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Super Precision Angular Contact Ball Bearings 71908 ACB/HCP4A

Super Precision Angular Contact Ball Bearings 71908 ACB/HCP4A

The 71908 ACB/HCP4A is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from chrome steel for durability. It handles radial loads up to 1141 lbf and spins smoothly at speeds up to 50,000 RPM.

Its 25° contact angle and ceramic balls reduce friction, while the phenolic cage ensures quiet operation. The open design allows easy lubrication, making maintenance straightforward.

This bearing is ideal for high-speed applications like machine tool spindles or precision instruments. With a P4 tolerance class, it offers reliable performance in temperatures from -30°C to 110°C.

Weighing just 0.11kg, it’s lightweight yet robust. It’s interchangeable with SKF bearings, making it a versatile choice for replacements or upgrades.

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Product Parameters

  • Part Number 71908 ACB/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 3.969 mm
  • Ball Qty 28
  • 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 878 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 50000 rpm
  • Weight 0.11 kg
  • Price（$） 288.432
Super Precision Angular Contact Ball Bearings 71908 ACB/HCP4A dimension drawing
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Features

Why Choose 71908 ACB/HCP4A Bearing for Precision Tasks?

71908 ACB/HCP4A Bearing features a 25° contact angle, ideal for handling combined radial and axial loads with precision.
Its ceramic balls and chrome steel rings ensure smooth operation even at high speeds up to 50,000 rpm.

The phenolic cage maintains ball alignment, reducing friction and enhancing durability.
With a P4 tolerance class, it delivers exceptional accuracy for demanding applications.

71908 ACB/HCP4A Bearing is preloaded and matched for consistent performance in precision setups.
Its open design allows for easy lubrication, ensuring long-term reliability.

Application

Ideal for Precision: 71908 ACB/HCP4A Bearing
The 71908 ACB/HCP4A Bearing excels in high-speed machine tools, where its 25° contact angle ensures smooth rotation under angular loads. Its ceramic balls reduce friction, making it ideal for precision grinding applications.

In robotics, 71908 ACB/HCP4A Bearing provides reliable performance in articulated arms, thanks to its phenolic cage and P4 tolerance. The open design allows for easy lubrication, extending service life in continuous operation.

For aerospace components, 71908 ACB/HCP4A Bearing’s matched arrangement ensures consistent alignment in critical systems. Its lightweight construction and high-speed capability make it a preferred choice for avionics and instrumentation.

In medical imaging devices, 71908 ACB/HCP4A Bearing’s low heat generation and precision support accurate diagnostics. The chrome steel rings and ceramic balls offer durability in sterile environments.

Automation systems benefit from 71908 ACB/HCP4A Bearing’s ability to handle combined loads in compact spaces. Its metric sizing and interchangeable design simplify integration with European and Asian equipment.

Q&A

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