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Super Precision Angular Contact Ball Bearings S71920 ACB/P4A

Super Precision Angular Contact Ball Bearings S71920 ACB/P4A

The S71920 ACB/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. It handles both radial and angular loads, with a dynamic radial load capacity of 4568 lbf.

Its sealed design keeps lubrication in and contaminants out, ensuring smooth operation at speeds up to 11000 RPM. The phenolic cage offers durability and reduces friction for long-lasting performance.

With a 25° contact angle and P4 tolerance class, this bearing provides excellent precision for demanding applications. Ideal for machine tools, spindles, or high-speed equipment where accuracy is crucial.

Weighing 0.88kg, it’s robust yet manageable for its size. Compliant with standard temperature ranges from -30°C to 110°C, it’s a reliable choice for various industrial uses.

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Product Parameters

  • Part Number S71920 ACB/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 7.938 mm
  • Ball Qty 37
  • 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 4568 lbf
  • Static Radial Load 4770 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 11000 rpm
  • Weight 0.88 kg
  • Price（$） 1443.132
Super Precision Angular Contact Ball Bearings S71920 ACB/P4A dimension drawing
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Features

Why Choose S71920 ACB/P4A Bearing for Precision Tasks?

S71920 ACB/P4A Bearing features a 25° contact angle, ideal for handling combined radial and axial loads with high precision.
Its chrome steel construction ensures durability and resistance to wear in demanding applications.

The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 11,000 rpm, it delivers smooth operation even at high speeds.

S71920 ACB/P4A Bearing is lubricated for long service life, minimising maintenance needs.
Its P4 tolerance class guarantees exceptional accuracy for precision machinery.

Application

Industrial Uses of S71920 ACB/P4A Bearing
S71920 ACB/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment under radial and axial loads. The sealed construction helps maintain lubrication, reducing maintenance needs in demanding industrial environments.

In automotive applications, S71920 ACB/P4A Bearing supports high-speed components like electric motor shafts, thanks to its P4 tolerance class. The phenolic cage provides lightweight durability, making it suitable for performance-oriented systems.

For medical imaging devices, S71920 ACB/P4A Bearing’s chrome steel construction delivers reliable performance in critical applications. Its low friction and high-speed capability make it ideal for precision instruments requiring smooth operation.

Automation systems benefit from S71920 ACB/P4A Bearing’s matched arrangement, which ensures consistent performance in robotic arms. The preload availability further enhances stability, crucial for repetitive motion tasks.

In consumer electronics, S71920 ACB/P4A Bearing is found in high-end printers, where its quiet operation and durability are valued. The metric sizing ensures compatibility with a wide range of compact devices.

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