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Super Precision Angular Contact Ball Bearings 71811 CDGA/P4

Super Precision Angular Contact Ball Bearings 71811 CDGA/P4

The 71811 CDGA/P4 is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and is designed for angular contact loads, handling up to 2272 lbf dynamically.

With a maximum speed of 34,000 RPM, it spins smoothly and efficiently. The open design and phenolic cage ensure durability and easy maintenance, even in demanding conditions.

This bearing is part of a universal matching set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision applications like machine tools or spindle drives.

Weighing just 0.081kg, it’s lightweight yet robust, operating reliably between -30°C and 110°C. Compliant with P4 tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71811 CDGA/P4
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 15°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2272 lbf
  • Static Radial Load 2430 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.081 kg
  • Price（$） 83.79
Super Precision Angular Contact Ball Bearings 71811 CDGA/P4 dimension drawing
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Features

Performance Features of 71811 CDGA/P4 Bearing

71811 CDGA/P4 Bearing is crafted with chrome steel rings and balls, offering excellent resistance to wear.
Its dynamic radial load capacity of 2272 lbf ensures reliable performance in precision applications.

The phenolic cage maintains ball alignment, reducing friction and enhancing longevity.
With a maximum speed of 34,000 rpm, it delivers smooth operation for high-speed tasks.

71811 CDGA/P4 Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its open design allows for easy lubrication, ensuring consistent performance over time.

Application

Practical Applications of 71811 CDGA/P4 Bearing
71811 CDGA/P4 Bearing is commonly used in high-speed machine tool spindles, where its precision and angular contact design ensure accurate rotation. The phenolic cage reduces friction, making it suitable for demanding industrial environments.

In automotive applications, 71811 CDGA/P4 Bearing supports components like turbochargers and electric motors, thanks to its ability to handle both radial and axial loads. Its P4 tolerance class ensures consistent performance in critical systems.

For robotics, 71811 CDGA/P4 Bearing provides smooth motion in articulated arms and joints, where low vibration is essential. The chrome steel construction offers durability, even in continuous operation.

Where Is 71811 CDGA/P4 Bearing Used?
You’ll often find 71811 CDGA/P4 Bearing in medical imaging devices, where its high-speed capabilities and precision are crucial. The open design allows for easy lubrication, extending its service life.

In automation systems, 71811 CDGA/P4 Bearing is ideal for linear guides and positioning stages. Its extra-light preload ensures minimal friction, enhancing overall efficiency.

Built for Heavy-Duty Use: 71811 CDGA/P4 Bearing
71811 CDGA/P4 Bearing excels in aerospace applications, such as helicopter rotor systems, where reliability is non-negotiable. The matched bearing sets provide added stability for complex assemblies.

For consumer electronics, 71811 CDGA/P4 Bearing is used in high-performance fans and small motors. Its compact size and lightweight design make it a versatile choice.

Automotive vs Aerospace: Applications of 71811 CDGA/P4 Bearing
In automotive gearboxes, 71811 CDGA/P4 Bearing handles high rotational speeds with ease. Its dynamic load capacity ensures longevity, even under constant stress.

Aerospace systems benefit from 71811 CDGA/P4 Bearing’s ability to perform in extreme temperatures. The P4 tolerance class guarantees precision, which is vital for flight safety.

Q&A

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