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Super Precision Angular Contact Ball Bearings 7221 CDGB/P4A

Super Precision Angular Contact Ball Bearings 7221 CDGB/P4A

The 7221 CDGB/P4A is a super precision angular contact ball bearing with a 105mm bore and 190mm outer diameter, crafted from high-grade chrome steel. It features a 15° contact angle and is designed for light preload applications.

With a dynamic radial load capacity of 38700 lbf, it handles high-speed operations up to 16000 RPM smoothly. The phenolic cage ensures quiet and efficient performance, even under demanding conditions.

Its open design allows for easy lubrication, extending service life. The bearing operates reliably in temperatures ranging from -30°C to 110°C.

Ideal for precision machinery like spindles or CNC equipment, it comes in matched sets for versatile mounting options (back-to-back, face-to-face, or tandem). Weighing 3.87kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 7221 CDGB/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 36 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 26.988 mm
  • Ball Qty 15
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • 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°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 3.87 kg
Super Precision Angular Contact Ball Bearings 7221 CDGB/P4A dimension drawing
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Features

Performance Features of 7221 CDGB/P4A Bearing

7221 CDGB/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads up to 38,700 lbf.

The phenolic cage in 7221 CDGB/P4A Bearing reduces friction and enhances performance at speeds up to 16,000 rpm.
With a P4A tolerance class, it delivers precision in demanding industrial environments.

7221 CDGB/P4A Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its open design allows for easy lubrication, maintaining smooth operation over time.

The universal matching capability of 7221 CDGB/P4A Bearing supports flexible mounting configurations.
This makes it suitable for various precision engineering applications.

Application

Key Fields for 7221 CDGB/P4A Bearing
In high-precision machine tools, 7221 CDGB/P4A Bearing excels with its 15° contact angle, ensuring smooth rotation under radial and axial loads. The phenolic cage reduces friction, making it ideal for spindle applications.

Where Is 7221 CDGB/P4A Bearing Used?
You’ll often find 7221 CDGB/P4A Bearing in automotive transmissions, where its light preload and P4A tolerance class enhance gear shifting accuracy. Its chrome steel construction handles high speeds effortlessly.

Built for Heavy-Duty Use: 7221 CDGB/P4A Bearing
This bearing supports industrial pumps and compressors, thanks to its dynamic radial load capacity of 38700 lbf. The open design allows for easy relubrication in demanding environments.

Medical vs Industrial: Where 7221 CDGB/P4A Bearing Excels
While 7221 CDGB/P4A Bearing suits MRI scanners with its low vibration, it’s equally reliable in robotics. The tandem arrangement option adapts to complex motion systems seamlessly.

Perfect Fit for Automation: 7221 CDGB/P4A Bearing
In robotic arms, 7221 CDGB/P4A Bearing’s 16,000 rpm limit and phenolic cage ensure quiet, precise movement. Its universal matching feature simplifies assembly in modular designs.

Q&A

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