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Super Precision Angular Contact Ball Bearings 71911 ACE/HCP4A

Super Precision Angular Contact Ball Bearings 71911 ACE/HCP4A

The 71911 ACE/HCP4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from chrome steel for durability. It features a 25° contact angle and ceramic balls for smooth operation at high speeds.

This bearing handles dynamic radial loads up to 3330 lbf and can spin at speeds up to 39,000 RPM. Its phenolic cage ensures stability, while the open design allows for easy lubrication.

With a P4 tolerance class, it offers excellent precision for demanding applications. Ideal for high-speed machinery like spindles or dental tools where accuracy is crucial.

Weighing just 0.14kg, it’s lightweight yet robust. It operates efficiently in temperatures from -30°C to 110°C, making it versatile for various industrial uses.

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Product Parameters

  • Part Number 71911 ACE/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.007mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 21
  • 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 3330 lbf
  • Static Radial Load 2250 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 39000 rpm
  • Weight 0.14 kg
  • Price（$） 439.911
Super Precision Angular Contact Ball Bearings 71911 ACE/HCP4A dimension drawing
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Features

Performance Features of 71911 ACE/HCP4A Bearing

71911 ACE/HCP4A Bearing features a 25° contact angle, optimised for angular contact load distribution.
The chrome steel rings and ceramic balls enhance durability while reducing friction.

With a dynamic radial load capacity of 3330 lbf, it handles high-speed applications up to 39,000 rpm.
The phenolic cage ensures smooth operation and minimal wear over time.

Its precision P4 tolerance class guarantees consistent performance in demanding conditions.
The open design allows for easy lubrication, maintaining efficiency.

71911 ACE/HCP4A Bearing operates reliably within a temperature range of -30° to 110°C.
The ceramic balls contribute to its lightweight design, weighing just 0.14 kg.

Application

Common Applications of 71911 ACE/HCP4A Bearing
71911 ACE/HCP4A Bearing is widely used in high-speed machine tools, where its angular contact design ensures precise spindle rotation. The ceramic balls reduce friction, making it suitable for applications demanding smooth operation.

In robotics, 71911 ACE/HCP4A Bearing supports articulated arms, providing stability during repetitive movements. Its phenolic cage offers lightweight durability, ideal for automated systems.

For medical imaging devices, 71911 ACE/HCP4A Bearing’s P4 tolerance class guarantees accuracy in sensitive equipment. The open seal design allows for easy lubrication, extending service life in critical environments.

Automotive enthusiasts appreciate 71911 ACE/HCP4A Bearing in performance gearboxes, where its high-speed capability enhances shifting precision. The chrome steel rings withstand rigorous conditions without compromising reliability.

In aerospace applications, 71911 ACE/HCP4A Bearing handles both radial and axial loads in navigation systems. Its temperature range ensures consistent performance from -30° to 110°C, even in demanding climates.

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