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Super Precision Angular Contact Ball Bearings 71809 ACD/HCP4

Super Precision Angular Contact Ball Bearings 71809 ACD/HCP4

The 71809 ACD/HCP4 is a super precision angular contact ball bearing with a 45mm bore and 58mm outer diameter, designed for high-speed applications. Its 25° contact angle efficiently handles combined radial and thrust loads up to 1040 lbf.

Made from chrome steel rings and ceramic balls, it offers smooth operation at speeds up to 38,000 RPM. The phenolic cage ensures durability while keeping weight low at just 0.037kg.

With P4 precision class (ABEC-7), this open bearing is ideal for machine tools or spindle applications where accuracy matters. It performs reliably in temperatures from -30°C to 110°C.

Preload options are available for custom setups, and it’s interchangeable with SKF bearings for easy replacement. The lubricated design reduces maintenance needs.

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Product Parameters

  • Part Number 71809 ACD/HCP4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 58 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 7 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 3.175 mm
  • Ball Qty 31
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 1040 lbf
  • Static Radial Load 1125 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 38000 rpm
  • Weight 0.037 kg
  • Price（$） 383.256
Super Precision Angular Contact Ball Bearings 71809 ACD/HCP4 dimension drawing
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Features

Why Choose 71809 ACD/HCP4 Bearing for Precision Tasks?

71809 ACD/HCP4 Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
The ceramic balls and chrome steel rings ensure smooth operation with minimal friction.

With a dynamic radial load capacity of 1040 lbf, it handles demanding tasks reliably.
Its P4 tolerance class guarantees exceptional accuracy for precision machinery.

The phenolic cage maintains ball alignment, enhancing durability and performance.
Operating at speeds up to 38,000 rpm, it balances speed and stability effortlessly.

Designed for temperatures from -30° to 110°C, it performs consistently in varied conditions.
The open seal type allows for easy lubrication, ensuring long service life.

Application

Practical Applications of 71809 ACD/HCP4 Bearing
71809 ACD/HCP4 Bearing is commonly used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The P4 tolerance ensures precise rotation, making it ideal for CNC machining centres.

In automotive applications, 71809 ACD/HCP4 Bearing supports components like turbochargers and electric motor shafts, handling both radial and axial loads efficiently. Its compact design fits well in space-constrained engine compartments.

For medical imaging devices, 71809 ACD/HCP4 Bearing’s smooth operation and low noise are crucial for accurate diagnostics. The chrome steel rings provide long-lasting performance in demanding hospital environments.

Where Is 71809 ACD/HCP4 Bearing Used?
You’ll often find 71809 ACD/HCP4 Bearing in robotics, particularly in articulated arms requiring precise movement. Its angular contact design handles combined loads while maintaining accuracy.

In aerospace systems, 71809 ACD/HCP4 Bearing’s lightweight construction and high-speed capability make it suitable for gyroscopes and flight control mechanisms. The ceramic balls also resist wear in continuous operation.

Built for Heavy-Duty Use: 71809 ACD/HCP4 Bearing
71809 ACD/HCP4 Bearing excels in industrial pumps, where its lubricated design ensures reliable performance under constant pressure. The phenolic cage withstands harsh chemicals often found in processing plants.

For 3D printers, 71809 ACD/HCP4 Bearing’s precision helps maintain accurate layer alignment during printing. Its low friction characteristics contribute to smoother motion and better print quality.

Automotive vs Aerospace: Applications of 71809 ACD/HCP4 Bearing
In cars, 71809 ACD/HCP4 Bearing typically supports transmission systems, where its preload option reduces vibration. For aircraft, the same bearing handles extreme speeds in auxiliary power units.

In laboratory centrifuges, 71809 ACD/HCP4 Bearing’s balance and speed tolerance ensure safe operation at high RPMs. The temperature range also allows use in various climate-controlled environments.

Q&A

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