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Super Precision Angular Contact Ball Bearings S71911 ACE/HCP4ADGA

Super Precision Angular Contact Ball Bearings S71911 ACE/HCP4ADGA

The S71911 ACE/HCP4ADGA 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 sealed design, ensuring smooth operation under radial loads up to 5355 lbf.

With ceramic balls and a phenolic cage, it spins at high speeds up to 34,000 RPM while maintaining stability. The extra-light preload (Class A) reduces friction, making it ideal for precision applications.

This bearing comes in a matched set of two, suitable for universal mounting configurations like back-to-back or face-to-face. It performs well in temperatures from -30°C to 110°C and is pre-lubricated with grease for easy maintenance.

Weighing just 0.29kg, it’s a lightweight yet robust choice for machine tools or high-speed spindles. Interchangeable with SKF bearings, it meets P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number S71911 ACE/HCP4ADGA
  • 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 7.938 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 5355 lbf
  • Static Radial Load 4500 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.29 kg
Super Precision Angular Contact Ball Bearings S71911 ACE/HCP4ADGA dimension drawing
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Features

Performance Features of S71911 ACE/HCP4ADGA Bearing

S71911 ACE/HCP4ADGA Bearing is crafted with chrome steel rings and ceramic balls, ensuring high precision and durability.
The 25° contact angle allows it to handle combined radial and axial loads efficiently.
With a dynamic radial load capacity of 5355 lbf, it performs reliably in demanding applications.
Its phenolic cage keeps the ceramic balls aligned, reducing friction and wear.

How Is S71911 ACE/HCP4ADGA Bearing Engineered for Reliability?

S71911 ACE/HCP4ADGA Bearing features a sealed design, protecting it from contaminants and extending its service life.
The extra light preload (Class A) ensures smooth operation and minimal vibration.
It can reach speeds up to 34,000 rpm, making it suitable for high-speed applications.
The universal matching arrangement allows for flexible installation in back-to-back, face-to-face, or tandem configurations.

Designed for Durability: S71911 ACE/HCP4ADGA Bearing

S71911 ACE/HCP4ADGA Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its ceramic balls and phenolic cage reduce heat generation, enhancing performance.
The P4A tolerance class ensures exceptional precision and consistency.
With a static radial load capacity of 4500 lbf, it offers reliable support in various conditions.

Steel vs Ceramic Bearings: Strengths of S71911 ACE/HCP4ADGA Bearing

S71911 ACE/HCP4ADGA Bearing combines chrome steel rings with ceramic balls for superior performance.
Ceramic balls reduce friction and wear, while the steel rings provide strength.
This combination ensures long-lasting operation even at high speeds.
The grease lubrication further enhances its efficiency and reduces maintenance needs.

Application

Industrial Uses of S71911 ACE/HCP4ADGA Bearing
S71911 ACE/HCP4ADGA Bearing is commonly used in high-precision machine tools, where its 25° contact angle and ceramic balls ensure smooth operation. The sealed design keeps contaminants out, extending service life in demanding environments.

In robotics, S71911 ACE/HCP4ADGA Bearing provides reliable support for articulated arms, thanks to its universal matching capability. The extra-light preload reduces friction, making it ideal for repetitive, high-speed movements.

For medical imaging devices, S71911 ACE/HCP4ADGA Bearing’s phenolic cage and grease lubrication offer quiet, vibration-free performance. Its P4A tolerance class ensures the precision needed for sensitive diagnostic equipment.

Automotive vs Aerospace: Applications of S71911 ACE/HCP4ADGA Bearing
In automotive applications, S71911 ACE/HCP4ADGA Bearing is often found in high-performance transmissions, where its angular contact design handles combined loads effectively. The ceramic balls reduce heat buildup, enhancing durability.

Aerospace systems benefit from S71911 ACE/HCP4ADGA Bearing’s lightweight construction and high-speed capability. Its sealed design protects against harsh conditions, making it suitable for flight control mechanisms.

What Makes S71911 ACE/HCP4ADGA Bearing a Preferred Choice?
S71911 ACE/HCP4ADGA Bearing stands out in automation equipment due to its universal matching and extra-light preload. These features allow for precise alignment and reduced energy consumption in smart factories.

The bearing’s chrome steel rings and ceramic balls also make it a reliable option for 3D printers, where accuracy and longevity are key. Its temperature range ensures stable performance even during prolonged use.

Q&A

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