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Super Precision Angular Contact Ball Bearings 71911 ACE/HCP4ADT

Super Precision Angular Contact Ball Bearings 71911 ACE/HCP4ADT

The 71911 ACE/HCP4ADT is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from chrome steel for durability. Its 25° contact angle and ceramic balls ensure smooth operation under radial loads up to 5355 lbf.

This matched pair of bearings comes with a preload option, enhancing stability in high-speed applications reaching up to 46,000 RPM. The phenolic cage reduces friction, making it efficient for precision tasks.

Ideal for machine tools or spindle applications where accuracy is key. It operates in temperatures from -30°C to 110°C and meets P4A tolerance standards for reliable performance.

Weighing 0.29kg, this set is lightweight yet robust, suitable for demanding industrial environments. Its open design allows for easy lubrication and maintenance.

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Product Parameters

  • Part Number 71911 ACE/HCP4ADT
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings << DT
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 5355 lbf
  • Static Radial Load 4500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 46000 rpm
  • Weight 0.29 kg
Super Precision Angular Contact Ball Bearings 71911 ACE/HCP4ADT dimension drawing
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Features

Performance Features of 71911 ACE/HCP4ADT Bearing

71911 ACE/HCP4ADT Bearing features a 25° contact angle, optimised for precision angular contact applications.
Its chrome steel rings and ceramic balls reduce friction, enhancing performance at high speeds.

The phenolic cage ensures smooth operation, even under dynamic radial loads up to 5355 lbf.
With a maximum speed of 46,000 rpm, it delivers reliable performance in demanding conditions.

71911 ACE/HCP4ADT Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its matched arrangement of two bearings with preload offers stability for precision tasks.

The P4A tolerance class ensures consistent accuracy, making it suitable for high-precision machinery.
Lubrication is pre-applied, reducing initial setup time and maintenance needs.

Application

Industrial Uses of 71911 ACE/HCP4ADT Bearing
71911 ACE/HCP4ADT Bearing is commonly used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The 25° contact angle ensures stable performance under combined radial and axial loads.

In robotics, 71911 ACE/HCP4ADT Bearing provides precise motion control for articulated arms, thanks to its P4A tolerance class. The matched bearing arrangement (DT) further enhances rigidity in dynamic applications.

For dental drill handpieces, 71911 ACE/HCP4ADT Bearing’s lubricated design allows smooth operation at speeds up to 46,000 rpm. The chrome steel rings offer durability in sterilisation cycles common in medical settings.

What Makes 71911 ACE/HCP4ADT Bearing a Preferred Choice?
71911 ACE/HCP4ADT Bearing works well in 3D printer extruders, where its low heat generation prevents material warping. The open seal design simplifies relubrication during maintenance intervals.

In small wind turbine pitch systems, 71911 ACE/HCP4ADT Bearing handles oscillating loads reliably. The ceramic balls provide electrical insulation, reducing corrosion risks in outdoor installations.

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