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Super Precision Angular Contact Ball Bearings 71804 ACD/HCP4

Super Precision Angular Contact Ball Bearings 71804 ACD/HCP4

The 71804 ACD/HCP4 is a super precision angular contact ball bearing measuring 20mm by 32mm by 7mm, crafted from chrome steel with ceramic balls for enhanced performance. It handles radial loads up to 819 lbf and operates smoothly at speeds up to 75,000 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and low friction. The open design allows for easy lubrication, ensuring long service life.

This bearing is ideal for high-speed applications like machine tool spindles or precision instruments. Its P4 tolerance class ensures reliable accuracy in demanding conditions.

Weighing just 0.017kg, it’s lightweight yet durable. Compatible with SKF bearings, it’s a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 71804 ACD/HCP4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.005mm to 0
  • Outer Dia 32 mm
  • Outer Dia Tolerance -0.006mm to 0
  • Width 7 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 3.175 mm
  • Ball Qty 17
  • 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 819 lbf
  • Static Radial Load 562 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 75000 rpm
  • Weight 0.017 kg
  • Price（$） 22.482
Super Precision Angular Contact Ball Bearings 71804 ACD/HCP4 dimension drawing
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Features

Performance Features of 71804 ACD/HCP4 Bearing

71804 ACD/HCP4 Bearing features a 25° contact angle, optimised for precise angular contact applications.
Its chrome steel rings and ceramic balls reduce friction, enhancing performance at high speeds.

With a dynamic radial load capacity of 819 lbf, it handles demanding tasks reliably.
The phenolic cage ensures smooth operation, even at speeds up to 75,000 rpm.

Designed for temperatures from -30° to 110°C, it performs well in varied conditions.
Its P4 tolerance class guarantees high precision, making it suitable for critical applications.

Application

How Does 71804 ACD/HCP4 Bearing Improve Performance?
71804 ACD/HCP4 Bearing is widely used in high-speed machine tools, where its ceramic balls and P4 precision ensure minimal friction and smooth operation. The 25° contact angle makes it ideal for handling combined radial and axial loads in demanding setups.

In robotics, 71804 ACD/HCP4 Bearing excels in articulated arms, providing the accuracy needed for repetitive movements. Its phenolic cage offers lightweight durability, reducing wear over time.

For medical imaging devices, 71804 ACD/HCP4 Bearing’s chrome steel rings and ceramic balls deliver reliable performance with low heat generation. The open design allows for easy lubrication, extending service life in critical applications.

Automotive applications like electric motor shafts benefit from 71804 ACD/HCP4 Bearing’s high-speed capability and precise load handling. Its metric sizing ensures compatibility with a range of European and Asian designs.

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