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Super Precision Angular Contact Ball Bearings S71911 CD/P4A

Super Precision Angular Contact Ball Bearings S71911 CD/P4A

The S71911 CD/P4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from high-quality chrome steel. Its compact 13mm width makes it suitable for space-sensitive applications.

This bearing handles radial loads up to 4388 lbf and operates smoothly at speeds up to 16,000 RPM. The 15° contact angle provides excellent angular load capacity, while the sealed design keeps lubrication in and contaminants out.

With a phenolic cage for reduced friction and P4 tolerance class for precision, it ensures reliable performance in demanding conditions. The bearing works within a temperature range of -30°C to 110°C.

Ideal for high-precision machinery like spindles or CNC equipment, it’s also interchangeable with SKF bearings for easy replacement. Weighing just 0.18kg, it offers strength without bulk.

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Product Parameters

  • Part Number S71911 CD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.007mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 13 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4388 lbf
  • Static Radial Load 3285 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.18 kg
  • Price（$） 528.255
Super Precision Angular Contact Ball Bearings S71911 CD/P4A dimension drawing
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Features

Performance Features of S71911 CD/P4A Bearing

S71911 CD/P4A Bearing is designed for super precision applications with a 15° contact angle, ensuring accurate load distribution.
Its chrome steel rings and balls provide high durability, while the phenolic cage reduces friction and noise.

The bearing offers a dynamic radial load capacity of 4388 lbf, making it suitable for demanding tasks.
With a maximum speed of 16,000 rpm, it delivers reliable performance in high-speed operations.

S71911 CD/P4A Bearing is preloaded and available in matched arrangements for enhanced stability.
Its sealed design and lubrication ensure long service life with minimal maintenance.

Application

Common Applications of S71911 CD/P4A Bearing
S71911 CD/P4A Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

In robotics, S71911 CD/P4A Bearing supports articulated arms, providing smooth movement and durability. Its phenolic cage reduces friction, making it ideal for repetitive tasks.

For medical imaging devices, S71911 CD/P4A Bearing’s P4 tolerance class ensures minimal vibration and noise. The chrome steel rings and balls offer long-lasting reliability in critical applications.

Automotive applications include electric vehicle motors, where S71911 CD/P4A Bearing handles both radial and axial loads efficiently. The lubricated design ensures consistent performance at high speeds.

In aerospace systems, S71911 CD/P4A Bearing is chosen for its ability to withstand varying loads and temperatures. The matched arrangement option allows for customised setups in complex machinery.

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