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Super Precision Angular Contact Ball Bearings 7221 CD/P4A

Super Precision Angular Contact Ball Bearings 7221 CD/P4A

The 7221 CD/P4A is a super precision angular contact ball bearing with a 105mm bore and 190mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 38700 lbf and operates smoothly at speeds up to 12000 RPM.

Its 15° contact angle and phenolic cage ensure stable performance under angular loads, while the open design allows for easy lubrication. The bearing is preload-ready, offering flexibility in setup.

Ideal for high-precision applications like machine tool spindles or aerospace components, it performs reliably in temperatures from -30°C to 110°C. Weighing 3.87kg, it’s robust yet manageable for its size.

This model is interchangeable with SKF bearings, making it a practical choice for replacements or upgrades. Compliant with P4 tolerance standards for precision engineering needs.

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Product Parameters

  • Part Number 7221 CD/P4A
  • 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 15°
  • 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 38700 lbf
  • Static Radial Load 34425 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 3.87 kg
  • Price（$） 1359.36
Super Precision Angular Contact Ball Bearings 7221 CD/P4A dimension drawing
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Features

Why Choose 7221 CD/P4A Bearing for Precision Tasks?

7221 CD/P4A Bearing features a 15° contact angle, optimised for high-precision angular contact applications.
Its chrome steel construction ensures durability and consistent performance under dynamic radial loads up to 38,700 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 12,000 rpm, it delivers reliable efficiency in demanding conditions.

Preloaded for precision, 7221 CD/P4A Bearing excels in applications requiring tight tolerance control.
Its open design allows easy lubrication, ensuring long service life with minimal maintenance.

Application

Common Applications of 7221 CD/P4A Bearing
In machine tools, 7221 CD/P4A Bearing handles high-speed spindle operations with its 15° contact angle, ensuring precise radial and axial load support. The phenolic cage reduces friction, making it suitable for continuous use.

Industrial Uses of 7221 CD/P4A Bearing
This bearing excels in conveyor systems where its P4 tolerance class maintains alignment under heavy loads. Its open design simplifies lubrication, extending service life in dusty environments.

Why Is 7221 CD/P4A Bearing Essential in Machinery?
For gearboxes, 7221 CD/P4A Bearing’s chrome steel construction withstands intense angular forces while maintaining smooth rotation. The 12,000 rpm rating makes it ideal for high-speed applications.

Perfect Fit for Automation: 7221 CD/P4A Bearing
In robotic arms, 7221 CD/P4A Bearing’s preload option minimises play, enhancing positional accuracy. Its metric sizing ensures compatibility with European and Asian automation systems.

Medical vs Industrial: Where 7221 CD/P4A Bearing Excels
While used in MRI scanners for its vibration-free operation, this bearing also supports industrial pumps due to its 34,425 lbf static load capacity. The temperature range suits diverse environments.

Q&A

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