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Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBC

Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBC

The 71909 ACD/P4ADBC 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 offers a 25° contact angle for smooth operation.
With a dynamic radial load capacity of 4478 lbf, it handles high speeds up to 41,000 RPM. The phenolic cage ensures durability and reduces friction during use.
This matched set of two bearings (DB arrangement) comes with moderate preload for stable performance. Ideal for precision machinery like spindles or CNC equipment.
Weighing just 0.26kg, it’s lightweight yet robust. Suitable for temperatures from -30°C to 110°C, making it versatile for various industrial applications.

The open design allows for easy lubrication, while the P4A tolerance class ensures exceptional accuracy. Its 23 balls, each 6.35mm in diameter, provide smooth rotation.
Interchangeable with SKF bearings, it’s a reliable choice for replacements or upgrades. Perfect for applications demanding high precision and speed.
The chrome steel construction offers long-lasting performance, even under demanding conditions. A great fit for tools or machines where stability is key.

Its compact size (45mm×68mm×24mm) makes it easy to integrate into existing systems. The moderate preload (Class C) balances performance and longevity.
The matched set design ensures consistent alignment, reducing wear over time. Ideal for high-speed rotations in industrial or technical settings.
With a static radial load of 4050 lbf, it’s built to handle both dynamic and static forces. A dependable choice for engineers and maintenance teams alike.

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Product Parameters

  • Part Number 71909 ACD/P4ADBC
  • 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 Moderate / Class C
  • 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/P4ADBC dimension drawing
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Features

Performance Features of 71909 ACD/P4ADBC Bearing

71909 ACD/P4ADBC 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 noise.

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 tasks.

71909 ACD/P4ADBC Bearing operates smoothly at speeds up to 41,000 rpm, balancing performance and longevity.
Its moderate preload (Class C) enhances stability, reducing vibration during operation.

The open design allows for easy lubrication, maintaining efficiency over time.
Weighing just 0.26 kg, it offers a lightweight yet robust solution for precision machinery.

Application

Industrial Uses of 71909 ACD/P4ADBC Bearing
71909 ACD/P4ADBC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload and P4A tolerance class make it suitable for applications demanding tight control.

In robotics, 71909 ACD/P4ADBC Bearing supports articulated arms, providing smooth movement under combined loads. The phenolic cage reduces friction, enhancing efficiency in repetitive tasks.

For automotive applications, 71909 ACD/P4ADBC Bearing fits well in high-performance gearboxes, handling both radial and axial forces. Its chrome steel construction offers durability under demanding conditions.

Medical imaging devices benefit from 71909 ACD/P4ADBC Bearing’s precision, ensuring stable operation in sensitive equipment. The open design allows for easy lubrication, maintaining performance over time.

Q&A

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