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Super Precision Angular Contact Ball Bearings S71920 ACE/HCP4A

Super Precision Angular Contact Ball Bearings S71920 ACE/HCP4A

The S71920 ACE/HCP4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, designed for high-speed applications. Its 25° contact angle and ceramic balls ensure smooth operation under radial loads up to 8348 lbf.

Sealed for protection, this bearing comes pre-lubricated and can handle speeds up to 13,700 RPM. The phenolic cage and chrome steel rings provide durability, while the P4 tolerance class guarantees precision.

Ideal for machine tools or high-performance spindles, it operates in temperatures from -30°C to 110°C. The matched arrangement option allows for custom setups in demanding applications.

Weighing 0.66kg, it’s a robust yet lightweight choice for precision engineering. Compatible with SKF bearings, it offers a reliable alternative for replacements.

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Product Parameters

  • Part Number S71920 ACE/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 24
  • Contact Angle 25°
  • 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 8348 lbf
  • Static Radial Load 6750 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 13700 rpm
  • Weight 0.66 kg
  • Price（$） 1443.51
Super Precision Angular Contact Ball Bearings S71920 ACE/HCP4A dimension drawing
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Features

Performance Features of S71920 ACE/HCP4A Bearing

S71920 ACE/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage maintains ball alignment, ensuring smooth operation even at high speeds.
With a maximum speed of 13,700 rpm, it delivers reliable performance in precision tasks.

S71920 ACE/HCP4A Bearing’s sealed design protects against contaminants, extending its service life.
Its dynamic radial load capacity of 8348 lbf makes it suitable for demanding industrial use.

The P4 tolerance class ensures high precision, meeting strict ABEC-7 standards.
Preload availability allows for customised performance adjustments based on application needs.

Application

Common Applications of S71920 ACE/HCP4A Bearing
S71920 ACE/HCP4A Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it suitable for high-speed operations.

In robotics, S71920 ACE/HCP4A Bearing provides smooth motion control for articulated arms and joints. Its phenolic cage offers lightweight durability, ideal for repetitive movements.

For aerospace applications, S71920 ACE/HCP4A Bearing handles radial and axial loads in avionics systems. The sealed design protects against contaminants, ensuring reliability in harsh environments.

Medical imaging devices benefit from S71920 ACE/HCP4A Bearing’s precision and low noise. The P4 tolerance class guarantees consistent performance in sensitive equipment.

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