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Super Precision Angular Contact Ball Bearings 71911 CD/HCPA9ADBB

Super Precision Angular Contact Ball Bearings 71911 CD/HCPA9ADBB

The 71911 CD/HCPA9ADBB is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from durable chrome steel and ceramic balls. It handles radial loads up to 7020 lbf and spins smoothly at speeds up to 34,000 RPM.

Its 15° contact angle and matched pair design (DB arrangement) provide excellent stability for angular loads. The phenolic cage ensures quiet operation and long service life, even in demanding conditions.

Preloaded for light performance (Class B), this bearing is ideal for high-speed applications like machine tool spindles or precision instruments. It operates reliably in temperatures from -30°C to 110°C.

Weighing 0.3kg per bearing, the set offers a balanced combination of strength and precision. Compliant with PA9A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71911 CD/HCPA9ADBB
  • 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 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 23
  • Contact Angle 15°
  • Tolerance Class PA9A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 7020 lbf
  • Static Radial Load 6525 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.3 kg
Super Precision Angular Contact Ball Bearings 71911 CD/HCPA9ADBB dimension drawing
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Features

How Is 71911 CD/HCPA9ADBB Bearing Engineered for Reliability?

71911 CD/HCPA9ADBB Bearing features a 15° contact angle, optimised for precision angular contact applications.
The chrome steel rings and ceramic balls enhance durability while reducing friction for smoother operation.

With a dynamic radial load capacity of 7020 lbf, it handles demanding conditions reliably.
The phenolic cage ensures stable ball alignment, even at high speeds up to 34,000 rpm.

Its matched arrangement of two bearings provides balanced performance in DB configuration.
The light preload (Class B) ensures consistent operation without excessive wear.

Designed for temperatures from -30°C to 110°C, it performs well in varied environments.
The open seal type allows for easy lubrication, maintaining optimal performance over time.

Application

Key Fields for 71911 CD/HCPA9ADBB Bearing
71911 CD/HCPA9ADBB Bearing is commonly used in high-speed machine tools, where its angular contact design ensures precise spindle rotation. The ceramic balls reduce friction, making it suitable for applications demanding smooth operation.

In aerospace components, 71911 CD/HCPA9ADBB Bearing supports systems like gyroscopes and actuators, thanks to its light preload and matched arrangement. The phenolic cage adds durability in variable temperature conditions.

For robotics, 71911 CD/HCPA9ADBB Bearing excels in articulated arms, providing stability under angular loads. Its PA9A tolerance class guarantees consistent performance in automated processes.

Medical imaging devices benefit from 71911 CD/HCPA9ADBB Bearing’s low-vibration operation, crucial for clear scans. The open seal design allows for easy lubrication maintenance in sterile environments.

In electric vehicle motors, 71911 CD/HCPA9ADBB Bearing handles high RPMs efficiently, contributing to energy-saving performance. The chrome steel rings ensure long service life even under continuous use.

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