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Super Precision Angular Contact Ball Bearings 71920 CD/HCP4A

Super Precision Angular Contact Ball Bearings 71920 CD/HCP4A

The 71920 CD/HCP4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and can handle radial loads up to 13612 lbf, spinning smoothly at speeds up to 16000 RPM.

Its open design and phenolic cage ensure durability, while the ceramic balls reduce friction for quieter operation. The bearing comes preloaded and matched for precise performance in demanding applications.

Ideal for high-speed machinery like spindles or CNC equipment, it operates efficiently in temperatures from -30°C to 110°C. Weighing 0.67kg, it’s a robust yet lightweight choice for precision engineering.

Compatible with SKF bearings, it meets P4 tolerance standards for exceptional accuracy. Perfect for applications where reliability and smooth rotation are key.

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Product Parameters

  • Part Number 71920 CD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • 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 13612 lbf
  • Static Radial Load 14738 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.67 kg
  • Price（$） 122.868
Super Precision Angular Contact Ball Bearings 71920 CD/HCP4A dimension drawing
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Features

Why Choose 71920 CD/HCP4A Bearing for Precision Tasks?

71920 CD/HCP4A Bearing features a 15° contact angle, ideal for handling combined radial and axial loads with high precision.
Its ceramic balls and chrome steel rings reduce friction, ensuring smooth operation even at high speeds.

The phenolic cage in 71920 CD/HCP4A Bearing enhances durability and maintains ball alignment under heavy loads.
With a maximum speed of 16,000 rpm, it delivers reliable performance in demanding applications.

71920 CD/HCP4A Bearing’s P4 tolerance class guarantees exceptional accuracy for precision machinery.
Its open design allows for easy lubrication, extending service life and reducing maintenance needs.

Application

Super Precision Angular Contact Ball Bearings 71920 CD/HCP4A are commonly used in high-speed machine tools, where their 15° contact angle ensures accurate radial and axial load handling. The ceramic balls reduce friction, making them ideal for precision grinding applications.

In automotive systems, 71920 CD/HCP4A supports high-performance gearboxes and electric motors, thanks to its P4 tolerance class. The phenolic cage provides excellent heat resistance, ensuring durability under demanding conditions.

For automation equipment like robotic arms, 71920 CD/HCP4A offers smooth operation due to its matched arrangement and preload options. The open design allows for easy lubrication, extending service life in continuous-use scenarios.

Medical imaging devices benefit from 71920 CD/HCP4A’s low-noise performance and high-speed capabilities. The chrome steel rings and ceramic balls ensure reliable operation in sensitive environments.

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