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Super Precision Angular Contact Ball Bearings 7228 ACD/P4AQBTB

Super Precision Angular Contact Ball Bearings 7228 ACD/P4AQBTB

The 7228 ACD/P4AQBTB is a super precision angular contact ball bearing with a 140mm bore and 250mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 125775 lbf and operates smoothly at speeds up to 11000 RPM.

Its 25° contact angle and matched arrangement of four bearings ensure stability and precision in demanding applications. The phenolic cage offers durability while keeping the weight manageable at 32.6kg.

Designed for light preload (Class B), this bearing excels in high-speed scenarios like machine tool spindles or precision equipment. Its open design allows for easy lubrication and maintenance.

With a temperature range of -30°C to 110°C, it’s suitable for various industrial environments. The P4A tolerance class guarantees exceptional accuracy, making it interchangeable with SKF bearings for reliable replacements.

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Product Parameters

  • Part Number 7228 ACD/P4AQBTB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 250 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 168 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 18
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <>>> QBT
  • Number Of Bearings In Matched Set 4
  • 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 125775 lbf
  • Static Radial Load 205875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 32.6 kg
Super Precision Angular Contact Ball Bearings 7228 ACD/P4AQBTB dimension drawing
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Features

How Is 7228 ACD/P4AQBTB Bearing Engineered for Reliability?

7228 ACD/P4AQBTB Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.

The chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 125775 lbf, it delivers reliable performance in precision applications.

The P4A tolerance class guarantees high accuracy, making it suitable for demanding industrial uses.

Application

Industrial Uses of 7228 ACD/P4AQBTB Bearing
7228 ACD/P4AQBTB Bearing is commonly used in high-precision machine tools, where its angular contact design handles both radial and axial loads efficiently. The matched set of four bearings ensures stability in demanding industrial environments.

In aerospace applications, 7228 ACD/P4AQBTB Bearing supports components like helicopter transmissions, thanks to its light preload and high-speed capability. The phenolic cage reduces friction, making it suitable for long-duration flights.

For automation systems, 7228 ACD/P4AQBTB Bearing works well in robotic arms, providing smooth movement with minimal maintenance. Its P4A tolerance class guarantees consistent performance in repetitive tasks.

Medical imaging devices benefit from 7228 ACD/P4AQBTB Bearing’s precision, ensuring accurate positioning in scanners. The chrome steel construction offers durability in sterile environments.

In electric vehicle motors, 7228 ACD/P4AQBTB Bearing handles high rotational speeds while maintaining low noise levels. The lubricated design extends service life, reducing downtime for maintenance.

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