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Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADT

Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADT

The 71909 ACD/P4ADT is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and comes in a matched set of two bearings for balanced performance.

This bearing handles radial loads up to 4478 lbf and spins smoothly at speeds up to 41,000 RPM. Its phenolic cage ensures quiet operation and long service life, even under high-speed conditions.

The open design allows for easy lubrication, while the P4A tolerance class guarantees precise alignment. Ideal for applications like machine tool spindles or high-precision equipment where accuracy is key.

Weighing just 0.26kg, it’s a lightweight yet robust solution for demanding environments. Suitable for temperatures ranging from -30°C to 110°C, making it versatile for various industrial uses.

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Product Parameters

  • Part Number 71909 ACD/P4ADT
  • 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 << DT
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Available
  • 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/P4ADT dimension drawing
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Features

Performance Features of 71909 ACD/P4ADT Bearing

71909 ACD/P4ADT Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 4478 lbf.

Its phenolic cage ensures smooth operation at high speeds, reaching up to 41,000 rpm.
The matched arrangement of two bearings provides stability and reduces vibration in precision setups.

71909 ACD/P4ADT Bearing operates efficiently within a temperature range of -30°C to 110°C.
The open design allows for easy lubrication, maintaining performance over extended periods.

With a P4A tolerance class, this bearing delivers consistent precision in demanding conditions.
The 23 balls, each 6.35 mm in diameter, ensure balanced load distribution and reduced wear.

Application

Common Applications of 71909 ACD/P4ADT Bearing
71909 ACD/P4ADT Bearing is widely used in high-speed machine tools, where its precision and angular contact design ensure accurate spindle performance. The matched arrangement of two bearings enhances stability, making it ideal for demanding machining tasks.

In robotics, 71909 ACD/P4ADT Bearing supports articulated arms, providing smooth motion and reliable load handling. Its phenolic cage reduces friction, which is crucial for maintaining efficiency in automated systems.

For aerospace applications, 71909 ACD/P4ADT Bearing’s high-speed capability and P4A tolerance class make it suitable for avionics and control systems. The chrome steel construction ensures durability even in extreme conditions.

Where Is 71909 ACD/P4ADT Bearing Used?
You’ll often find 71909 ACD/P4ADT Bearing in medical imaging devices, where its precision and low vibration are essential for clear diagnostics. The open design allows for easy lubrication, extending service life in critical healthcare equipment.

In automotive testing rigs, 71909 ACD/P4ADT Bearing handles angular loads with ease, ensuring accurate performance measurements. Its high-speed rating makes it a reliable choice for dynamic testing environments.

Built for Heavy-Duty Use: 71909 ACD/P4ADT Bearing
71909 ACD/P4ADT Bearing excels in industrial pumps, where its robust design handles both radial and axial loads. The phenolic cage material resists wear, even in continuous operation scenarios.

For precision measuring instruments, 71909 ACD/P4ADT Bearing’s tight tolerances ensure consistent accuracy. Its lubricated design minimises maintenance, making it a practical choice for laboratory environments.

Automotive vs Aerospace: Applications of 71909 ACD/P4ADT Bearing
In automotive transmissions, 71909 ACD/P4ADT Bearing supports smooth gear shifts with its angular contact design. The high-speed capability ensures reliable performance in both manual and automatic systems.

For aerospace actuators, 71909 ACD/P4ADT Bearing’s precision and durability are critical for reliable operation. The matched bearing set provides the stability needed in flight control mechanisms.

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