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Super Precision Angular Contact Ball Bearings 71909 ACE/P4A

Super Precision Angular Contact Ball Bearings 71909 ACE/P4A

The 71909 ACE/P4A is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, designed for high-speed applications. Its 25° contact angle efficiently handles both radial and axial loads, with dynamic radial load capacity up to 2194 lbf.

Made from durable chrome steel with a phenolic cage, it offers smooth operation at speeds up to 39,000 RPM. The open design allows easy lubrication, while the P4 tolerance class ensures precise performance.

This bearing is ideal for machine tools or spindles where accuracy and speed are crucial. It operates reliably in temperatures from -30°C to 110°C, making it suitable for various industrial environments.

Weighing just 0.13kg, it’s lightweight yet robust. The bearing is interchangeable with SKF models, providing a reliable replacement option.

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Product Parameters

  • Part Number 71909 ACE/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2194 lbf
  • Static Radial Load 1440 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 39000 rpm
  • Weight 0.13 kg
  • Price（$） 324.423
Super Precision Angular Contact Ball Bearings 71909 ACE/P4A dimension drawing
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Features

Performance Features of 71909 ACE/P4A Bearing

71909 ACE/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 2194 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 39,000 rpm.
Precision-engineered to P4 tolerance standards, it delivers reliable performance in demanding conditions.

71909 ACE/P4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open design allows for easy lubrication, maintaining performance over extended periods.

Application

Practical Applications of 71909 ACE/P4A Bearing
71909 ACE/P4A Bearing is widely used in high-speed machine tools, where its 25° contact angle ensures precise spindle rotation. The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

Where Is 71909 ACE/P4A Bearing Used?
In automotive applications, 71909 ACE/P4A Bearing supports components like wheel hubs and transmissions, thanks to its balanced radial and axial load capacity. Its metric sizing ensures compatibility with a variety of vehicle designs.

Built for Heavy-Duty Use: 71909 ACE/P4A Bearing
For robotics and automation, 71909 ACE/P4A Bearing provides reliable performance in robotic arms and CNC machines. The P4 tolerance class ensures consistent accuracy even under demanding conditions.

Medical vs Industrial: Where 71909 ACE/P4A Bearing Excels
In medical imaging devices, 71909 ACE/P4A Bearing offers smooth operation due to its high-speed capabilities and low vibration. Industrial pumps also benefit from its durability and precise load handling.

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