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Super Precision Angular Contact Ball Bearings S71911 CB/HCP4A

Super Precision Angular Contact Ball Bearings S71911 CB/HCP4A

The S71911 CB/HCP4A is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, designed for high-speed applications. Its compact 13mm width and chrome steel construction make it both durable and space-efficient.

With a 15° contact angle and ceramic balls, it handles radial loads up to 2239 lbf and spins smoothly at speeds up to 28,000 RPM. The sealed design keeps lubrication in and contaminants out for reliable performance.

This bearing comes preloaded and matched for precision alignment, ideal for machine tools or high-speed spindles. Its phenolic cage ensures quiet operation and long service life.

Weighing just 0.18kg, it’s lightweight yet robust, suitable for temperatures from -30°C to 110°C. Compliant with P4 tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number S71911 CB/HCP4A
  • 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 5.556 mm
  • Ball Qty 28
  • 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 2239 lbf
  • Static Radial Load 1834 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 28000 rpm
  • Weight 0.18 kg
  • Price（$） 527.823
Super Precision Angular Contact Ball Bearings S71911 CB/HCP4A dimension drawing
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Features

Performance Features of S71911 CB/HCP4A Bearing

S71911 CB/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 28,000 rpm.
With a dynamic radial load capacity of 2239 lbf, it handles demanding conditions reliably.

S71911 CB/HCP4A Bearing is preloaded and matched for precision, meeting P4 (ABEC-7) tolerance standards.
Its sealed design and lubrication extend service life in varied temperature conditions.

Application

Key Fields for S71911 CB/HCP4A Bearing
S71911 CB/HCP4A Bearing is commonly used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for applications demanding smooth operation.

In robotics, S71911 CB/HCP4A Bearing supports articulated arms, providing stability during repetitive movements. Its phenolic cage offers lightweight durability, which is essential for maintaining precision over time.

For aerospace components, S71911 CB/HCP4A Bearing’s P4 tolerance class guarantees reliability in navigation systems and actuators. The sealed design also protects against contaminants in challenging environments.

Automotive enthusiasts appreciate S71911 CB/HCP4A Bearing in performance gearboxes, where its high-speed capability enhances shifting smoothness. The matched arrangement option further optimises load distribution.

In medical imaging devices, S71911 CB/HCP4A Bearing’s low vibration characteristics ensure clear scans. The lubricated construction minimises maintenance needs, crucial for continuous operation in healthcare settings.

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