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Super Precision Angular Contact Ball Bearings 7028 CD/P4ATGA

Super Precision Angular Contact Ball Bearings 7028 CD/P4ATGA

The 7028 CD/P4ATGA 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 74700 lbf and operates smoothly at speeds up to 6300 RPM.

Its 15° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face. The phenolic cage ensures durability while keeping the bearing lightweight.

This bearing is preloaded for extra light performance, making it ideal for high-precision machinery. It works reliably in temperatures from -30°C to 110°C.

With a tolerance class of P4A, it’s interchangeable with SKF bearings. Suitable for applications like machine tools or spindles where precision and stability are key. Weighing 10.3kg, it’s robust yet manageable for its size.

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Product Parameters

  • Part Number 7028 CD/P4ATGA
  • 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 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 74700 lbf
  • Static Radial Load 112500 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 CD/P4ATGA dimension drawing
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Features

Performance Features of 7028 CD/P4ATGA Bearing

7028 CD/P4ATGA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 74,700 lbf.

The phenolic cage in 7028 CD/P4ATGA Bearing reduces friction and maintains stability at speeds up to 6,300 rpm.
Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.

With a P4A tolerance class, 7028 CD/P4ATGA Bearing delivers precise performance in demanding conditions.
Its extra light preload ensures smooth operation while minimising wear over time.

The open design of 7028 CD/P4ATGA Bearing simplifies lubrication, extending service life.
It operates reliably within a temperature range of -30°C to 110°C.

Application

Industrial Uses of 7028 CD/P4ATGA Bearing
7028 CD/P4ATGA Bearing is commonly used in high-precision machine tools, where its 15° contact angle ensures accurate radial and axial load handling. The universal matching feature allows flexible arrangements, making it suitable for complex setups.

In aerospace applications, 7028 CD/P4ATGA Bearing supports components like turbine shafts, thanks to its phenolic cage and chrome steel construction. The extra-light preload helps maintain smooth operation under demanding conditions.

For automation systems, 7028 CD/P4ATGA Bearing excels in robotic arms and CNC machines, where its P4A tolerance class guarantees consistent performance. The lubricated design also reduces friction, extending service life in high-speed scenarios.

Medical imaging devices benefit from 7028 CD/P4ATGA Bearing’s precision, ensuring reliable operation in MRI and CT scanners. Its temperature range of -30°C to 110°C makes it adaptable to various clinical environments.

In electric motors, 7028 CD/P4ATGA Bearing’s dynamic radial load capacity of 74700 lbf ensures durability. The open seal design allows for easy maintenance, making it a practical choice for long-term use.

Q&A

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