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Super Precision Angular Contact Ball Bearings S71911 ACB/HCP4ADBA

Super Precision Angular Contact Ball Bearings S71911 ACB/HCP4ADBA

The S71911 ACB/HCP4ADBA is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, designed for high-speed applications. It features a 25° contact angle and comes as a matched pair (DB arrangement) for balanced performance.

Made from chrome steel rings and ceramic balls, it handles radial loads up to 3442 lbf and spins smoothly at speeds up to 46,000 RPM. The phenolic cage ensures quiet operation, while the sealed design keeps grease in and contaminants out.

Its extra-light preload (Class A) minimises friction, making it ideal for precision machinery like spindles or CNC tools. The bearing operates reliably in temperatures from -30°C to 110°C.

Weighing 0.36kg, this P4A-tolerance bearing offers excellent accuracy for demanding industrial applications. It’s interchangeable with SKF models, simplifying replacements.

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Product Parameters

  • Part Number S71911 ACB/HCP4ADBA
  • 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 5.556 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 3442 lbf
  • Static Radial Load 3442 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 46000 rpm
  • Weight 0.36 kg
Super Precision Angular Contact Ball Bearings S71911 ACB/HCP4ADBA dimension drawing
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Features

How Does S71911 ACB/HCP4ADBA Bearing Achieve High-Speed Performance?

S71911 ACB/HCP4ADBA Bearing features ceramic balls and a phenolic cage, reducing friction for smoother high-speed operation.
Its dynamic radial load capacity of 3442 lbf ensures reliable performance in precision applications.

The 25° contact angle design enhances stability, making it suitable for angular contact loads.
With a maximum speed of 46,000 rpm, it excels in demanding high-speed environments.

S71911 ACB/HCP4ADBA Bearing’s sealed design protects against contaminants, extending service life.
The extra light preload (Class A) ensures minimal vibration and noise during operation.

Application

How Does S71911 ACB/HCP4ADBA Bearing Improve Performance?
S71911 ACB/HCP4ADBA Bearing is a go-to choice for high-speed machine tools, where its ceramic balls and phenolic cage reduce friction and heat buildup. The sealed design keeps contaminants out, ensuring long-lasting precision in demanding environments.

In robotics, S71911 ACB/HCP4ADBA Bearing excels in articulated arms, providing smooth motion thanks to its 25° contact angle and extra-light preload. The matched pair setup enhances stability, making it ideal for repetitive, high-accuracy tasks.

For medical imaging devices, S71911 ACB/HCP4ADBA Bearing’s P4A tolerance class ensures minimal vibration, crucial for clear scans. The grease lubrication and wide temperature range allow reliable performance in clinical settings.

Automotive enthusiasts appreciate S71911 ACB/HCP4ADBA Bearing in performance gearboxes, where its angular contact design handles combined loads effortlessly. The metric dimensions make it a straightforward upgrade for European sports cars.

In 3D printers, S71911 ACB/HCP4ADBA Bearing’s low-friction ceramic balls contribute to precise layer alignment. Its compact size fits neatly into tight spaces without compromising on speed or durability.

Q&A

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