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Super Precision Angular Contact Ball Bearings 7221 ACD/HCP4A

Super Precision Angular Contact Ball Bearings 7221 ACD/HCP4A

The 7221 ACD/HCP4A is a super precision angular contact ball bearing with a 105mm bore and 190mm outer diameter, crafted from high-quality chrome steel and ceramic balls. It handles radial loads up to 36675 lbf and operates smoothly at speeds up to 12000 RPM.

Its 25° contact angle and phenolic cage ensure stable performance under angular loads, while the open design allows for easy lubrication. The bearing is preload-ready and can be matched for paired arrangements.

With a P4 tolerance class, it offers exceptional accuracy for demanding applications like machine tool spindles or high-speed robotics. The ceramic balls reduce friction and heat buildup, extending service life.

Weighing 3.14kg, this bearing works in temperatures from -30°C to 110°C. It’s interchangeable with SKF equivalents, making it a versatile choice for precision engineering needs.

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Product Parameters

  • Part Number 7221 ACD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 36 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 26.988 mm
  • Ball Qty 15
  • 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 36675 lbf
  • Static Radial Load 32850 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 3.14 kg
  • Price（$） 1359.432
Super Precision Angular Contact Ball Bearings 7221 ACD/HCP4A dimension drawing
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Features

Performance Features of 7221 ACD/HCP4A Bearing

7221 ACD/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and ceramic balls enhance durability while reducing friction.

With a dynamic radial load capacity of 36675 lbf, it handles demanding conditions reliably.
Its phenolic cage ensures smooth operation at speeds up to 12,000 rpm.

The P4 tolerance class guarantees high precision, making it suitable for critical applications.
Lubrication is pre-applied, ensuring ready-to-use convenience and extended service life.

Application

Industrial Uses of 7221 ACD/HCP4A Bearing
The 7221 ACD/HCP4A Bearing is commonly used in high-speed machine tools, where its precision and angular contact design ensure accurate performance. Its ceramic balls reduce friction, making it suitable for demanding industrial environments.

What Makes 7221 ACD/HCP4A Bearing a Preferred Choice?
In automotive applications, 7221 ACD/HCP4A Bearing excels in gearbox systems, providing smooth operation under heavy loads. The phenolic cage adds durability, making it a reliable choice for long-term use.

Perfect Fit for Automation: 7221 ACD/HCP4A Bearing
For robotics and automation, 7221 ACD/HCP4A Bearing offers the precision needed for repetitive tasks. Its open design allows for easy lubrication, ensuring consistent performance in automated systems.

Medical vs Industrial: Where 7221 ACD/HCP4A Bearing Excels
In medical imaging devices, 7221 ACD/HCP4A Bearing’s high tolerance class ensures reliable operation. Meanwhile, in industrial settings, its robust construction handles heavy radial loads with ease.

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