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Super Precision Angular Contact Ball Bearings 71905 CD/PA9ADBB

Super Precision Angular Contact Ball Bearings 71905 CD/PA9ADBB

The 71905 CD/PA9ADBB is a super precision angular contact ball bearing with a 25mm bore and 42mm outer diameter, crafted from durable chrome steel. It features a 15° contact angle and comes in a matched set of two bearings for balanced performance.

Designed for light preload, it handles radial loads up to 2498 lbf and spins smoothly at speeds up to 100,500 RPM. The open design allows easy lubrication, while the phenolic cage ensures quiet operation.

Its precision tolerance (PA9A) makes it ideal for high-accuracy applications like machine tool spindles or dental equipment. The matched set ensures consistent performance under angular loads.

Weighing just 0.084kg, it’s lightweight yet robust. Suitable for temperatures from -30°C to 110°C, it’s a reliable choice for demanding environments. Interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 71905 CD/PA9ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 25 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 42 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 18 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 18
  • Contact Angle 15°
  • Tolerance Class PA9A
  • 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 2498 lbf
  • Static Radial Load 1800 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 100500 rpm
  • Weight 0.084 kg
Super Precision Angular Contact Ball Bearings 71905 CD/PA9ADBB dimension drawing
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Features

Performance Features of 71905 CD/PA9ADBB Bearing

71905 CD/PA9ADBB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 2498 lbf.

Its phenolic cage ensures smooth operation at high speeds, reaching up to 100,500 rpm.
The matched arrangement of two bearings provides stability and precision in demanding conditions.

With a light preload (Class B), 71905 CD/PA9ADBB Bearing minimises vibration and noise.
The open seal design allows for easy lubrication, maintaining performance over time.

The tight tolerances (PA9A) ensure reliable operation in precision instruments.
Its compact size (25 mm×42 mm×18 mm) makes it suitable for space-constrained applications.

Application

Common Applications of 71905 CD/PA9ADBB Bearing
71905 CD/PA9ADBB Bearing is widely used in machine tools, where its precision and light preload ensure smooth operation during high-speed machining. The matched arrangement of two bearings provides stability, making it ideal for spindle applications.

In robotics, 71905 CD/PA9ADBB Bearing supports articulated arms, offering reliable angular contact performance. Its phenolic cage reduces friction, enhancing efficiency in automated systems.

For medical imaging devices, 71905 CD/PA9ADBB Bearing’s chrome steel construction ensures durability and consistent performance. The open design allows for easy lubrication, maintaining precision in critical medical environments.

Automotive enthusiasts appreciate 71905 CD/PA9ADBB Bearing in performance gearboxes, where its high-speed capability and angular contact design improve shifting smoothness. The metric sizing ensures compatibility with a range of vehicle models.

In 3D printers, 71905 CD/PA9ADBB Bearing’s precision and low friction contribute to accurate print head movement. The light preload and matched arrangement help maintain alignment during prolonged use.

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