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Super Precision Angular Contact Ball Bearings 7221 ACDGB/P4A

Super Precision Angular Contact Ball Bearings 7221 ACDGB/P4A

The 7221 ACDGB/P4A is a super precision angular contact ball bearing with a 105mm bore and 190mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 36675 lbf and operates smoothly at speeds up to 16000 RPM.

Its 25° contact angle and light preload ensure accurate performance, while the phenolic cage offers quiet operation. The bearing works well in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings and comes in a set of two, suitable for universal matching. Ideal for high-precision applications like machine tools or spindles where angular contact is needed.

Weighing 3.87kg, it’s robust yet designed for precision. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 7221 ACDGB/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 25°
  • 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 36675 lbf
  • Static Radial Load 32850 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 ACDGB/P4A dimension drawing
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Features

Performance Features of 7221 ACDGB/P4A Bearing

7221 ACDGB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure high durability under dynamic radial loads up to 36675 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 16,000 rpm, it delivers reliable performance in high-speed scenarios.

7221 ACDGB/P4A Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its precision P4A tolerance class ensures consistent performance in demanding conditions.

The open design allows for easy lubrication, extending service life and reducing maintenance needs.
Weighing 3.87 kg, it balances strength and practicality for various industrial applications.

Application

Common Applications of 7221 ACDGB/P4A Bearing
7221 ACDGB/P4A Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The light preload and P4A tolerance class make it suitable for applications demanding minimal vibration.

In automotive systems, 7221 ACDGB/P4A Bearing supports components like wheel hubs and transmissions, handling both radial and axial loads efficiently. Its chrome steel construction provides durability under demanding driving conditions.

For robotics, 7221 ACDGB/P4A Bearing offers smooth motion in articulated arms and joints, thanks to its phenolic cage reducing friction. The open design allows for easy lubrication, extending service life in continuous operation.

In aerospace applications, 7221 ACDGB/P4A Bearing is chosen for its reliability in flight control systems, where consistent performance is critical. The temperature range ensures stability even under extreme conditions.

7221 ACDGB/P4A Bearing also finds use in medical imaging devices, where its precision ensures accurate positioning of components. The high dynamic load capacity makes it a dependable choice for long-term use.

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