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Super Precision Angular Contact Ball Bearings 71903 ACE/HCP4A

Super Precision Angular Contact Ball Bearings 71903 ACE/HCP4A

The 71903 ACE/HCP4A is a super precision angular contact ball bearing with a 17mm bore and 30mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and ceramic balls for smooth operation.

This bearing handles radial loads up to 718 lbf and reaches speeds of 115,000 RPM, making it suitable for high-performance applications. Its phenolic cage ensures stability and reduces friction.

The open design allows easy lubrication, while the P4 tolerance class guarantees precise movement. Ideal for spindle drives or precision instruments where accuracy is key.

Weighing just 0.014kg, it’s lightweight yet robust. It operates in temperatures from -30°C to 110°C, offering reliable performance in various conditions.

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Product Parameters

  • Part Number 71903 ACE/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 17 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 30 mm
  • Outer Dia Tolerance -0.005mm to 0
  • Width 7 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 3.969 mm
  • Ball Qty 13
  • 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 718 lbf
  • Static Radial Load 328 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 115000 rpm
  • Weight 0.014 kg
  • Price（$） 131.841
Super Precision Angular Contact Ball Bearings 71903 ACE/HCP4A dimension drawing
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Features

Performance Features of 71903 ACE/HCP4A Bearing

71903 ACE/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 115,000 rpm.
With a dynamic radial load capacity of 718 lbf, it delivers reliable performance in precision tasks.

71903 ACE/HCP4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its P4 tolerance class guarantees high precision, making it suitable for demanding applications.

Application

Common Applications of 71903 ACE/HCP4A Bearing
71903 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 suitable for applications demanding smooth operation.

In robotics, 71903 ACE/HCP4A Bearing supports articulated arms, providing stability during precise movements. Its phenolic cage offers lightweight durability, ideal for repetitive tasks.

For medical imaging devices, 71903 ACE/HCP4A Bearing’s P4 tolerance class guarantees consistent performance in sensitive equipment. The chrome steel rings enhance longevity, even in demanding environments.

Automotive applications like electric vehicle motors benefit from 71903 ACE/HCP4A Bearing’s ability to handle both radial and axial loads. Its lubricated design ensures quiet and efficient operation over long periods.

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