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Super Precision Angular Contact Ball Bearings S71911 ACD/P4AQBCC

Super Precision Angular Contact Ball Bearings S71911 ACD/P4AQBCC

The S71911 ACD/P4AQBCC is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and comes sealed for protection.

This bearing handles radial loads up to 10980 lbf and reaches speeds of 34000 RPM, thanks to its phenolic cage and grease lubrication. Its moderate preload (Class C) ensures smooth operation under angular contact loads.

The matched set of four bearings (QBC arrangement) offers stability in high-precision applications. Ideal for machine tools or spindle systems where accuracy and speed are crucial.

Weighing 0.73kg, it operates in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S71911 ACD/P4AQBCC
  • 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 52 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 10980 lbf
  • Static Radial Load 12375 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.73 kg
Super Precision Angular Contact Ball Bearings S71911 ACD/P4AQBCC dimension drawing
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Features

Performance Features of S71911 ACD/P4AQBCC Bearing

S71911 ACD/P4AQBCC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability and resistance to wear under high dynamic radial loads of 10980 lbf.

The sealed design and phenolic cage provide reliable operation, even at high speeds up to 34,000 rpm.
Moderate preload (Class C) enhances stability, making it suitable for precision tasks.

With a temperature range of -30°C to 110°C, S71911 ACD/P4AQBCC Bearing performs well in varied conditions.
Its matched arrangement of four bearings ensures consistent performance in demanding setups.

Application

Key Fields for S71911 ACD/P4AQBCC Bearing
S71911 ACD/P4AQBCC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

In automotive applications, S71911 ACD/P4AQBCC Bearing supports components like wheel hubs and transmissions, thanks to its moderate preload and durable chrome steel construction. Its metric sizing makes it a versatile choice for various vehicle models.

For medical imaging devices, S71911 ACD/P4AQBCC Bearing’s phenolic cage and grease lubrication provide smooth, quiet operation. The P4A tolerance class ensures reliability in critical diagnostic equipment.

In robotics, S71911 ACD/P4AQBCC Bearing’s matched arrangement of four bearings enhances stability in robotic arms and automated systems. The high-speed capability makes it suitable for precision movements.

Household appliances like high-end fans benefit from S71911 ACD/P4AQBCC Bearing’s sealed design and low maintenance requirements. The temperature range ensures consistent performance in everyday use.

Q&A

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