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Super Precision Angular Contact Ball Bearings 71811 ACD/HCP4TBTA

Super Precision Angular Contact Ball Bearings 71811 ACD/HCP4TBTA

The 71811 ACD/HCP4TBTA is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from high-quality chrome steel. Its 25° contact angle and ceramic balls ensure smooth operation under angular loads.

This bearing set includes three matched units in a TBT arrangement, offering extra light preload for minimal friction. It handles dynamic radial loads up to 4680 lbf and spins at impressive speeds up to 34,000 RPM.

The phenolic cage provides durability while keeping weight low at just 0.22kg. Ideal for high-speed applications like machine tool spindles or precision instruments where accuracy is crucial.

With a temperature range of -30°C to 110°C, it performs reliably in various conditions. Compliant with P4 tolerance class, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71811 ACD/HCP4TBTA
  • 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 27 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • 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 4680 lbf
  • Static Radial Load 6862 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.22 kg
Super Precision Angular Contact Ball Bearings 71811 ACD/HCP4TBTA dimension drawing
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Features

Performance Features of 71811 ACD/HCP4TBTA Bearing

71811 ACD/HCP4TBTA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and ceramic balls enhance durability while reducing friction.

With a dynamic radial load capacity of 4680 lbf, it handles demanding conditions reliably.
Its phenolic cage ensures smooth operation at high speeds, up to 34,000 rpm.

The matched arrangement of three bearings provides extra stability in precision tasks.
Its P4 tolerance class guarantees consistent performance in critical applications.

Lubrication is pre-applied, reducing initial setup time and maintenance needs.
The temperature range of -30°C to 110°C ensures versatility in various environments.

Application

Industrial Uses of 71811 ACD/HCP4TBTA Bearing
This bearing is commonly used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The extra light preload ensures smooth rotation, ideal for precision machining.

Where Is 71811 ACD/HCP4TBTA Bearing Used?
You’ll find it in automotive applications like turbochargers, where its angular contact design handles both radial and axial loads efficiently. The P4 tolerance class guarantees consistent performance under demanding conditions.

Built for Heavy-Duty Use: 71811 ACD/HCP4TBTA Bearing
In robotics, this bearing supports articulated arms, offering reliability in repetitive motions. Its chrome steel rings and ceramic balls provide a good balance of strength and low friction.

Automotive vs Aerospace: Applications of 71811 ACD/HCP4TBTA Bearing
In aerospace, it’s used in gyroscopes and flight control systems, thanks to its high-speed capability. For automotive, it’s a fit for electric vehicle motors, where precision and durability matter.

Perfect Fit for Automation: 71811 ACD/HCP4TBTA Bearing
This bearing works well in CNC machines, ensuring accurate positioning and minimal vibration. The matched set of three bearings simplifies installation and improves load distribution.

Q&A

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