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Super Precision Angular Contact Ball Bearings 71908 ACD/P4ADBB

Super Precision Angular Contact Ball Bearings 71908 ACD/P4ADBB

The 71908 ACD/P4ADBB is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 4275 lbf and operates smoothly at speeds up to 56,000 RPM.

With a 25° contact angle and light preload, it offers excellent stability for angular loads. The open design and phenolic cage ensure durability and easy maintenance.

This bearing comes in a matched set of two, arranged back-to-back for balanced performance. Ideal for high-precision applications like machine tool spindles or industrial pumps.

Weighing 0.22kg, it’s lightweight yet robust, suitable for temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71908 ACD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4275 lbf
  • Static Radial Load 3600 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 56000 rpm
  • Weight 0.22 kg
Super Precision Angular Contact Ball Bearings 71908 ACD/P4ADBB dimension drawing
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Features

Performance Features of 71908 ACD/P4ADBB Bearing

71908 ACD/P4ADBB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability and resistance to wear under dynamic radial loads up to 4275 lbf.

The phenolic cage maintains ball alignment, reducing friction and noise during high-speed operation.
With a maximum speed of 56,000 rpm, it delivers reliable performance in precision tasks.

71908 ACD/P4ADBB Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its matched arrangement of two bearings ensures stability and consistent performance.

The light preload design enhances precision while minimising unnecessary friction.
This makes 71908 ACD/P4ADBB Bearing suitable for applications requiring high accuracy and smooth operation.

Application

Industrial Uses of 71908 ACD/P4ADBB Bearing
71908 ACD/P4ADBB 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 stability in demanding industrial environments.

In automotive applications, 71908 ACD/P4ADBB Bearing supports high-speed components like turbochargers and transmission systems. Its light preload and phenolic cage contribute to smooth performance under angular loads.

For robotics, 71908 ACD/P4ADBB Bearing offers reliable motion control in articulated arms and precision gears. The P4A tolerance class makes it suitable for applications requiring minimal vibration and high rotational accuracy.

Medical imaging devices benefit from 71908 ACD/P4ADBB Bearing’s consistent performance and low noise operation. The chrome steel construction ensures durability in critical healthcare equipment.

In automation systems, 71908 ACD/P4ADBB Bearing is a trusted choice for linear actuators and CNC machinery. Its open design allows for easy lubrication, extending service life in continuous operation.

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