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Super Precision Angular Contact Ball Bearings S71920 ACE/P4A

Super Precision Angular Contact Ball Bearings S71920 ACE/P4A

The S71920 ACE/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. Its compact 20mm width makes it suitable for space-conscious applications.

This bearing handles radial loads up to 8348 lbf and reaches speeds of 11,500 RPM, thanks to its phenolic cage and 25° contact angle. The sealed design keeps lubrication in place for smooth operation.

With P4 tolerance class (ABEC-7), it offers excellent precision for demanding tasks. The matched arrangement option ensures consistent performance in paired setups.

Ideal for high-speed machinery like spindles or CNC equipment, it operates reliably between -30°C and 110°C. At 0.78kg, it balances lightweight design with robust construction.

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Product Parameters

  • Part Number S71920 ACE/P4A
  • 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 Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 8348 lbf
  • Static Radial Load 6750 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 11500 rpm
  • Weight 0.78 kg
  • Price（$） 1443.15
Super Precision Angular Contact Ball Bearings S71920 ACE/P4A dimension drawing
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Features

Why Choose S71920 ACE/P4A Bearing for Precision Tasks?

S71920 ACE/P4A Bearing features a 25° contact angle, ideal for handling combined radial and axial loads with high precision.
Its chrome steel construction ensures durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 8348 lbf, it performs reliably in demanding applications.
The P4 tolerance class guarantees exceptional accuracy, making it suitable for high-speed operations up to 11,500 rpm.

Sealed design and preload availability enhance performance stability in varied conditions.
This bearing is lubricated for long service life, reducing maintenance needs.

Application

Industrial Uses of S71920 ACE/P4A Bearing
S71920 ACE/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

What Makes S71920 ACE/P4A Bearing a Preferred Choice?
In robotics, S71920 ACE/P4A Bearing provides smooth movement for articulated arms, thanks to its phenolic cage reducing friction. Its P4 tolerance class makes it ideal for applications demanding minimal vibration.

Built for Heavy-Duty Use: S71920 ACE/P4A Bearing
This bearing handles radial and axial loads efficiently in gearboxes, supporting long service life even under continuous operation. The chrome steel construction offers durability in demanding industrial settings.

Medical vs Industrial: Where S71920 ACE/P4A Bearing Excels
While S71920 ACE/P4A Bearing suits industrial machinery like pumps, its precision also benefits medical imaging devices requiring quiet operation. The lubricated design ensures consistent performance in both fields.

Automotive vs Aerospace: Applications of S71920 ACE/P4A Bearing
In automotive systems, S71920 ACE/P4A Bearing aids in steering mechanisms, while its high-speed capability makes it useful in aircraft auxiliary units. The matched arrangement option adds versatility for custom setups.

Q&A

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