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Super Precision Angular Contact Ball Bearings 7228 ACD/P4A

Super Precision Angular Contact Ball Bearings 7228 ACD/P4A

The 7228 ACD/P4A 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 47700 lbf and operates smoothly at speeds up to 7500 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and low friction. The open design allows for easy lubrication, ensuring long service life.

This bearing is ideal for high-precision applications like machine tool spindles or industrial pumps. Its P4 tolerance class ensures reliable performance in demanding conditions.

Weighing 8.14kg, it’s robust yet suitable for applications where precision and durability are key. The temperature range of -30°C to 110°C makes it versatile for various environments.

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Product Parameters

  • Part Number 7228 ACD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.01mm to 0
  • Outer Dia 250 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 42 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 18
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 47700 lbf
  • Static Radial Load 51300 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 7500 rpm
  • Weight 8.14 kg
  • Price（$） 1951.866
Super Precision Angular Contact Ball Bearings 7228 ACD/P4A dimension drawing
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Features

Performance Features of 7228 ACD/P4A Bearing

7228 ACD/P4A Bearing is designed with a 25° 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 47,700 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 7,500 rpm, it balances precision and performance in demanding conditions.

7228 ACD/P4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its P4 tolerance class ensures high precision, making it suitable for critical applications.

Application

Key Fields for 7228 ACD/P4A Bearing
7228 ACD/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The P4 tolerance class makes it suitable for applications demanding tight control over radial and axial movements.

In aerospace components, 7228 ACD/P4A Bearing handles both radial and thrust loads efficiently, thanks to its 25° contact angle. Its phenolic cage reduces friction, which is ideal for high-speed operations in aircraft systems.

For industrial robotics, 7228 ACD/P4A Bearing provides reliable performance in articulated arms and rotary joints. The chrome steel construction offers durability, while the open design allows for easy lubrication in continuous operation.

Medical imaging devices benefit from 7228 ACD/P4A Bearing’s precision, ensuring smooth rotation in CT scanners and MRI machines. The lubricated design minimises maintenance needs in critical healthcare environments.

In automotive testing equipment, 7228 ACD/P4A Bearing supports precise measurements during engine and transmission analysis. Its high dynamic load capacity makes it a dependable choice for rigorous testing conditions.

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