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Super Precision Angular Contact Ball Bearings 71909 ACB/HCP4A

Super Precision Angular Contact Ball Bearings 71909 ACB/HCP4A

The 71909 ACB/HCP4A is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, designed for high-speed applications. It features a 25° contact angle and is made from durable chrome steel with ceramic balls for smooth operation.

This bearing handles radial loads up to 1580 lbf and can reach speeds of 45,000 RPM, making it suitable for demanding tasks. Its phenolic cage ensures stability and reduces friction during high-speed rotation.

The open design allows for easy lubrication, while the P4 tolerance class guarantees precise performance. Ideal for machine tools or precision instruments where accuracy and speed are crucial.

Weighing just 0.13kg, it’s lightweight yet robust. Compatible with SKF bearings, it’s a reliable choice for replacements or upgrades in industrial settings.

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Product Parameters

  • Part Number 71909 ACB/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 27
  • Contact Angle 25°
  • 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 1580 lbf
  • Static Radial Load 1238 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 45000 rpm
  • Weight 0.13 kg
  • Price（$） 324.72
Super Precision Angular Contact Ball Bearings 71909 ACB/HCP4A dimension drawing
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Features

Performance Features of 71909 ACB/HCP4A Bearing

71909 ACB/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls reduce friction, enhancing precision and speed capabilities.

The phenolic cage maintains ball alignment, ensuring smooth operation even at high speeds up to 45,000 rpm.
With a dynamic radial load capacity of 1580 lbf, it handles demanding conditions reliably.

71909 ACB/HCP4A Bearing’s P4 tolerance class guarantees high precision, suitable for critical applications.
Its open design allows for easy lubrication, extending service life in various temperature ranges.

The matched arrangement option provides flexibility for complex installations.
Weighing just 0.13 kg, it offers a balance of strength and lightweight design.

Application

How Does 71909 ACB/HCP4A Bearing Improve Performance?
71909 ACB/HCP4A Bearing is commonly used in high-speed machine tools, where its 25° contact angle ensures smooth operation under radial and axial loads. The ceramic balls reduce friction, making it ideal for precision applications.

In robotics, 71909 ACB/HCP4A Bearing provides reliable support for articulated arms, thanks to its phenolic cage and P4 tolerance class. This combination ensures consistent performance in automated production lines.

For medical imaging devices, 71909 ACB/HCP4A Bearing’s chrome steel rings and ceramic balls offer durability and low noise. Its open design allows for easy lubrication, extending service life in critical equipment.

What Makes 71909 ACB/HCP4A Bearing a Preferred Choice?
71909 ACB/HCP4A Bearing excels in aerospace applications, where its matched arrangement and preload options enhance stability. The high-speed capability (up to 45,000 rpm) makes it suitable for turbine systems.

In consumer electronics like high-end printers, 71909 ACB/HCP4A Bearing’s precision reduces vibration, ensuring quiet operation. Its metric sizing fits seamlessly into compact designs.

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