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Super Precision Angular Contact Ball Bearings S71920 CB/HCP4A

Super Precision Angular Contact Ball Bearings S71920 CB/HCP4A

The S71920 CB/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 comes sealed for protection, with matched sets available for balanced performance.

This bearing handles radial loads up to 4860 lbf and reaches speeds of 15,000 RPM, thanks to its ceramic balls and phenolic cage. Its P4 tolerance class ensures smooth, precise operation in demanding applications.

Preload options enhance stability, making it suitable for high-precision machinery like spindles or CNC equipment. The sealed design keeps lubrication in place, reducing maintenance needs.

Weighing 0.83kg, it’s robust yet manageable for its size. Compliant with standard temperature ranges (-30°C to 110°C), it’s a reliable choice for industrial and precision engineering uses.

Interchangeable with SKF bearings, it offers flexibility for replacements or upgrades. Ideal for scenarios where accuracy and durability are key, such as aerospace or medical devices.

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Product Parameters

  • Part Number S71920 CB/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 7.938 mm
  • Ball Qty 37
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 4860 lbf
  • Static Radial Load 5040 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.83 kg
  • Price（$） 1443.366
Super Precision Angular Contact Ball Bearings S71920 CB/HCP4A dimension drawing
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Features

Why Choose S71920 CB/HCP4A Bearing for Precision Tasks?

S71920 CB/HCP4A Bearing features a 15° contact angle, ideal for handling combined radial and axial loads with precision.
Its ceramic balls and chrome steel rings reduce friction, ensuring smooth operation even at high speeds.

The phenolic cage maintains ball alignment, enhancing durability and performance in demanding applications.
With a maximum speed of 15,000 rpm, it is suited for high-speed machinery requiring reliable accuracy.

S71920 CB/HCP4A Bearing’s P4 tolerance class guarantees consistent performance in precision engineering tasks.
Pre-lubricated and sealed, it requires minimal maintenance while operating in temperatures from -30° to 110°C.

Application

Super Precision Angular Contact Ball Bearings S71920 CB/HCP4A is commonly used in high-speed machine tools, where its ceramic balls and phenolic cage reduce friction and heat buildup. The sealed design keeps contaminants out, ensuring long-lasting performance in demanding environments.

In automotive applications, S71920 CB/HCP4A supports precision components like turbochargers and transmission systems, where angular contact is essential. Its P4 tolerance class ensures smooth operation even under heavy radial loads.

For medical imaging devices, S71920 CB/HCP4A’s chrome steel rings and ceramic balls provide reliable, low-noise performance. The lubricated design minimises maintenance, making it ideal for critical healthcare equipment.

In robotics, S71920 CB/HCP4A excels in articulated arms and automated systems, thanks to its matched arrangement and preload options. The high-speed capability ensures precise movement in repetitive tasks.

Consumer electronics like high-end printers benefit from S71920 CB/HCP4A’s quiet operation and durability. The compact size fits well in space-constrained designs without compromising performance.

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