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Super Precision Angular Contact Ball Bearings 71905 ACE/HCP4A

Super Precision Angular Contact Ball Bearings 71905 ACE/HCP4A

The 71905 ACE/HCP4A is a super precision angular contact ball bearing with a 25mm bore and 42mm outer diameter, measuring just 9mm wide. Made from chrome steel and ceramic balls, it offers smooth operation and durability.

With a 25° contact angle, it handles both radial and axial loads efficiently, supporting up to 1141 lbf dynamically. Its phenolic cage ensures quiet performance at high speeds, reaching up to 83,000 RPM.

The open design allows easy lubrication, while the P4 tolerance class ensures precise alignment. Ideal for high-speed applications like spindles or precision tools.

Weighing only 0.036kg, it’s lightweight yet robust. Suitable for temperatures from -30°C to 110°C, making it versatile for various industrial uses.

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Product Parameters

  • Part Number 71905 ACE/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 25 mm
  • Bore Dia Tolerance -0.005mm to 0
  • Outer Dia 42 mm
  • Outer Dia Tolerance -0.006mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 16
  • 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 1141 lbf
  • Static Radial Load 596 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 83000 rpm
  • Weight 0.036 kg
  • Price（$） 162.567
Super Precision Angular Contact Ball Bearings 71905 ACE/HCP4A dimension drawing
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Features

Why Choose 71905 ACE/HCP4A Bearing for Precision Tasks?

71905 ACE/HCP4A Bearing features a 25° contact angle, ideal for high-precision angular contact applications.
Its ceramic balls and chrome steel rings ensure smooth operation with minimal friction.

The P4 tolerance class guarantees exceptional accuracy, making it suitable for demanding tasks.
With a maximum speed of 83,000 rpm, it delivers reliable performance in high-speed environments.

Phenolic cage material reduces weight while maintaining durability, enhancing efficiency.
Lubrication is pre-applied, ensuring ready-to-use convenience and long service life.

Application

Key Fields for 71905 ACE/HCP4A Bearing
71905 ACE/HCP4A Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for applications demanding smooth operation.

In robotics, 71905 ACE/HCP4A Bearing supports articulated arms, providing stability and durability in repetitive movements. Its phenolic cage offers lightweight performance, which is crucial for energy-efficient automation systems.

For medical imaging devices, 71905 ACE/HCP4A Bearing’s P4 tolerance class guarantees minimal vibration, essential for clear diagnostic results. The open design allows for easy lubrication, extending service life in critical healthcare environments.

Automotive enthusiasts appreciate 71905 ACE/HCP4A Bearing in performance gearboxes, where its high-speed capability enhances shifting precision. The matched arrangement option further optimises load distribution in compact drivetrain layouts.

In aerospace applications, 71905 ACE/HCP4A Bearing’s temperature resilience makes it suitable for auxiliary aircraft systems. Its chrome steel rings withstand variable pressures while maintaining reliable angular contact performance.

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