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Super Precision Angular Contact Ball Bearings 71908 ACE/HCP4A

Super Precision Angular Contact Ball Bearings 71908 ACE/HCP4A

The 71908 ACE/HCP4A is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, designed for high-speed applications. Its 25° contact angle efficiently handles combined radial and axial loads up to 2106 lbf.

The bearing features ceramic balls and a phenolic cage, reducing friction and allowing speeds up to 52,000 RPM. Its P4 tolerance class ensures exceptional running accuracy for precision machinery.

This open-design bearing comes pre-lubricated and operates in temperatures from -30°C to 110°C. Matched arrangements are available for applications requiring precise axial stiffness.

Ideal for CNC spindles or high-speed tooling where both speed and precision matter. At just 0.088kg, it’s lightweight yet robust for its compact 12mm width. Interchangeable with SKF equivalents for easy replacement.

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Product Parameters

  • Part Number 71908 ACE/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 19
  • 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 2106 lbf
  • Static Radial Load 1282 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 52000 rpm
  • Weight 0.088 kg
  • Price（$） 288.378
Super Precision Angular Contact Ball Bearings 71908 ACE/HCP4A dimension drawing
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Features

Why Choose 71908 ACE/HCP4A Bearing for Precision Tasks?

71908 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 phenolic cage maintains ball alignment, enhancing durability and reducing wear.
With a dynamic radial load capacity of 2106 lbf, it handles demanding tasks reliably.

71908 ACE/HCP4A Bearing operates at speeds up to 52,000 rpm, making it suitable for high-speed machinery.
Its P4 tolerance class ensures exceptional accuracy in performance-critical applications.

The open design allows for easy lubrication, maintaining optimal performance over time.
This bearing is perfect for applications where precision and reliability are paramount.

Application

Common Applications of 71908 ACE/HCP4A Bearing
71908 ACE/HCP4A Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making it ideal for high-speed spindle applications.

In robotics, 71908 ACE/HCP4A Bearing provides smooth motion control for articulated arms and joints. Its phenolic cage offers lightweight durability, essential for repetitive movements in automated systems.

For aerospace components, 71908 ACE/HCP4A Bearing’s P4 tolerance class guarantees reliability in navigation systems and actuators. The matched arrangement option further enhances performance in critical flight controls.

Where Is 71908 ACE/HCP4A Bearing Used?
You’ll often find 71908 ACE/HCP4A Bearing in dental drills, where its high-speed capability and precision are crucial. The open design allows for easy lubrication, extending service life in medical environments.

In 3D printers, 71908 ACE/HCP4A Bearing ensures precise linear motion for print heads. Its chrome steel rings withstand continuous use without compromising accuracy.

Built for Heavy-Duty Use: 71908 ACE/HCP4A Bearing
71908 ACE/HCP4A Bearing handles demanding conditions in industrial pumps, where its dynamic load capacity prevents premature wear. The lubricated design maintains performance even under constant operation.

For electric vehicle motors, 71908 ACE/HCP4A Bearing supports high RPM requirements efficiently. Its temperature range makes it suitable for both cold starts and prolonged running.

Automotive vs Aerospace: Applications of 71908 ACE/HCP4A Bearing
In automotive transmissions, 71908 ACE/HCP4A Bearing manages angular loads smoothly during gear shifts. The metric sizing ensures compatibility with European and Asian car models.

For aircraft landing gear systems, 71908 ACE/HCP4A Bearing’s ceramic balls reduce weight while maintaining strength. This makes it a preferred choice for weight-sensitive aerospace applications.

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