/P4ATBTB Bearing
Robotic arms benefit from 7028 ACD/P4ATBTB Bearing’s angular contact design, which maintains accuracy during repetitive movements. The metric sizing fits seamlessly into European automation systems.

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