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Super Precision Angular Contact Ball Bearings 71805 ACD/P4DBB

Super Precision Angular Contact Ball Bearings 71805 ACD/P4DBB

The 71805 ACD/P4DBB is a super precision angular contact ball bearing with a 25mm bore and 37mm outer diameter, crafted from durable chrome steel. It’s designed for angular contact loads and comes in a matched pair for balanced performance.

With a 25° contact angle and light preload, it handles radial loads up to 1432 lbf and spins smoothly at speeds up to 85,000 RPM. The open design allows for easy lubrication, while the phenolic cage ensures quiet operation.

This bearing is ideal for high-precision applications like machine tool spindles or medical equipment, where accuracy and reliability are key. Its P4 tolerance class guarantees tight precision for demanding tasks.

Weighing just 0.042kg, it’s lightweight yet robust, and operates efficiently in temperatures from -30°C to 110°C. Interchangeable with SKF bearings, it’s a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 71805 ACD/P4DBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 25 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 37 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 14 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 3.175 mm
  • Ball Qty 20
  • 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 Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 1433 lbf
  • Static Radial Load 1372 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 85000 rpm
  • Weight 0.042 kg
Super Precision Angular Contact Ball Bearings 71805 ACD/P4DBB dimension drawing
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Features

How Does 71805 ACD/P4DBB Bearing Achieve Super Precision?

71805 ACD/P4DBB Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel construction ensures durability and consistent performance under dynamic radial loads up to 1433 lbf.

The matched arrangement of two bearings provides stability, while the phenolic cage reduces friction and noise.
With a maximum speed of 85,000 rpm, it delivers smooth operation in demanding conditions.

Light preload (Class B) enhances accuracy, making it suitable for precision machinery.
The open design allows for easy lubrication, maintaining performance across a temperature range of -30°C to 110°C.

Application

Where Is 71805 ACD/P4DBB Bearing Used?
71805 ACD/P4DBB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment and smooth operation. The matched arrangement of two bearings provides stability under radial and axial loads.

In robotics, 71805 ACD/P4DBB Bearing supports articulated arms and joints, thanks to its light preload and phenolic cage reducing friction. Its high-speed capability makes it ideal for dynamic movements.

For medical imaging devices, 71805 ACD/P4DBB Bearing offers reliable performance with minimal vibration. The chrome steel construction ensures durability in sensitive environments where precision is critical.

Automotive applications like electric motor shafts benefit from 71805 ACD/P4DBB Bearing’s balanced load handling. The metric sizing and P4 tolerance class make it a versatile choice for European and Asian vehicle designs.

Q&A

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