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Super Precision Angular Contact Ball Bearings 71820 ACD/P4

Super Precision Angular Contact Ball Bearings 71820 ACD/P4

The 71820 ACD/P4 is a super precision angular contact ball bearing with a 100mm bore and 125mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and is designed for angular contact loads, handling up to 4770 lbf dynamically.

With a maximum speed of 13,000 RPM and a phenolic cage, it offers smooth operation and durability. The open design allows for easy lubrication, ensuring consistent performance.

This bearing is ideal for high-precision applications like machine tool spindles or medical equipment. Its P4 tolerance class ensures tight precision, making it a reliable choice for demanding environments.

Weighing 0.31kg, it balances lightweight design with robust performance. It’s interchangeable with SKF bearings, simplifying replacements. Suitable for temperatures ranging from -30°C to 110°C.

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Product Parameters

  • Part Number 71820 ACD/P4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 34
  • 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 4770 lbf
  • Static Radial Load 6188 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 13000 rpm
  • Weight 0.31 kg
  • Price（$） 1271.367
Super Precision Angular Contact Ball Bearings 71820 ACD/P4 dimension drawing
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Features

Engineered for Precision: 71820 ACD/P4 Bearing

71820 ACD/P4 Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel construction ensures durability and reliable performance under dynamic radial loads up to 4770 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 13,000 rpm, it delivers consistent performance in demanding conditions.

71820 ACD/P4 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its P4 tolerance class guarantees precision, making it suitable for high-accuracy machinery.

Application

Industrial Uses of 71820 ACD/P4 Bearing
71820 ACD/P4 Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The open seal type allows for efficient lubrication, extending service life in demanding conditions.

In automotive applications, 71820 ACD/P4 Bearing supports high-speed components like turbochargers and transmission systems. Its P4 tolerance class ensures minimal vibration, crucial for smooth vehicle performance.

For robotics, 71820 ACD/P4 Bearing provides reliable motion control in articulated arms and precision actuators. The phenolic cage material reduces friction, making it ideal for repetitive, high-accuracy tasks.

Medical imaging devices benefit from 71820 ACD/P4 Bearing’s stable operation under radial loads. The chrome steel construction ensures durability in sterile environments where reliability is essential.

In consumer electronics, 71820 ACD/P4 Bearing can be found in high-end printers and scanners. Its compact size and precision make it suitable for devices requiring quiet, long-lasting performance.

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