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Super Precision Angular Contact Ball Bearings S71911 CD/P4AQBCA

Super Precision Angular Contact Ball Bearings S71911 CD/P4AQBCA

The S71911 CD/P4AQBCA is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from durable chrome steel. It features a 15° contact angle and comes sealed for protection, with a matched set of four bearings for balanced performance.

This bearing handles radial loads up to 11408 lbf and spins smoothly at speeds up to 34000 RPM, thanks to its phenolic cage and grease lubrication. Its extra-light preload ensures minimal friction, ideal for high-precision applications.

The sealed design keeps contaminants out, extending its lifespan in harsh conditions. With a temperature range of -30°C to 110°C, it’s suitable for demanding environments.

Perfect for machine tools or spindle systems where accuracy and reliability are key. Weighing 0.73kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards for consistent performance.

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Product Parameters

  • Part Number S71911 CD/P4AQBCA
  • 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 52 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • 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 11408 lbf
  • Static Radial Load 13162 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.73 kg
Super Precision Angular Contact Ball Bearings S71911 CD/P4AQBCA dimension drawing
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Features

How Does S71911 CD/P4AQBCA Bearing Achieve Super Precision?

S71911 CD/P4AQBCA Bearing features a 15° contact angle and P4A tolerance class, ensuring high precision in angular contact applications.
The chrome steel rings and balls provide durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 11408 lbf, it handles demanding tasks with ease.
Its sealed design and grease lubrication allow it to perform reliably at speeds up to 34,000 rpm.

The matched arrangement of four bearings ensures consistent performance in precision setups.
Operating between -30°C to 110°C, it remains stable in various temperature conditions.

S71911 CD/P4AQBCA Bearing’s design minimizes maintenance needs, making it a practical choice for long-term use.
Its lightweight construction at 0.73 kg also helps reduce overall system weight.

Application

Industrial Uses of S71911 CD/P4AQBCA Bearing
S71911 CD/P4AQBCA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction keeps contaminants out, extending service life in demanding workshop conditions.

Where Is S71911 CD/P4AQBCA Bearing Used?
In robotics, S71911 CD/P4AQBCA Bearing provides smooth motion control for articulated arms, thanks to its extra light preload and phenolic cage. The matched set arrangement enhances stability in repetitive tasks.

Built for Heavy-Duty Use: S71911 CD/P4AQBCA Bearing
This bearing handles heavy radial loads in industrial pumps, with chrome steel components offering reliable performance. Its P4A tolerance class ensures consistent operation even at high speeds.

Automotive vs Aerospace: Applications of S71911 CD/P4AQBCA Bearing
In automotive transmissions, S71911 CD/P4AQBCA Bearing supports gear shafts with minimal friction. For aerospace, its precision and temperature tolerance make it suitable for avionics systems.

Perfect Fit for Automation: S71911 CD/P4AQBCA Bearing
S71911 CD/P4AQBCA Bearing excels in automated production lines, where its grease lubrication reduces maintenance needs. The 15° contact angle optimises load distribution for long-term reliability.

Q&A

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