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Super Precision Angular Contact Ball Bearings S7021 CD/P4A

Super Precision Angular Contact Ball Bearings S7021 CD/P4A

The S7021 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 8000 RPM.

Its sealed design keeps lubrication in and contaminants out, while the phenolic cage ensures durability. The 15° contact angle provides excellent stability for angular loads.

This bearing is interchangeable with SKF models and comes in matched sets for easy installation. Ideal for high-precision applications like machine tools or spindle drives.

Weighing 1.61kg, it’s robust yet manageable. Compliant with P4 tolerance standards for exceptional accuracy in demanding environments.

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Product Parameters

  • Part Number S7021 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 Sealed
  • Matched Arrangement Available
  • 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 8000 rpm
  • Weight 1.61 kg
  • Price（$） 144.27
Super Precision Angular Contact Ball Bearings S7021 CD/P4A dimension drawing
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Features

How Is S7021 CD/P4A Bearing Engineered for Reliability?

S7021 CD/P4A Bearing features a 15° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 21510 lbf, it handles demanding conditions with ease.

The P4 tolerance class guarantees precision, making it suitable for high-speed operations up to 8,000 rpm.

Application

Industrial Uses of S7021 CD/P4A Bearing
S7021 CD/P4A Bearing is commonly used in high-precision machine tools, where its 15° contact angle ensures accurate radial and axial load distribution. The sealed design helps maintain lubrication, reducing maintenance needs in demanding environments.

In robotics, S7021 CD/P4A Bearing supports articulated arms, providing smooth motion and long service life. Its phenolic cage offers good heat resistance, making it suitable for continuous operation.

For aerospace applications, S7021 CD/P4A Bearing’s P4 tolerance class ensures reliability in navigation systems and flight controls. The matched arrangement option allows for custom configurations to meet specific load requirements.

Automotive vs Aerospace: Applications of S7021 CD/P4A Bearing
In automotive systems, S7021 CD/P4A Bearing is ideal for high-performance gearboxes, where its dynamic load capacity enhances durability. The metric sizing ensures compatibility with a range of vehicle designs.

For aerospace, S7021 CD/P4A Bearing excels in avionics and actuator systems, where precision and reliability are critical. The chrome steel construction provides excellent resistance to wear and fatigue.

Q&A

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