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Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBB

Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBB

The 71909 ACD/P4ADBB is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from high-quality chrome steel. It’s designed for angular loads and comes in a matched pair for balanced performance.

With a 25° contact angle and light preload, it handles radial loads up to 4478 lbf and spins smoothly at speeds up to 41,000 RPM. The open design allows easy lubrication, while the phenolic cage ensures quiet operation.

This bearing is ideal for high-precision applications like machine tool spindles or robotics, where accuracy and speed are key. Its P4A tolerance class guarantees tight precision for demanding tasks.

Weighing just 0.26kg, it’s lightweight yet robust, and operates reliably 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 71909 ACD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 23
  • 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 4478 lbf
  • Static Radial Load 4050 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.26 kg
Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBB dimension drawing
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Features

Performance Features of 71909 ACD/P4ADBB Bearing

71909 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, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 4478 lbf, it handles demanding conditions reliably.
The P4A tolerance class guarantees high precision, making it suitable for critical applications.

71909 ACD/P4ADBB Bearing operates smoothly at speeds up to 41,000 rpm.
Its matched arrangement of two bearings (DB) provides stability and balanced performance.

The light preload (Class B) ensures minimal friction and extended service life.
Its temperature range of -30°C to 110°C allows for versatile use in various environments.

Application

Industrial Uses of 71909 ACD/P4ADBB Bearing
71909 ACD/P4ADBB Bearing is commonly used in high-speed machine tools, where its precision and light preload ensure smooth operation. The angular contact design handles both radial and axial loads efficiently.

In automotive applications, 71909 ACD/P4ADBB Bearing supports components like wheel hubs and transmissions, offering durability under demanding conditions. Its metric sizing makes it a versatile fit for various vehicle models.

For robotics, 71909 ACD/P4ADBB Bearing’s phenolic cage and chrome steel construction provide reliable performance in mechanical arms. The matched arrangement enhances stability in dynamic movements.

Medical imaging devices benefit from 71909 ACD/P4ADBB Bearing’s low friction and high-speed capabilities. The open design allows for easy lubrication, ensuring long service life in critical equipment.

In automation systems, 71909 ACD/P4ADBB Bearing is ideal for precision linear guides and spindle drives. Its P4A tolerance class guarantees consistent accuracy in repetitive tasks.

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