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Super Precision Angular Contact Ball Bearings 7228 ACD/HCP4A

Super Precision Angular Contact Ball Bearings 7228 ACD/HCP4A

The 7228 ACD/HCP4A is a super precision angular contact ball bearing with a 140mm bore and 250mm outer diameter, crafted from durable chrome steel and ceramic balls. It handles radial loads up to 47700 lbf and spins smoothly at speeds up to 9000 RPM.

Its 25° contact angle and phenolic cage ensure stable performance under angular loads, while the open design allows for easy lubrication. The bearing operates efficiently in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings and comes with optional preload and matched arrangements for enhanced precision. Ideal for high-speed applications like machine tool spindles or precision industrial equipment.

Weighing 6.92kg, it’s a robust choice for demanding environments. Compliant with P4 (ABEC-7) tolerance standards for reliable accuracy.

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Product Parameters

  • Part Number 7228 ACD/HCP4A
  • 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 Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 47700 lbf
  • Static Radial Load 51300 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 9000 rpm
  • Weight 6.92 kg
  • Price（$） 1952.19
Super Precision Angular Contact Ball Bearings 7228 ACD/HCP4A dimension drawing
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Features

Performance Features of 7228 ACD/HCP4A Bearing

7228 ACD/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage maintains ball alignment, ensuring smooth operation even at high speeds.
With a dynamic radial load capacity of 47,700 lbf, it handles demanding conditions reliably.

7228 ACD/HCP4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its P4 tolerance class ensures precision performance for critical applications.

The open design allows for easy lubrication, extending service life.
Weighing 6.92 kg, it balances strength and practicality in industrial settings.

Application

Practical Applications of 7228 ACD/HCP4A Bearing
7228 ACD/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it suitable for high-speed operations.

In automotive applications, 7228 ACD/HCP4A Bearing supports performance gearboxes and electric motor systems. Its phenolic cage provides stability under varying temperatures and loads.

For medical imaging devices, 7228 ACD/HCP4A Bearing’s P4 tolerance class guarantees smooth, quiet operation. The chrome steel rings enhance durability in critical diagnostic equipment.

Automation systems benefit from 7228 ACD/HCP4A Bearing’s matched arrangement, which simplifies installation in robotic arms. The open seal design allows for easy lubrication in continuous-use scenarios.

In consumer electronics, 7228 ACD/HCP4A Bearing’s compact size fits precision components like 3D printers. Its ceramic balls ensure minimal wear over extended periods.

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