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Super Precision Angular Contact Ball Bearings S71911 ACDGA/HCP4A

Super Precision Angular Contact Ball Bearings S71911 ACDGA/HCP4A

The S71911 ACDGA/HCP4A 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 4095 lbf.

The sealed design keeps grease in and contaminants out, while the phenolic cage enhances performance at high speeds up to 34,000 RPM. It operates reliably in temperatures from -30°C to 110°C.

This bearing is part of a universal matching set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tool spindles or aerospace components.

Weighing just 0.16kg, it meets P4A tolerance standards for exceptional accuracy. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S71911 ACDGA/HCP4A
  • 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 13 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 No
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 4095 lbf
  • Static Radial Load 3082 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.16 kg
Super Precision Angular Contact Ball Bearings S71911 ACDGA/HCP4A dimension drawing
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Features

Performance Features of S71911 ACDGA/HCP4A Bearing

S71911 ACDGA/HCP4A Bearing is crafted with chrome steel rings and ceramic balls, ensuring high precision and durability.

The 25° contact angle enhances load distribution, making it ideal for angular contact applications.

With a dynamic radial load capacity of 4095 lbf, it handles demanding tasks efficiently.

The phenolic cage maintains ball alignment, reducing friction and extending service life.

Its sealed design and grease lubrication minimise maintenance needs while operating at speeds up to 34,000 rpm.

The P4A tolerance class guarantees exceptional accuracy for precision machinery.

Application

Industrial Uses of S71911 ACDGA/HCP4A Bearing
S71911 ACDGA/HCP4A Bearing is commonly used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The P4A tolerance ensures precision in demanding industrial applications like CNC machining.

What Makes S71911 ACDGA/HCP4A Bearing a Preferred Choice?
In robotics, S71911 ACDGA/HCP4A Bearing excels in articulated arms due to its angular contact design and extra-light preload. The sealed construction keeps contaminants out, extending service life in dusty environments.

Optimized for Performance: S71911 ACDGA/HCP4A Bearing
For medical imaging devices, S71911 ACDGA/HCP4A Bearing provides smooth rotation thanks to its ceramic balls and chrome steel rings. The grease lubrication works well within the -30°C to 110°C operating range.

Automotive vs Aerospace: Applications of S71911 ACDGA/HCP4A Bearing
In automotive turbochargers, S71911 ACDGA/HCP4A Bearing handles high RPMs reliably, while in aerospace, its lightweight design benefits instrumentation systems. The universal matching feature allows flexible mounting configurations.

Where Is S71911 ACDGA/HCP4A Bearing Used?
You’ll find S71911 ACDGA/HCP4A Bearing in precision lab equipment like centrifuges, where its 34,000 RPM capability and vibration damping are valuable. The metric sizing fits most European-designed machinery seamlessly.

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