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Super Precision Angular Contact Ball Bearings 71948 ACD/HCP4AQBCA

Super Precision Angular Contact Ball Bearings 71948 ACD/HCP4AQBCA

The 71948 ACD/HCP4AQBCA is a super precision angular contact ball bearing with a 240mm bore and 320mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 128700 lbf and operates smoothly at speeds up to 7500 RPM.

Its 25° contact angle and ceramic balls reduce friction, while the phenolic cage ensures durability. The set includes four matched bearings for balanced performance in demanding applications.

Designed for extra light preload, this bearing is ideal for high-precision machinery like CNC spindles or aerospace equipment. It performs reliably in temperatures from -30°C to 110°C.

Weighing 23.9kg, it’s a robust choice for heavy-duty use. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 71948 ACD/HCP4AQBCA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 320 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 152 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 31
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 128700 lbf
  • Static Radial Load 274500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 23.9 kg
Super Precision Angular Contact Ball Bearings 71948 ACD/HCP4AQBCA dimension drawing
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Features

Performance Features of 71948 ACD/HCP4AQBCA Bearing

71948 ACD/HCP4AQBCA 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 ensures smooth operation, even at high speeds up to 7,500 rpm.
With a dynamic radial load capacity of 128,700 lbf, it handles demanding conditions reliably.

71948 ACD/HCP4AQBCA Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its precision P4A tolerance class guarantees consistent performance in super precision applications.

The matched arrangement of four bearings provides balanced load distribution.
This design reduces vibration and extends the bearing’s service life.

Application

Industrial Uses of 71948 ACD/HCP4AQBCA Bearing
71948 ACD/HCP4AQBCA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for high-speed operations.

In aerospace applications, 71948 ACD/HCP4AQBCA Bearing supports critical components like turbine shafts, thanks to its extra-light preload and P4A tolerance class. The phenolic cage adds durability in demanding environments.

For automation systems, 71948 ACD/HCP4AQBCA Bearing excels in robotic arms, providing smooth movement under radial loads. Its matched arrangement of four bearings ensures consistent performance in repetitive tasks.

Medical imaging devices benefit from 71948 ACD/HCP4AQBCA Bearing’s chrome steel rings, which offer reliability in high-precision scanners. The open design allows for easy lubrication, extending service life.

In electric motors, 71948 ACD/HCP4AQBCA Bearing handles high radial loads while maintaining low noise levels. The metric sizing makes it compatible with a wide range of industrial motor designs.

Q&A

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