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Super Precision Angular Contact Ball Bearings 7028 ACD/P4ATGA

Super Precision Angular Contact Ball Bearings 7028 ACD/P4ATGA

The 7028 ACD/P4ATGA is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, measuring 99mm in width. Made from chrome steel, it’s designed for high accuracy and durability.

With a 25° contact angle, it handles radial loads up to 70200 lbf and spins smoothly at speeds up to 6300 RPM. Its extra-light preload ensures minimal friction during operation.

The open design and phenolic cage make it easy to maintain, while the universal matching allows flexible arrangements like back-to-back or face-to-face. Ideal for machine tools or high-precision industrial applications.

Weighing 10.3kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for reliable replacements. Works well in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 7028 ACD/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 25°
  • 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 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/P4ATGA dimension drawing
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Features

How Does 7028 ACD/P4ATGA Bearing Ensure Precision in High-Speed Applications?

7028 ACD/P4ATGA Bearing features a 25° contact angle, optimising load distribution for smooth operation.
The chrome steel construction enhances durability while maintaining high precision under dynamic radial loads up to 70,200 lbf.

With a maximum speed of 6,300 rpm, it suits demanding applications requiring stability and accuracy.
The phenolic cage minimises friction, contributing to quieter performance and extended service life.

Universal matching allows flexible arrangement (back-to-back, face-to-face, or tandem) for varied needs.
Its P4A tolerance class ensures consistent performance in precision-critical environments.

Application

Key Fields for 7028 ACD/P4ATGA Bearing
In machine tools, 7028 ACD/P4ATGA Bearing ensures high precision during heavy cutting operations, thanks to its angular contact design and P4A tolerance class. The universal matching feature allows flexible arrangement in back-to-back or face-to-face configurations.

Where Is 7028 ACD/P4ATGA Bearing Used?
You’ll often spot 7028 ACD/P4ATGA Bearing in high-speed spindles for CNC machines, where its extra light preload reduces friction and heat buildup. The phenolic cage also dampens vibrations, ideal for smooth finishes.

Built for Heavy-Duty Use: 7028 ACD/P4ATGA Bearing
This bearing handles radial and axial loads effortlessly in industrial gearboxes, with chrome steel rings offering long-lasting performance. Its 22.225 mm balls distribute stress evenly, even at 6,300 rpm.

Automotive vs Aerospace: Applications of 7028 ACD/P4ATGA Bearing
In automotive testing rigs, 7028 ACD/P4ATGA Bearing supports precise measurements, while aerospace uses it in landing gear actuators for reliable angular load capacity. The 140 mm bore fits robust shafts in both fields.

Perfect Fit for Automation: 7028 ACD/P4ATGA Bearing
Robotic arms benefit from 7028 ACD/P4ATGA Bearing’s low friction and thermal stability, ensuring repeatable movements in assembly lines. The matched set of three bearings simplifies installation in tandem arrangements.

Q&A

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