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Super Precision Angular Contact Ball Bearings 71948 CD/HCP4A

Super Precision Angular Contact Ball Bearings 71948 CD/HCP4A

The 71948 CD/HCP4A is a super precision angular contact ball bearing with a 240mm bore and 320mm outer diameter, designed for high-performance applications. Its 15° contact angle and ceramic balls ensure smooth operation under heavy radial loads up to 51525 lbf.

The phenolic cage and chrome steel rings provide durability, while the open design allows for easy lubrication. It can handle speeds up to 7000 RPM and operates in temperatures from -30°C to 110°C.

This bearing is available with preload and matched arrangements, making it versatile for precise machinery. Ideal for use in CNC spindles or high-speed industrial equipment where accuracy is crucial.

Weighing 5.98kg, it’s robust yet manageable for its size. Compliant with P4 tolerance class (ABEC-7), it ensures reliable performance in demanding conditions.

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Product Parameters

  • Part Number 71948 CD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 320 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 38 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 31
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 51525 lbf
  • Static Radial Load 73125 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 7000 rpm
  • Weight 5.98 kg
  • Price（$） 566.766
Super Precision Angular Contact Ball Bearings 71948 CD/HCP4A dimension drawing
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Features

Performance Features of 71948 CD/HCP4A Bearing

71948 CD/HCP4A Bearing features a 15° contact angle, optimised for precision angular contact applications.
The chrome steel rings and ceramic balls enhance durability while reducing friction.

With a dynamic radial load capacity of 51525 lbf, it handles demanding operations smoothly.
Its phenolic cage ensures stable performance, even at high speeds up to 7,000 rpm.

The P4 tolerance class guarantees exceptional precision for critical tasks.
Lubrication is pre-applied, ensuring ready-to-use convenience and reduced maintenance.

Designed for temperatures from -30° to 110°C, it performs reliably in varied conditions.
The open seal type allows for easy inspection and relubrication when needed.

Application

Super Precision Angular Contact Ball Bearings 71948 CD/HCP4A is commonly used in high-speed machine tools, where its 15° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making it suitable for precision grinding applications.

In aerospace components, 71948 CD/HCP4A provides reliable performance in gearboxes and rotor systems, thanks to its phenolic cage and P4 tolerance class. The matched arrangement option further enhances stability in critical flight operations.

For automation equipment, 71948 CD/HCP4A supports robotic arms and CNC machinery, where its open design allows for easy lubrication. The chrome steel rings ensure durability even under continuous high-speed operation.

Medical imaging devices benefit from 71948 CD/HCP4A’s low-vibration characteristics, essential for maintaining clarity in scans. The ceramic balls also minimise heat generation, prolonging the bearing’s service life.

In electric vehicle drivetrains, 71948 CD/HCP4A handles angular loads efficiently, contributing to smoother power transmission. Its metric sizing ensures compatibility with a wide range of motor designs.

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