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Super Precision Angular Contact Ball Bearings 71918 CD/P4AQBCD

Super Precision Angular Contact Ball Bearings 71918 CD/P4AQBCD

The 71918 CD/P4AQBCD is a super precision angular contact ball bearing with a 90mm bore and 125mm outer diameter, crafted from durable chrome steel. It handles heavy radial loads up to 28125 lbf and spins smoothly at speeds up to 15000 RPM.

Its 15° contact angle and matched set of four bearings provide excellent stability under heavy preload conditions. The open design and phenolic cage ensure reliable performance with easy maintenance.

This bearing is ideal for high-precision applications like machine tool spindles or industrial pumps. It operates efficiently in temperatures from -30°C to 110°C and is interchangeable with SKF models.

Weighing 2.2kg, it’s a robust choice for demanding environments. Compliant with P4A tolerance standards for precision engineering needs.

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Product Parameters

  • Part Number 71918 CD/P4AQBCD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 72 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 11.112 mm
  • Ball Qty 26
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 28125 lbf
  • Static Radial Load 45900 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 2.2 kg
Super Precision Angular Contact Ball Bearings 71918 CD/P4AQBCD dimension drawing
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Features

Performance Features of 71918 CD/P4AQBCD Bearing

71918 CD/P4AQBCD Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 28125 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 15,000 rpm.
This bearing set includes four matched units, providing consistent performance in precision setups.

With a P4A tolerance class, 71918 CD/P4AQBCD Bearing delivers reliable accuracy for demanding tasks.
Its open design allows for easy lubrication, maintaining efficiency over extended periods.

Application

Industrial Uses of 71918 CD/P4AQBCD Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance class make it suitable for demanding industrial environments.

In automotive applications, 71918 CD/P4AQBCD Bearing supports high-performance gearboxes and drivetrains, handling both radial and axial loads efficiently. Its matched arrangement of four bearings provides stability under heavy loads.

For robotics and automation, this bearing’s phenolic cage and chrome steel construction offer durability in high-speed robotic arms. The open design allows for easy lubrication, extending service life in continuous operation.

Medical imaging equipment benefits from 71918 CD/P4AQBCD Bearing’s precision, ensuring smooth movement in CT scanners and MRI machines. The temperature range of -30°C to 110°C makes it reliable in various clinical settings.

In aerospace applications, this bearing’s high dynamic radial load capacity makes it ideal for aircraft landing gear systems. The metric sizing ensures compatibility with international aerospace standards.

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