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Super Precision Angular Contact Ball Bearings S71928 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings S71928 CDGA/HCP4A

The S71928 CDGA/HCP4A is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from chrome steel for durability. It handles radial loads up to 21510 lbf and spins smoothly at speeds up to 11000 RPM.

Its sealed design keeps grease in and contaminants out, while the ceramic balls reduce friction for quieter operation. The phenolic cage adds strength and works well in temperatures from -30°C to 110°C.

This bearing is ideal for high-precision applications like machine tools or spindles, where accuracy is key. It comes with an extra light preload (Class A) for minimal resistance.

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

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Product Parameters

  • Part Number S71928 CDGA/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 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement No
  • 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 21510 lbf
  • Static Radial Load 26100 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 CDGA/HCP4A dimension drawing
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Features

Performance Features of S71928 CDGA/HCP4A Bearing

S71928 CDGA/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and ceramic balls enhance durability while reducing friction for smoother operation.

With a dynamic radial load capacity of 21510 lbf, it handles high-performance tasks reliably.
Its extra-light preload ensures precision, making it ideal for applications requiring minimal deflection.

The sealed design and grease lubrication reduce maintenance needs while extending service life.
S71928 CDGA/HCP4A Bearing operates efficiently at speeds up to 11,000 rpm, balancing speed and stability.

Its phenolic cage maintains ball alignment, ensuring consistent performance under varying loads.
The temperature range of -30°C to 110°C allows reliable operation in diverse environments.

Application

Super Precision Angular Contact Ball Bearings S71928 CDGA/HCP4A are commonly used in high-speed machine tools, where their 15° contact angle ensures accurate radial and axial load handling. The ceramic balls and phenolic cage contribute to smooth operation even at elevated speeds.

In aerospace applications, S71928 CDGA/HCP4A Bearings support critical components like turbine shafts, thanks to their P4A tolerance class and grease lubrication. Their sealed design also helps prevent contamination in demanding environments.

For precision robotics, S71928 CDGA/HCP4A Bearings provide reliable performance in articulated arms, where low friction and high rigidity are essential. The extra light preload further enhances responsiveness in dynamic movements.

Medical imaging devices benefit from S71928 CDGA/HCP4A Bearings’ consistent performance, particularly in rotating components of MRI machines. The chrome steel rings ensure durability while maintaining quiet operation.

In electric vehicle motors, S71928 CDGA/HCP4A Bearings handle high-speed rotations efficiently, with their ceramic balls reducing energy loss. The metric sizing makes them compatible with various European and Asian motor designs.

Q&A

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