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Super Precision Angular Contact Ball Bearings 71920 CB/HCP4A

Super Precision Angular Contact Ball Bearings 71920 CB/HCP4A

The 71920 CB/HCP4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from chrome steel for durability. It handles radial loads up to 4860 lbf and reaches speeds of 24,000 RPM, thanks to its ceramic balls and phenolic cage.

With a 15° contact angle and P4 tolerance class, it offers high accuracy for demanding applications. The open design allows easy lubrication, ensuring smooth operation in temperatures from -30°C to 110°C.

This bearing is interchangeable with SKF models, making it a versatile choice for replacements. Ideal for precision machinery like CNC spindles or high-speed robotics where accuracy and speed are crucial.

Weighing 0.8kg, it balances strength and performance. Available in matched sets for paired applications, it meets rigorous industry standards.

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Product Parameters

  • Part Number 71920 CB/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 37
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 4860 lbf
  • Static Radial Load 5040 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 24000 rpm
  • Weight 0.8 kg
  • Price（$） 123.66
Super Precision Angular Contact Ball Bearings 71920 CB/HCP4A dimension drawing
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Features

Performance Features of 71920 CB/HCP4A Bearing

71920 CB/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.
The phenolic cage ensures smooth operation, even at high speeds up to 24,000 rpm.
With a dynamic radial load capacity of 4860 lbf, it delivers reliable performance in precision tasks.

Application

Super Precision Angular Contact Ball Bearings 71920 CB/HCP4A are commonly used in high-speed machine tools, where their 15° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making them ideal for precision grinding applications.

In robotics, 71920 CB/HCP4A Bearings provide smooth motion control in articulated arms, thanks to their phenolic cage and P4 tolerance class. Their lightweight design also helps improve energy efficiency in automated systems.

For aerospace components, 71920 CB/HCP4A Bearings offer reliable performance in navigation systems, where consistent operation under varying temperatures is essential. The open seal design allows for easy lubrication, extending service life in demanding conditions.

Medical imaging devices benefit from 71920 CB/HCP4A Bearings’ low vibration and high-speed capabilities, ensuring clear and stable results. The chrome steel rings add durability, making them suitable for long-term use in diagnostic equipment.

In electric vehicle motors, 71920 CB/HCP4A Bearings support high RPM requirements while maintaining minimal noise levels. Their matched arrangement option further enhances alignment accuracy in compact motor designs.

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