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Super Precision Angular Contact Ball Bearings 71928 ACD/HCPA9ADGA

Super Precision Angular Contact Ball Bearings 71928 ACD/HCPA9ADGA

The 71928 ACD/HCPA9ADGA is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, designed for high-speed applications. Its 25° contact angle and ceramic balls ensure smooth operation under heavy radial loads up to 32850 lbf.

The open design and phenolic cage allow for easy lubrication and reduced friction, while the chrome steel rings provide durability. It can handle speeds up to 11000 RPM and temperatures from -30°C to 110°C.

This bearing comes in a matched set of two, suitable for universal mounting arrangements like back-to-back or face-to-face. Ideal for precision machinery, spindles, or high-performance equipment where accuracy is key.

Weighing 2.77kg, it’s robust yet efficient for its size, meeting PA9A tolerance standards for exceptional performance. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71928 ACD/HCPA9ADGA
  • 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 PA9A
  • System of Measurement Metric
  • Seal Type Open
  • 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 32850 lbf
  • Static Radial Load 49500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 2.77 kg
Super Precision Angular Contact Ball Bearings 71928 ACD/HCPA9ADGA dimension drawing
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Features

Performance Features of 71928 ACD/HCPA9ADGA Bearing

71928 ACD/HCPA9ADGA Bearing is designed with a 25° contact angle, ideal for handling combined radial and axial loads.
Its chrome steel rings and ceramic balls ensure high precision and durability in demanding applications.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a dynamic radial load capacity of 32,850 lbf, it excels in high-load scenarios.

71928 ACD/HCPA9ADGA Bearing operates smoothly at speeds up to 11,000 rpm, balancing speed and reliability.
Its universal matching design allows flexible arrangement options for various operational needs.

The extra light preload (Class A) ensures minimal friction and optimal efficiency.
Its temperature range of -30°C to 110°C makes it suitable for diverse working environments.

Application

Industrial Uses of 71928 ACD/HCPA9ADGA Bearing
This bearing is commonly used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making it suitable for high-speed spindle applications.

What Makes 71928 ACD/HCPA9ADGA Bearing a Preferred Choice?
Its universal matching design allows flexible arrangements like back-to-back or face-to-face, ideal for complex machinery setups. The phenolic cage provides stability, even in demanding industrial environments.

Perfect Fit for Automation: 71928 ACD/HCPA9ADGA Bearing
In robotic arms and CNC machines, this bearing’s extra-light preload ensures smooth, precise movements. The PA9A tolerance class guarantees consistent performance in automated production lines.

Automotive vs Aerospace: Applications of 71928 ACD/HCPA9ADGA Bearing
In automotive systems, it supports gearboxes with its high dynamic load capacity. For aerospace, the ceramic balls and chrome steel rings handle extreme conditions without compromising precision.

Where Is 71928 ACD/HCPA9ADGA Bearing Used?
You’ll find it in medical imaging devices, where its low friction and high-speed capability are crucial. The lubricated design ensures long-term reliability in continuous operation.

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