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Super Precision Angular Contact Ball Bearings 7221 CDGA/P4A

Super Precision Angular Contact Ball Bearings 7221 CDGA/P4A

The 7221 CDGA/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 16000 RPM.

Its 15° contact angle and extra light preload ensure precise performance, while the phenolic cage offers durability. The bearing works in temperatures from -30°C to 110°C, making it versatile for various conditions.

This model is interchangeable with SKF bearings and comes in a set of two, suitable for universal matching in back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tools or spindle drives.

Weighing 3.87kg, it’s robust yet manageable for its size. Compliant with P4A tolerance class for exceptional accuracy.

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Product Parameters

  • Part Number 7221 CDGA/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 Extra light / Class A
  • 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 CDGA/P4A dimension drawing
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Features

How Does 7221 CDGA/P4A Bearing Ensure Precision in High-Speed Applications?

7221 CDGA/P4A Bearing features a 15° contact angle, optimised for angular contact loads and high-speed performance.
Its chrome steel rings and balls provide excellent durability, while the phenolic cage reduces friction.

With a maximum speed of 16,000 rpm, 7221 CDGA/P4A Bearing maintains precision even under demanding conditions.
The P4A tolerance class ensures tight dimensional control for reliable operation.

7221 CDGA/P4A Bearing’s dynamic radial load capacity of 38,700 lbf makes it suitable for heavy-duty applications.
Its universal matching capability allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.

The open design of 7221 CDGA/P4A Bearing simplifies lubrication and maintenance.
Its temperature range of -30°C to 110°C ensures consistent performance in various environments.

Application

Super Precision Angular Contact Ball Bearings 7221 CDGA/P4A is commonly used in high-speed machine tools, where its 15° contact angle ensures smooth rotation and precise positioning. The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

In automotive applications, 7221 CDGA/P4A supports components like electric motors and gearboxes, thanks to its extra light preload and high dynamic radial load capacity. Its metric sizing ensures compatibility with a variety of vehicle designs.

For automation systems, 7221 CDGA/P4A excels in robotic arms and CNC machines, where its P4A tolerance class guarantees accuracy. The chrome steel construction provides durability in continuous operation scenarios.

Medical imaging devices benefit from 7221 CDGA/P4A’s reliability and low vibration, ensuring clear and consistent performance. The temperature range of -30°C to 110°C makes it adaptable to different environments.

In consumer electronics, 7221 CDGA/P4A can be found in high-end printers and scanners, where its precision and smooth operation enhance device longevity. The lubricated design reduces maintenance needs for everyday use.

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