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Super Precision Angular Contact Ball Bearings 7028 CD/P4ADBA

Super Precision Angular Contact Ball Bearings 7028 CD/P4ADBA

The 7028 CD/P4ADBA is a super precision angular contact ball bearing, measuring 140mm by 210mm by 66mm, crafted from durable chrome steel. It features a 15° contact angle and comes in a matched set of two bearings for balanced performance.

This bearing handles radial loads up to 55575 lbf and operates smoothly at speeds up to 6300 RPM. Its phenolic cage ensures quiet and efficient rotation, even under demanding conditions.

The open design allows for easy lubrication, while the extra-light preload (Class A) ensures minimal friction. It performs reliably in temperatures ranging from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or industrial gearboxes. Its P4A tolerance class guarantees exceptional accuracy. Weighing 6.84kg, it’s robust yet manageable for its size.

This model is interchangeable with SKF bearings, making it a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 7028 CD/P4ADBA
  • 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 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • 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
Super Precision Angular Contact Ball Bearings 7028 CD/P4ADBA dimension drawing
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Features

Performance Features of 7028 CD/P4ADBA Bearing

7028 CD/P4ADBA 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 55575 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 6,300 rpm, it balances precision and performance in demanding conditions.

Preloaded for extra light class A, 7028 CD/P4ADBA Bearing offers consistent accuracy in matched arrangements.
Its open design allows for easy lubrication, ensuring long-term reliability.

Operating between -30°C to 110°C, 7028 CD/P4ADBA Bearing performs reliably in varied temperature environments.
The P4A tolerance class guarantees high precision for critical applications.

Application

Industrial Uses of 7028 CD/P4ADBA Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability in heavy cutting operations.

Where Is 7028 CD/P4ADBA Bearing Used?
You’ll often find it in automotive transmissions, supporting smooth gear shifts under radial and axial loads. Its phenolic cage reduces friction, making it ideal for high-speed applications.

Built for Heavy-Duty Use: 7028 CD/P4ADBA Bearing
In wind turbine systems, this bearing handles both radial and thrust loads efficiently. The chrome steel construction offers durability in harsh outdoor conditions.

Automotive vs Aerospace: Applications of 7028 CD/P4ADBA Bearing
In cars, it’s used in wheel hubs for precise handling, while in aircraft, it supports auxiliary power units. The P4A tolerance class ensures reliability in both environments.

Perfect Fit for Automation: 7028 CD/P4ADBA Bearing
Robotic arms benefit from its low-friction design, enabling smooth, precise movements. The extra-light preload reduces energy consumption in continuous operation.

Q&A

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