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Super Precision Angular Contact Ball Bearings 7028 CD/P4ADGA

Super Precision Angular Contact Ball Bearings 7028 CD/P4ADGA

The 7028 CD/P4ADGA 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 55575 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 quiet, long-lasting performance even in demanding conditions.

This bearing is lubricated for easy maintenance and works in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or industrial pumps where accuracy is key.

Weighing 6.84kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for reliable replacements.

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Product Parameters

  • Part Number 7028 CD/P4ADGA
  • 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 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 55575 lbf
  • Static Radial Load 75375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 6300 rpm
  • Weight 6.84 kg
  • Price（$） 1458.711
Super Precision Angular Contact Ball Bearings 7028 CD/P4ADGA dimension drawing
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Features

Performance Features of 7028 CD/P4ADGA Bearing

7028 CD/P4ADGA Bearing is designed with a 15° contact angle, offering precise angular contact performance.
Its chrome steel rings and phenolic cage ensure durability and smooth operation under high radial loads.

With a dynamic radial load capacity of 55575 lbf, it handles demanding applications with ease.
The extra light preload (Class A) enhances precision, making it suitable for high-speed operations up to 6,300 rpm.

Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.
This feature provides versatility in various industrial setups, ensuring optimal performance.

The open seal design simplifies maintenance while the P4A tolerance class guarantees consistent accuracy.
Operating between -30°C to 110°C, it performs reliably in diverse temperature conditions.

Application

Key Fields for 7028 CD/P4ADGA Bearing
In high-precision machine tools, 7028 CD/P4ADGA Bearing ensures smooth spindle rotation, thanks to its 15° contact angle and P4A tolerance class. The universal matching design allows flexible arrangements for back-to-back or face-to-face setups.

Where Is 7028 CD/P4ADGA Bearing Used?
You’ll often find 7028 CD/P4ADGA Bearing in aerospace applications, where its extra-light preload reduces friction in critical components. The phenolic cage also dampens vibrations during high-speed operations.

Built for Heavy-Duty Use: 7028 CD/P4ADGA Bearing
This bearing handles heavy radial loads in industrial gearboxes, with a dynamic load capacity of 55,575 lbf. Its chrome steel construction ensures long service life even in demanding environments.

Automotive vs Aerospace: Applications of 7028 CD/P4ADGA Bearing
In automotive testing rigs, 7028 CD/P4ADGA Bearing provides accurate load measurement, while in aerospace, it supports rotor assemblies. The tandem arrangement option makes it versatile for both fields.

Perfect Fit for Automation: 7028 CD/P4ADGA Bearing
Robotic arms benefit from 7028 CD/P4ADGA Bearing’s low friction and high rigidity, ensuring precise movement. The open seal design simplifies relubrication in continuous-operation systems.

Q&A

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