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Super Precision Angular Contact Ball Bearings S71911 ACD/P4ADBC

Super Precision Angular Contact Ball Bearings S71911 ACD/P4ADBC

The S71911 ACD/P4ADBC 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 matched in a DB arrangement.

This model handles radial loads up to 6660 lbf and reaches speeds of 34,000 RPM, making it suitable for high-performance applications. The phenolic cage ensures smooth operation, while the moderate preload (Class C) enhances stability.

Its sealed design reduces maintenance needs, and the grease lubrication keeps it running smoothly in temperatures from -30°C to 110°C. The P4A tolerance class guarantees high precision for demanding tasks.

Ideal for machine tools or precision equipment where accuracy and speed are crucial. Weighing 0.37kg, it’s a robust yet manageable choice for industrial use. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S71911 ACD/P4ADBC
  • 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 23
  • 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 Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 6660 lbf
  • Static Radial Load 6188 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.37 kg
Super Precision Angular Contact Ball Bearings S71911 ACD/P4ADBC dimension drawing
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Features

How Does S71911 ACD/P4ADBC Bearing Achieve Super Precision?

S71911 ACD/P4ADBC Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
The matched arrangement of two bearings ensures balanced load distribution and enhanced stability.

With a dynamic radial load capacity of 6660 lbf, S71911 ACD/P4ADBC Bearing handles demanding conditions effortlessly.
Its phenolic cage maintains ball alignment, reducing friction and extending operational life.

S71911 ACD/P4ADBC Bearing operates smoothly at speeds up to 34,000 rpm, thanks to its precision P4A tolerance class.
The chrome steel construction ensures durability and resistance to wear in varied environments.

Designed for moderate preload, S71911 ACD/P4ADBC Bearing offers consistent performance in high-speed applications.
Its sealed design and grease lubrication minimise maintenance needs while ensuring reliable operation.

Application

Industrial Uses of S71911 ACD/P4ADBC Bearing
S71911 ACD/P4ADBC 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 robotics, S71911 ACD/P4ADBC Bearing supports articulated arms, providing smooth movement and load distribution. Its moderate preload and P4A tolerance make it suitable for repetitive, high-accuracy tasks.

For medical imaging devices, S71911 ACD/P4ADBC Bearing’s phenolic cage reduces friction, ensuring quiet operation. The chrome steel rings and balls offer durability in continuous-use scenarios.

Automotive applications like electric vehicle motors benefit from S71911 ACD/P4ADBC Bearing’s grease lubrication and high-speed capability. The matched arrangement simplifies installation in compact spaces.

In aerospace systems, S71911 ACD/P4ADBC Bearing handles both radial and axial loads efficiently. Its temperature range makes it reliable in varying operational conditions.

Q&A

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