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Super Precision Angular Contact Ball Bearings 7021 CD/P4A

Super Precision Angular Contact Ball Bearings 7021 CD/P4A

The 7021 CD/P4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 21510 lbf and operates smoothly at speeds up to 13000 RPM.

With a 15° contact angle and phenolic cage, it offers excellent stability and durability. The open design allows for easy lubrication, ensuring long service life.

This bearing is ideal for high-precision applications like machine tool spindles or medical equipment. Its P4 tolerance class ensures reliable performance in demanding conditions.

Weighing 1.59kg, it’s robust yet manageable for its size. Compliant with standard temperature ranges from -30°C to 110°C, it’s a versatile choice for various industrial uses.

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Product Parameters

  • Part Number 7021 CD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.01mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • 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 21510 lbf
  • Static Radial Load 21712 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 13000 rpm
  • Weight 1.59 kg
  • Price（$） 38.484
Super Precision Angular Contact Ball Bearings 7021 CD/P4A dimension drawing
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Features

Performance Features of 7021 CD/P4A Bearing

7021 CD/P4A Bearing is crafted with chrome steel rings and balls, offering high precision for angular contact applications.
Its 15° contact angle ensures efficient load distribution, enhancing performance in demanding conditions.

The phenolic cage maintains ball alignment, reducing friction and extending operational life.
With a dynamic radial load capacity of 21510 lbf, it handles heavy loads reliably.

Operating at speeds up to 13,000 rpm, 7021 CD/P4A Bearing balances speed and durability.
Its P4 tolerance class guarantees precision, making it suitable for high-accuracy machinery.

The open design allows for easy lubrication, ensuring smooth operation over time.
7021 CD/P4A Bearing works in temperatures from -30° to 110°C, adapting to various environments.

Application

Industrial Uses of 7021 CD/P4A Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design helps maintain accuracy during heavy cutting operations. The open seal allows for efficient lubrication, extending its lifespan in demanding environments.

Where Is 7021 CD/P4A Bearing Used?
You’ll often find it in automotive applications like high-performance gearboxes, where its 15° contact angle handles combined radial and axial loads smoothly. The phenolic cage reduces friction, making it ideal for high-speed scenarios.

Built for Heavy-Duty Use: 7021 CD/P4A Bearing
In robotics, this bearing supports articulated arms, ensuring precise movement thanks to its P4 tolerance class. The chrome steel construction provides durability, even in continuous operation.

Automotive vs Aerospace: Applications of 7021 CD/P4A Bearing
While it’s popular in car transmissions, this bearing also suits aerospace components like turbine shafts due to its high-speed capability. The lubricated design ensures reliable performance across different industries.

Perfect Fit for Automation: 7021 CD/P4A Bearing
In automated production lines, this bearing keeps conveyor systems running smoothly with minimal maintenance. Its 17.462 mm balls distribute loads evenly, reducing wear over time.

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