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Super Precision Angular Contact Ball Bearings S71928 ACD/P4ADGA

Super Precision Angular Contact Ball Bearings S71928 ACD/P4ADGA

The S71928 ACD/P4ADGA is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 32850 lbf and operates smoothly at speeds up to 11000 RPM.

Its sealed design keeps grease in place, while the phenolic cage ensures quiet, long-lasting performance. The bearing works well in temperatures from -30°C to 110°C and comes preloaded for extra light applications.

This model is part of a matched set, suitable for universal mounting in back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision machinery like spindles or CNC equipment where accuracy is key.

Weighing 3.37kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number S71928 ACD/P4ADGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 48 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 15.875 mm
  • Ball Qty 29
  • 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 Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 32850 lbf
  • Static Radial Load 49500 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 3.37 kg
Super Precision Angular Contact Ball Bearings S71928 ACD/P4ADGA dimension drawing
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Features

Performance Features of S71928 ACD/P4ADGA Bearing

S71928 ACD/P4ADGA Bearing is crafted with chrome steel rings and balls, offering high precision and durability.
Its 25° contact angle ensures optimal load distribution, enhancing performance in angular contact applications.

The sealed design and grease lubrication reduce maintenance needs while protecting against contaminants.
With a maximum speed of 11,000 rpm, it delivers reliable operation in high-speed environments.

Universal matching allows flexible arrangements like back-to-back or face-to-face, adapting to various setups.
The phenolic cage maintains ball alignment, ensuring smooth rotation and extended service life.

Dynamic radial load capacity of 32,850 lbf makes it suitable for demanding industrial applications.
Operating between -30°C to 110°C, it performs consistently across a wide temperature range.

Application

Industrial Uses of S71928 ACD/P4ADGA Bearing
S71928 ACD/P4ADGA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment under radial and axial loads. The sealed construction helps keep contaminants out, extending service life in demanding environments.

In aerospace applications, S71928 ACD/P4ADGA Bearing supports critical components like turbine shafts, thanks to its extra-light preload and universal matching capability. The phenolic cage reduces friction, making it ideal for high-speed rotations.

For robotics, S71928 ACD/P4ADGA Bearing provides smooth motion in articulated arms, where its P4A tolerance class guarantees consistent performance. The grease lubrication ensures quiet operation, perfect for sensitive automated systems.

Medical imaging devices benefit from S71928 ACD/P4ADGA Bearing’s precision, as its chrome steel construction maintains stability in high-resolution scanners. The matched arrangement simplifies installation, reducing downtime in healthcare settings.

In electric vehicle drivetrains, S71928 ACD/P4ADGA Bearing handles combined loads efficiently, contributing to longer component life. Its temperature range suits both cold starts and sustained high-speed operation.

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