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Super Precision Angular Contact Ball Bearings 71920 ACD/P4A

Super Precision Angular Contact Ball Bearings 71920 ACD/P4A

The 71920 ACD/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from robust chrome steel. It supports radial loads up to 12870 lbf and operates smoothly at speeds up to 12000 RPM.

With a 25° contact angle and phenolic cage, it offers excellent stability and durability. The open design allows for easy lubrication, enhancing its performance in demanding conditions.

This bearing is ideal for high-precision applications like machine tool spindles or high-speed motors. Its P4 tolerance class ensures reliable accuracy, making it a top choice for engineers.

Weighing 0.8kg, it balances strength and precision. Compatible with SKF models, it’s a versatile option for replacements or upgrades. Suitable for temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 71920 ACD/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 26
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 12870 lbf
  • Static Radial Load 14175 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 12000 rpm
  • Weight 0.8 kg
  • Price（$） 261.36
Super Precision Angular Contact Ball Bearings 71920 ACD/P4A dimension drawing
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Features

Performance Features of 71920 ACD/P4A Bearing

71920 ACD/P4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
Its chrome steel construction ensures durability and resistance to wear in high-precision applications.

With a dynamic radial load capacity of 12870 lbf, it performs reliably under demanding conditions.
The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.

71920 ACD/P4A Bearing supports speeds up to 12,000 rpm, making it suitable for high-speed machinery.
Its P4 tolerance class guarantees precision, meeting the needs of exacting industrial applications.

The open design allows for easy lubrication, ensuring consistent performance over time.
Operating within a temperature range of -30° to 110°C, it adapts well to various environments.

Application

Key Fields for 71920 ACD/P4A Bearing
71920 ACD/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it suitable for high-speed operations.

In automotive applications, 71920 ACD/P4A Bearing supports components like wheel hubs and transmissions, handling both radial and axial loads efficiently. Its P4 tolerance class ensures consistent performance in demanding conditions.

For robotics, 71920 ACD/P4A Bearing provides smooth motion in articulated arms and joints. The chrome steel construction offers durability, while the open design allows for easy lubrication.

Medical imaging devices benefit from 71920 ACD/P4A Bearing’s precision and low noise characteristics. Its ability to maintain stability under load makes it ideal for sensitive equipment.

In aerospace systems, 71920 ACD/P4A Bearing is valued for its reliability and high-speed capabilities. The lightweight phenolic cage contributes to overall efficiency in flight components.

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