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Super Precision Angular Contact Ball Bearings S71911 ACB/P4A

Super Precision Angular Contact Ball Bearings S71911 ACB/P4A

The S71911 ACB/P4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. Its compact 13mm width makes it suitable for space-sensitive applications.

With a 25° contact angle, it handles both radial and axial loads efficiently, supporting up to 2106 lbf dynamically. It reaches speeds of 20,000 RPM, thanks to its phenolic cage and lubricated design.

The sealed construction keeps contaminants out, extending its lifespan. It operates smoothly in temperatures from -30°C to 110°C.

Ideal for high-precision machinery like spindles or CNC tools, this bearing meets P4 tolerance standards for exceptional accuracy. Its lightweight 0.19kg design ensures easy handling without compromising strength.

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Product Parameters

  • Part Number S71911 ACB/P4A
  • 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 5.556 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2106 lbf
  • Static Radial Load 1721 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 20000 rpm
  • Weight 0.19 kg
  • Price（$） 528.255
Super Precision Angular Contact Ball Bearings S71911 ACB/P4A dimension drawing
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Features

Performance Features of S71911 ACB/P4A Bearing

S71911 ACB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, while the phenolic cage ensures smooth operation at high speeds.

With a dynamic radial load capacity of 2106 lbf, S71911 ACB/P4A Bearing handles demanding conditions reliably.
Its P4 tolerance class (ABEC-7) guarantees precision, making it suitable for high-accuracy machinery.

S71911 ACB/P4A Bearing operates efficiently at speeds up to 20,000 rpm, thanks to its balanced design.
The sealed construction protects against contaminants, extending service life in harsh environments.

Preloaded and matched arrangements are available for S71911 ACB/P4A Bearing, ensuring consistent performance.
Its compact size (55 mm×80 mm×13 mm) makes it ideal for space-constrained applications.

S71911 ACB/P4A Bearing’s temperature range (-30° to 110 °C) allows for versatile use in various climates.
The lubricated design reduces friction, maintaining smooth operation over time.

Application

Super Precision Angular Contact Ball Bearings S71911 ACB/P4A is commonly used in high-speed machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The sealed design keeps contaminants out, extending its lifespan in demanding industrial environments.

In automotive applications, S71911 ACB/P4A supports components like electric motors and gearboxes, thanks to its phenolic cage that reduces friction. Its P4 tolerance class makes it suitable for precision-driven systems in modern vehicles.

For automation and robotics, S71911 ACB/P4A excels in robotic arms and CNC machines, where smooth motion and low vibration are essential. The lubricated design ensures consistent performance even during prolonged operation.

In medical imaging devices, S71911 ACB/P4A’s chrome steel construction provides reliable performance under precise rotational demands. Its high-speed capability makes it ideal for equipment requiring both accuracy and durability.

For consumer electronics like high-end printers, S71911 ACB/P4A offers quiet operation and minimal maintenance. The matched arrangement option allows for custom setups tailored to specific performance needs.

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