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Super Precision Angular Contact Ball Bearings 7040 CD/HCP4A

Super Precision Angular Contact Ball Bearings 7040 CD/HCP4A

The 7040 CD/HCP4A is a super precision angular contact ball bearing with a 200mm bore and 310mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and can handle dynamic radial loads up to 66600 lbf.

With a phenolic cage and ceramic balls, it offers smooth operation at speeds up to 8000 RPM. The open design allows for easy lubrication, and it performs reliably in temperatures from -30°C to 110°C.

This bearing is available with preload and matched arrangements, making it versatile for high-precision applications. Ideal for machine tools or spindle systems where accuracy and durability are key.

Weighing 10.1kg, it’s robust yet designed for precision. Compliant with P4 tolerance class (ABEC-7), it ensures consistent performance in demanding conditions.

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Product Parameters

  • Part Number 7040 CD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 200 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 310 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 51 mm
  • Width Tolerance -0.3mm to 0
  • Ball Dia 34.925 mm
  • Ball Qty 21
  • 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 66600 lbf
  • Static Radial Load 87750 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 8000 rpm
  • Weight 10.1 kg
  • Price（$） 421.344
Super Precision Angular Contact Ball Bearings 7040 CD/HCP4A dimension drawing
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Features

Performance Features of 7040 CD/HCP4A Bearing

7040 CD/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.
With a dynamic radial load capacity of 66,600 lbf, it handles demanding conditions reliably.
Its phenolic cage ensures smooth operation at speeds up to 8,000 rpm.

How Is 7040 CD/HCP4A Bearing Engineered for Reliability?

7040 CD/HCP4A Bearing features a precision P4 tolerance class, ensuring consistent performance in high-speed applications.
The ceramic balls and chrome steel rings work together to resist wear and extend service life.
Its open design allows for easy lubrication, maintaining smooth operation.
The bearing operates efficiently within a temperature range of -30° to 110°C.

Built for Reliability: 7040 CD/HCP4A Bearing

7040 CD/HCP4A Bearing’s matched arrangement and preload options provide stability in precision tasks.
The phenolic cage minimises noise, making it suitable for sensitive equipment.
With a static radial load capacity of 87,750 lbf, it offers robust performance.
Its 200 mm bore size accommodates larger shafts while maintaining precision.

Application

Industrial Uses of 7040 CD/HCP4A Bearing
The 7040 CD/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. Its ceramic balls reduce friction, making it ideal for applications demanding smooth operation.

In aerospace systems, 7040 CD/HCP4A Bearing supports components like turbine shafts, thanks to its high dynamic load capacity. The phenolic cage adds durability, even under extreme temperature variations.

For automation equipment, 7040 CD/HCP4A Bearing’s P4 tolerance class provides the precision needed for robotic arms. The open seal design allows for easy lubrication, extending its service life in continuous operation.

Medical imaging devices benefit from 7040 CD/HCP4A Bearing’s reliable performance, ensuring minimal vibration during scans. Its chrome steel rings offer long-term stability in critical healthcare applications.

In electric motors, 7040 CD/HCP4A Bearing handles high-speed rotations efficiently, thanks to its balanced ceramic ball construction. The matched arrangement option further enhances its versatility for custom setups.

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