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Super Precision Angular Contact Ball Bearings 71811 CD/P4QBCA

Super Precision Angular Contact Ball Bearings 71811 CD/P4QBCA

The 71811 CD/P4QBCA is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from durable chrome steel. It manages radial loads up to 6075 lbf and operates smoothly at speeds up to 34,000 RPM.

Its 15° contact angle and phenolic cage ensure stable performance, while the open design allows for easy lubrication. The bearing comes in a matched set of four for balanced load distribution.

Ideal for high-precision applications like machine tool spindles or robotics, it works in temperatures from -30°C to 110°C. Weighing 0.32kg, it’s lightweight yet robust for its size.

This model is interchangeable with SKF bearings, making it a reliable choice for replacements. Compliant with P4 tolerance standards for precise engineering needs.

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Product Parameters

  • Part Number 71811 CD/P4QBCA
  • 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 36 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 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 6075 lbf
  • Static Radial Load 9675 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.32 kg
Super Precision Angular Contact Ball Bearings 71811 CD/P4QBCA dimension drawing
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Features

Performance Features of 71811 CD/P4QBCA Bearing

71811 CD/P4QBCA Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 6075 lbf.

The phenolic cage maintains ball alignment, reducing friction and noise during high-speed operation.
With a maximum speed of 34,000 rpm, it delivers reliable performance in demanding conditions.

71811 CD/P4QBCA Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its extra light preload (Class A) enhances precision, making it suitable for high-accuracy machinery.

The matched arrangement of four bearings ensures consistent performance in angular contact applications.
Lubrication is pre-applied, simplifying initial setup and reducing maintenance requirements.

Application

Industrial Uses of 71811 CD/P4QBCA Bearing
71811 CD/P4QBCA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched set of four bearings provides stability in demanding industrial environments.

Where Is 71811 CD/P4QBCA Bearing Used?
You’ll often find 71811 CD/P4QBCA Bearing in automotive applications like high-performance gearboxes, where its extra light preload reduces friction. The phenolic cage material also helps maintain smooth operation at high speeds.

Built for Heavy-Duty Use: 71811 CD/P4QBCA Bearing
71811 CD/P4QBCA Bearing excels in robotics, particularly in robotic arms requiring precise movement. Its chrome steel construction ensures durability even under continuous angular loads.

Automotive vs Aerospace: Applications of 71811 CD/P4QBCA Bearing
In automotive systems, 71811 CD/P4QBCA Bearing supports gear shifts with its high-speed capability. For aerospace, its P4 tolerance class makes it suitable for navigation equipment needing pinpoint accuracy.

Perfect Fit for Automation: 71811 CD/P4QBCA Bearing
71811 CD/P4QBCA Bearing is ideal for automated production lines, where its consistent performance reduces downtime. The lubricated design also extends its service life in continuous operation.

Q&A

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