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Super Precision Angular Contact Ball Bearings S71911 ACE/P4ADT

Super Precision Angular Contact Ball Bearings S71911 ACE/P4ADT

The S71911 ACE/P4ADT 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, with two bearings in a matched arrangement.

This model handles radial loads up to 5355 lbf and spins smoothly at speeds up to 34,000 RPM. Its phenolic cage ensures quiet operation, while the grease lubrication makes maintenance straightforward.

The P4A tolerance class guarantees high precision, ideal for applications requiring tight control. It works well in temperatures from -30°C to 110°C, making it suitable for various environments.

Weighing just 0.35kg, it’s a lightweight yet robust choice for precision machinery like spindles or high-speed tools. Interchangeable with SKF bearings, it offers a reliable replacement option.

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Product Parameters

  • Part Number S71911 ACE/P4ADT
  • 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 2 bearings << DT
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • 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 0.35 kg
Super Precision Angular Contact Ball Bearings S71911 ACE/P4ADT dimension drawing
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Features

How Is S71911 ACE/P4ADT Bearing Engineered for Reliability?

S71911 ACE/P4ADT Bearing features a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 5355 lbf.

With a phenolic cage, S71911 ACE/P4ADT Bearing ensures smooth operation at high speeds, reaching up to 34,000 rpm.
Its sealed design and grease lubrication reduce maintenance needs while maintaining performance.

The matched arrangement of two bearings provides preload, improving precision and stability.
S71911 ACE/P4ADT Bearing operates reliably in temperatures ranging from -30°C to 110°C.

Application

Super Precision Angular Contact Ball Bearings S71911 ACE/P4ADT are commonly used in high-speed machine tools, where their 25° contact angle ensures accurate radial and axial load handling. The sealed design keeps contaminants out, extending service life in demanding environments.

In automotive applications, S71911 ACE/P4ADT supports precision components like electric motor shafts, offering smooth rotation at speeds up to 34,000 rpm. The matched bearing arrangement (DT) enhances stability for critical systems.

For robotics, S71911 ACE/P4ADT provides reliable performance in articulated arms, where consistent motion control is essential. The phenolic cage material reduces friction, improving efficiency in repetitive movements.

Medical imaging devices benefit from S71911 ACE/P4ADT’s P4A tolerance class, ensuring minimal vibration during high-resolution scans. The grease lubrication maintains quiet operation in sensitive diagnostic equipment.

In aerospace systems, S71911 ACE/P4ADT handles combined loads in actuator mechanisms, withstanding temperature variations from -30°C to 110°C. The chrome steel construction ensures durability in rigorous flight conditions.

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