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Super Precision Angular Contact Ball Bearings 71818 ACD/P4DBA

Super Precision Angular Contact Ball Bearings 71818 ACD/P4DBA

The 71818 ACD/P4DBA is a super precision angular contact ball bearing with a 90mm bore and 115mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched pair (DB arrangement) for balanced performance.

This bearing handles radial loads up to 7470 lbf and spins smoothly at speeds up to 15000 RPM. Its extra-light preload (Class A) ensures minimal friction and precise operation.

The open design allows easy lubrication, while the phenolic cage offers durability and quiet running. Ideal for temperatures between -30°C and 110°C.

Perfect for high-precision applications like machine tool spindles or high-speed robotics. Weighing 0.56kg, it’s robust yet manageable for its size. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71818 ACD/P4DBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 115 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 31
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 7470 lbf
  • Static Radial Load 11250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.56 kg
Super Precision Angular Contact Ball Bearings 71818 ACD/P4DBA dimension drawing
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Features

Performance Features of 71818 ACD/P4DBA Bearing

71818 ACD/P4DBA Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.

The chrome steel rings and balls enhance durability, while the phenolic cage ensures smooth operation at high speeds.

With a dynamic radial load capacity of 7470 lbf, it handles demanding conditions reliably.

Its extra-light preload and P4 tolerance class make it ideal for high-precision machinery.

Application

Industrial Uses of 71818 ACD/P4DBA Bearing
71818 ACD/P4DBA Bearing is commonly 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 heavy cutting operations.

In automotive applications, 71818 ACD/P4DBA Bearing supports high-speed components like turbochargers and transmission systems. Its extra light preload helps reduce friction, improving fuel efficiency and performance.

For robotics, 71818 ACD/P4DBA Bearing’s phenolic cage and chrome steel construction make it ideal for robotic arms requiring smooth, precise movements. The P4 tolerance class ensures consistent performance in automated systems.

Medical imaging devices benefit from 71818 ACD/P4DBA Bearing’s low noise and high-speed capabilities. Its reliable operation is crucial for maintaining accuracy in diagnostic equipment like MRI scanners.

In aerospace, 71818 ACD/P4DBA Bearing is used in flight control systems due to its ability to handle both radial and axial loads. The wide temperature range makes it suitable for various environmental conditions.

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