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Super Precision Angular Contact Ball Bearings 7021 CDGA/P4A

Super Precision Angular Contact Ball Bearings 7021 CDGA/P4A

The 7021 CDGA/P4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and is designed for angular contact loads, handling up to 21510 lbf dynamically.

Its open design and phenolic cage ensure smooth operation at speeds up to 16000 RPM, making it suitable for high-performance applications. The bearing operates efficiently in temperatures ranging from -30°C to 110°C.

With an extra light preload (Class A), it offers precise movement and minimal friction. This model is universal matching, allowing configurations like back-to-back, face-to-face, or tandem setups.

Ideal for precision machinery, spindles, or high-speed equipment where accuracy and reliability are crucial. Weighing 1.59kg, it’s a robust yet manageable component for demanding environments. Compliant with P4A tolerance standards for exceptional performance.

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Product Parameters

  • Part Number 7021 CDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • 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 21510 lbf
  • Static Radial Load 21712 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.59 kg
  • Price（$） 326.142
Super Precision Angular Contact Ball Bearings 7021 CDGA/P4A dimension drawing
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Features

Performance Features of 7021 CDGA/P4A Bearing

7021 CDGA/P4A Bearing is designed with a 15° contact angle, optimising performance in angular contact applications.
Its chrome steel rings and balls ensure durability and resistance to wear under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a dynamic radial load capacity of 21510 lbf, it handles demanding conditions reliably.

7021 CDGA/P4A Bearing operates efficiently at speeds up to 16,000 rpm, balancing precision and speed.
Its extra light preload (Class A) ensures minimal friction, extending service life.

The open design allows for easy lubrication, maintaining performance in temperatures from -30°C to 110°C.
This makes it suitable for a wide range of industrial applications.

Universal matching options (back-to-back, face-to-face, or tandem) provide flexibility in assembly.
This feature enhances its adaptability to various mechanical configurations.

Application

Key Fields for 7021 CDGA/P4A Bearing
In industrial settings, 7021 CDGA/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate radial and axial load handling. The open seal type allows for efficient lubrication, extending service life in demanding conditions.

Automotive applications benefit from 7021 CDGA/P4A Bearing in components like electric motor shafts, where its extra light preload enhances performance. The phenolic cage material reduces friction, making it suitable for high-speed operations.

For medical imaging devices, 7021 CDGA/P4A Bearing’s P4A tolerance class provides the precision needed for smooth, consistent movement. Its chrome steel construction ensures durability in critical healthcare equipment.

In robotics, 7021 CDGA/P4A Bearing supports articulated arms, offering reliable performance under varying loads. The universal matching feature allows flexible configurations, ideal for complex automation systems.

Household appliances like high-end washing machines use 7021 CDGA/P4A Bearing for quiet, efficient operation. Its balanced design minimises vibration, enhancing user comfort in daily use.

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