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Super Precision Angular Contact Ball Bearings 71904 CEGA/HCP4A

Super Precision Angular Contact Ball Bearings 71904 CEGA/HCP4A

The 71904 CEGA/HCP4A is a super precision angular contact ball bearing with a 20mm bore and 37mm outer diameter, crafted from chrome steel and ceramic balls. It handles radial loads up to 1112 lbf and reaches speeds of 100,000 RPM, making it suitable for high-performance applications.

Its phenolic cage and extra light preload ensure smooth operation with minimal friction. The open design allows for easy lubrication, while the P4A tolerance class guarantees exceptional accuracy.

This bearing is versatile, working in temperatures from -30°C to 110°C and compatible with universal matching arrangements like back-to-back or face-to-face. Ideal for precision machinery, spindles, or high-speed tools where reliability is key.

Weighing just 0.032kg, it’s lightweight yet durable. Interchangeable with SKF bearings, it’s a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 71904 CEGA/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 37 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 14
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • 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 1112 lbf
  • Static Radial Load 531 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 100000 rpm
  • Weight 0.032 kg
  • Price（$） 93.69
Super Precision Angular Contact Ball Bearings 71904 CEGA/HCP4A dimension drawing
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Features

How Does 71904 CEGA/HCP4A Bearing Achieve Super Precision?

71904 CEGA/HCP4A Bearing features a 15° contact angle, optimised for high-precision angular contact applications.
Its ceramic balls and chrome steel rings reduce friction, ensuring smooth operation at speeds up to 100,000 rpm.
The phenolic cage maintains ball alignment, enhancing durability and performance.
With a P4A tolerance class, it delivers exceptional accuracy for demanding tasks.

Application

Common Applications of 71904 CEGA/HCP4A Bearing
71904 CEGA/HCP4A Bearing is widely used in high-speed machine tools, where its precision and low friction are essential for smooth operation. The ceramic balls and phenolic cage help reduce heat buildup, making it ideal for prolonged use.

In robotics, 71904 CEGA/HCP4A Bearing ensures accurate movement in joints and arms, thanks to its angular contact design. The extra-light preload further enhances responsiveness in automated systems.

For medical imaging devices, 71904 CEGA/HCP4A Bearing provides reliable performance with minimal vibration. Its P4A tolerance class ensures consistent accuracy in sensitive diagnostic equipment.

Where Is 71904 CEGA/HCP4A Bearing Used?
You’ll often find 71904 CEGA/HCP4A Bearing in aerospace applications, where its lightweight and high-speed capabilities are crucial. The chrome steel rings offer durability under demanding conditions.

In precision instruments like optical scanners, 71904 CEGA/HCP4A Bearing delivers stable rotation. The open seal design allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 71904 CEGA/HCP4A Bearing
71904 CEGA/HCP4A Bearing handles heavy loads in industrial pumps, maintaining performance even under stress. Its ceramic balls resist wear, making it a cost-effective choice.

In electric motors, 71904 CEGA/HCP4A Bearing supports high-speed rotation with minimal noise. The metric sizing ensures compatibility with a variety of motor designs.

Automotive vs Aerospace: Applications of 71904 CEGA/HCP4A Bearing
In automotive systems, 71904 CEGA/HCP4A Bearing is used in turbochargers for its heat resistance. The angular contact design manages both radial and axial loads efficiently.

For aerospace, 71904 CEGA/HCP4A Bearing’s lightweight construction is ideal for flight control systems. The high-speed capability ensures reliability in critical applications.

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