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Super Precision Angular Contact Ball Bearings S71928 ACDGA/HCP4A

Super Precision Angular Contact Ball Bearings S71928 ACDGA/HCP4A

The S71928 ACDGA/HCP4A is a super precision angular contact ball bearing, measuring 140mm by 190mm by 24mm, crafted from durable chrome steel with ceramic balls for enhanced performance. It handles radial loads up to 20340 lbf and operates smoothly at speeds up to 11000 RPM.

Its sealed design keeps grease in and contaminants out, while the phenolic cage ensures quiet, long-lasting operation. The bearing works in temperatures from -30°C to 110°C, making it versatile for various environments.

With a 25° contact angle and extra-light preload, it offers precise motion control. Ideal for high-speed applications like machine tool spindles or precision instruments.

Weighing 1.4kg, it’s robust yet manageable. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement. Suitable for back-to-back, face-to-face, or tandem arrangements.

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Product Parameters

  • Part Number S71928 ACDGA/HCP4A
  • 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 24 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 No
  • Number Of Bearings In Matched Set 3
  • 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 20340 lbf
  • Static Radial Load 24750 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 1.4 kg
Super Precision Angular Contact Ball Bearings S71928 ACDGA/HCP4A dimension drawing
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Features

Performance Features of S71928 ACDGA/HCP4A Bearing

S71928 ACDGA/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage maintains ball alignment, ensuring smooth operation even at high speeds.
With a maximum speed of 11,000 rpm, it balances precision and performance.

S71928 ACDGA/HCP4A Bearing operates in temperatures from -30°C to 110°C, suitable for varied environments.
Its sealed design and grease lubrication reduce maintenance needs, extending service life.

The bearing’s dynamic radial load capacity of 20,340 lbf ensures reliability under heavy loads.
Its P4A tolerance class guarantees high precision for demanding applications.

Application

Super Precision Angular Contact Ball Bearings S71928 ACDGA/HCP4A are commonly used in high-speed machine tools, where their ceramic balls and phenolic cage reduce friction and heat buildup. The sealed design keeps contaminants out, ensuring long-lasting performance in demanding industrial settings.

In aerospace applications, S71928 ACDGA/HCP4A provides reliable angular contact support for components like turbine shafts and landing gear systems. Its P4A tolerance class ensures the precision needed for critical flight operations.

For robotics, S71928 ACDGA/HCP4A’s extra-light preload and grease lubrication make it ideal for articulated arms requiring smooth, precise movement. The chrome steel rings add durability, even in continuous operation.

Medical imaging devices benefit from S71928 ACDGA/HCP4A’s low vibration and high-speed capabilities, essential for accurate diagnostics. The ceramic balls also minimise electrical interference in sensitive equipment.

In electric vehicle motors, S71928 ACDGA/HCP4A handles radial and axial loads efficiently, contributing to quieter and more energy-efficient performance. Its metric sizing fits seamlessly into European and Asian automotive designs.

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