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Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBC

Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBC

The 71820 ACD/P4DBC is a super precision angular contact ball bearing with a 100mm bore and 125mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 7762 lbf and operates smoothly at speeds up to 15,000 RPM.

Its 25° contact angle and matched pair arrangement (DB) provide excellent stability under angular loads. The phenolic cage ensures quiet operation and long service life.

This bearing comes preloaded for moderate stiffness, ideal for high-precision applications. It performs well in temperatures from -30°C to 110°C.

Perfect for machine tool spindles or precision gearboxes where accuracy is key. Weighing 0.62kg, it offers a robust solution for demanding industrial environments.

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Product Parameters

  • Part Number 71820 ACD/P4DBC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 34
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 7762 lbf
  • Static Radial Load 12375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.62 kg
Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBC dimension drawing
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Features

Performance Features of 71820 ACD/P4DBC Bearing

71820 ACD/P4DBC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 7762 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 15,000 rpm.
Precision P4 tolerance class guarantees consistent performance in demanding conditions.

Moderate preload (Class C) reduces vibration, improving stability in matched arrangements.
With a temperature range of -30°C to 110°C, it adapts to various operational environments.

The open design simplifies lubrication, extending maintenance intervals.
Its 34-ball configuration balances load capacity and rotational efficiency.

Application

Common Applications of 71820 ACD/P4DBC Bearing
71820 ACD/P4DBC Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides excellent stability for demanding operations.

In robotics, 71820 ACD/P4DBC Bearing supports articulated arms, offering smooth movement and reliable performance. Its moderate preload helps maintain precision even during repetitive tasks.

For medical imaging devices, 71820 ACD/P4DBC Bearing’s phenolic cage reduces friction, making it ideal for sensitive equipment. The chrome steel construction ensures long-lasting performance in critical applications.

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