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Super Precision Angular Contact Ball Bearings 71911 CE/HCP4AH1DBA

Super Precision Angular Contact Ball Bearings 71911 CE/HCP4AH1DBA

The 71911 CE/HCP4AH1DBA is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from chrome steel for durability. It features a 15° contact angle and is designed for high-speed operations up to 34,000 RPM.

Its ceramic balls and phenolic cage reduce friction, ensuring smooth performance under dynamic radial loads up to 5648 lbf. The open design allows easy lubrication, maintaining efficiency in temperatures from -30°C to 110°C.

This bearing comes in a matched set of two, arranged back-to-back for extra light preload. Ideal for precision applications like machine tool spindles or high-speed motors.

Weighing just 0.29kg, it offers a balance of strength and lightweight design. Compliant with P4A tolerance class for exceptional accuracy.

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Product Parameters

  • Part Number 71911 CE/HCP4AH1DBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 21
  • Contact Angle 15°
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 5648 lbf
  • Static Radial Load 4770 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.29 kg
Super Precision Angular Contact Ball Bearings 71911 CE/HCP4AH1DBA dimension drawing
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Features

How Is 71911 CE/HCP4AH1DBA Bearing Engineered for Reliability?

71911 CE/HCP4AH1DBA Bearing features a 15° contact angle, optimised for precision angular contact applications.
The chrome steel rings and ceramic balls enhance durability, while the phenolic cage ensures smooth operation.

With a dynamic radial load capacity of 5648 lbf, it handles demanding conditions effortlessly.
Its extra light preload (Class A) and P4A tolerance class guarantee consistent performance.

The matched arrangement of two bearings (DB) provides stability under high-speed operations.
Lubricated for reduced friction, it supports speeds up to 34,000 rpm.

71911 CE/HCP4AH1DBA Bearing operates reliably in temperatures from -30°C to 110°C.
Its lightweight design (0.29 kg) ensures easy integration without compromising strength.

Application

Industrial Uses of 71911 CE/HCP4AH1DBA Bearing
This bearing is commonly used in high-speed machine spindles, where its precision and angular contact design ensure accurate performance. The ceramic balls reduce friction, making it ideal for applications requiring smooth rotation.

Where Is 71911 CE/HCP4AH1DBA Bearing Used?
You’ll find it in CNC machining centres, where its extra light preload enhances tool positioning accuracy. The phenolic cage adds durability, even in demanding industrial environments.

Built for Heavy-Duty Use: 71911 CE/HCP4AH1DBA Bearing
It’s a reliable choice for aerospace applications, such as helicopter gearboxes, thanks to its high dynamic load capacity. The open design allows for easy lubrication, extending service life.

Automotive vs Aerospace: Applications of 71911 CE/HCP4AH1DBA Bearing
In automotive systems, it supports high-performance transmissions, while in aerospace, it handles extreme speeds in turbine engines. The P4A tolerance class ensures consistent quality across both sectors.

Practical Applications of 71911 CE/HCP4AH1DBA Bearing
Medical imaging devices benefit from its low friction and high precision, ensuring clear scans. The chrome steel rings provide long-lasting reliability in critical healthcare equipment.

Q&A

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