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Super Precision Angular Contact Ball Bearings 71911 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings 71911 CDGA/HCP4A

The 71911 CDGA/HCP4A is a super precision angular contact ball bearing measuring 55mm by 80mm by 13mm, crafted from durable chrome steel with ceramic balls. It handles radial loads up to 4388 lbf and reaches speeds of 34,000 RPM, making it ideal for high-performance applications.

With a 15° contact angle and extra light preload, it offers smooth operation and low friction. The phenolic cage ensures stability, while the open design allows for easy lubrication and maintenance.

This bearing is suitable for temperatures from -30°C to 110°C and comes in a universal matching set for versatile configurations. Perfect for precision machinery like spindles or CNC equipment where accuracy is key.

Weighing just 0.15kg, it’s lightweight yet robust, and interchangeable with SKF bearings for easy replacement. Compliant with P4A tolerance class for exceptional precision.

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Product Parameters

  • Part Number 71911 CDGA/HCP4A
  • 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 13 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 Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 4388 lbf
  • Static Radial Load 3285 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.15 kg
  • Price（$） 152.523
Super Precision Angular Contact Ball Bearings 71911 CDGA/HCP4A dimension drawing
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Features

Performance Features of 71911 CDGA/HCP4A Bearing

71911 CDGA/HCP4A Bearing is crafted with chrome steel rings and ceramic balls, offering high precision and durability.
The 15° contact angle ensures efficient handling of combined radial and axial loads.

With a dynamic radial load capacity of 4388 lbf, it performs reliably in demanding applications.
The phenolic cage maintains ball alignment, reducing friction and enhancing longevity.

71911 CDGA/HCP4A Bearing operates smoothly at speeds up to 34,000 rpm, thanks to its precision engineering.
Its P4A tolerance class guarantees consistent performance in high-precision machinery.

The open design allows for easy lubrication, ensuring optimal performance over time.
Its temperature range of -30°C to 110°C makes it suitable for various operating conditions.

71911 CDGA/HCP4A Bearing is part of a universal matching set, offering flexibility in installation.
Its lightweight design at 0.15 kg reduces overall system weight without compromising strength.

Application

Super Precision Angular Contact Ball Bearings 71911 CDGA/HCP4A are commonly used in high-speed machine tools, where their ceramic balls and phenolic cage reduce friction and heat buildup. The P4A tolerance ensures exceptional accuracy for precision machining operations.
In robotics, 71911 CDGA/HCP4A Bearings provide smooth motion control in articulated arms, thanks to their angular contact design. The extra light preload minimises vibration, enhancing positioning repeatability.
For aerospace applications, 71911 CDGA/HCP4A Bearings handle combined radial and thrust loads in avionics systems. Their universal matching capability allows flexible mounting configurations to suit compact spaces.
Medical imaging devices benefit from 71911 CDGA/HCP4A Bearings’ low noise and consistent performance. The chrome steel rings withstand frequent sterilisation cycles while maintaining dimensional stability.
In semiconductor manufacturing equipment, 71911 CDGA/HCP4A Bearings support wafer handling mechanisms. Their high-speed capability (34,000 rpm) and temperature resistance ensure reliable operation in cleanroom environments.

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