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Super Precision Angular Contact Ball Bearings 71938 ACD/HCP4A

Super Precision Angular Contact Ball Bearings 71938 ACD/HCP4A

The 71938 ACD/HCP4A is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, designed for high-performance applications. Its 25° contact angle and ceramic balls ensure smooth operation under heavy radial loads up to 36675 lbf.

Made from chrome steel with a phenolic cage, it offers durability and can handle speeds up to 8000 RPM. The open design allows for easy lubrication, and it operates efficiently in temperatures from -30°C to 110°C.

This bearing is interchangeable with SKF models, making it a versatile choice for replacements. Ideal for machine tools or precision equipment where accuracy and reliability are key.

Weighing 3.64kg, it’s robust yet manageable for its size. Compliant with P4 tolerance class, it meets high precision standards for demanding industrial uses.

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Product Parameters

  • Part Number 71938 ACD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 33 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 22.225 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 36675 lbf
  • Static Radial Load 46800 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 8000 rpm
  • Weight 3.64 kg
  • Price（$） 3722.355
Super Precision Angular Contact Ball Bearings 71938 ACD/HCP4A dimension drawing
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Features

Performance Features of 71938 ACD/HCP4A Bearing

71938 ACD/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 and reduce friction during high-speed operations.

The phenolic cage ensures smooth performance, even at speeds up to 8,000 rpm.
With a dynamic radial load capacity of 36,675 lbf, it handles demanding conditions reliably.

71938 ACD/HCP4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its precision P4 tolerance class ensures consistent performance in high-accuracy applications.

The open design allows for easy lubrication, maintaining optimal performance over time.
Weighing 3.64 kg, it balances strength and practicality for industrial use.

Application

Industrial Uses of 71938 ACD/HCP4A Bearing
71938 ACD/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for high-speed operations.

In automotive applications, 71938 ACD/HCP4A Bearing supports performance gearboxes and electric motor systems. Its phenolic cage provides stability under varying temperatures and loads.

For robotics, 71938 ACD/HCP4A Bearing’s matched arrangement allows for precise movement in articulated arms. The P4 tolerance class ensures consistent performance in automated production lines.

Medical imaging devices benefit from 71938 ACD/HCP4A Bearing’s smooth operation and low vibration. The chrome steel rings and ceramic balls offer long-lasting reliability in critical applications.

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